/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:24:34,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:24:34,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:24:34,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:24:34,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:24:34,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:24:34,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:24:34,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:24:34,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:24:34,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:24:34,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:24:34,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:24:34,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:24:34,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:24:34,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:24:34,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:24:34,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:24:34,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:24:34,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:24:34,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:24:34,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:24:34,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:24:34,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:24:34,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:24:34,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:24:34,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:24:34,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:24:34,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:24:34,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:24:34,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:24:34,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:24:34,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:24:34,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:24:34,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:24:34,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:24:34,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:24:34,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:24:34,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:24:34,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:24:34,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:24:34,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:24:34,833 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 [2020-08-18 10:24:34,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:24:34,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:24:34,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:24:34,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:24:34,879 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:24:34,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:24:34,879 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:24:34,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:24:34,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:24:34,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:24:34,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:24:34,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:24:34,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:24:34,882 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:24:34,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:24:34,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:24:34,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:24:34,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:24:34,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:24:34,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:24:34,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:24:34,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:24:34,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:24:34,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:24:34,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:24:34,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:24:34,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:24:34,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:24:34,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:24:34,885 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 10:24:35,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:24:35,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:24:35,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:24:35,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:24:35,240 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:24:35,241 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-18 10:24:35,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c962ef91/490a23e69fbe4b6e885e482484b233f3/FLAG4ab155c95 [2020-08-18 10:24:35,845 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:24:35,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-18 10:24:35,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c962ef91/490a23e69fbe4b6e885e482484b233f3/FLAG4ab155c95 [2020-08-18 10:24:36,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c962ef91/490a23e69fbe4b6e885e482484b233f3 [2020-08-18 10:24:36,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:24:36,132 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:24:36,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:24:36,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:24:36,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:24:36,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:24:36" (1/1) ... [2020-08-18 10:24:36,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:36, skipping insertion in model container [2020-08-18 10:24:36,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:24:36" (1/1) ... [2020-08-18 10:24:36,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:24:36,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:24:36,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:24:36,566 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:24:36,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:24:36,792 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:24:36,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:36 WrapperNode [2020-08-18 10:24:36,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:24:36,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:24:36,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:24:36,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:24:36,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:36" (1/1) ... [2020-08-18 10:24:36,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:36" (1/1) ... [2020-08-18 10:24:36,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:36" (1/1) ... [2020-08-18 10:24:36,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:36" (1/1) ... [2020-08-18 10:24:36,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:36" (1/1) ... [2020-08-18 10:24:36,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:36" (1/1) ... [2020-08-18 10:24:36,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:36" (1/1) ... [2020-08-18 10:24:36,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:24:36,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:24:36,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:24:36,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:24:36,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:36" (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 [2020-08-18 10:24:36,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:24:36,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:24:36,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:24:36,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:24:36,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:24:36,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:24:36,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:24:36,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:24:36,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:24:36,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:24:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:24:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:24:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:24:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:24:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:24:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:24:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:24:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:24:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 10:24:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:24:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:24:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:24:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:24:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:24:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:24:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 10:24:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:24:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:24:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:24:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:24:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:24:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:24:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:24:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:24:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:24:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:24:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:24:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:24:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:24:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:24:36,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:24:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:24:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:24:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:24:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:24:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:24:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:24:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:24:36,945 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:24:36,945 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:24:36,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:24:36,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:24:36,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:24:36,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:24:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:24:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:24:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:24:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:24:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:24:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:24:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:24:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:24:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:24:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:24:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:24:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:24:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:24:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:24:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:24:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:24:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:24:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 10:24:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:24:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:24:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:24:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:24:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:24:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:24:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:24:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:24:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:24:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:24:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:24:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:24:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:24:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 10:24:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:24:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:24:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:24:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:24:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:24:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:24:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:24:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:24:37,888 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:24:37,888 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:24:37,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:24:37 BoogieIcfgContainer [2020-08-18 10:24:37,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:24:37,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:24:37,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:24:37,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:24:37,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:24:36" (1/3) ... [2020-08-18 10:24:37,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7047b7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:24:37, skipping insertion in model container [2020-08-18 10:24:37,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:36" (2/3) ... [2020-08-18 10:24:37,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7047b7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:24:37, skipping insertion in model container [2020-08-18 10:24:37,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:24:37" (3/3) ... [2020-08-18 10:24:37,902 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2020-08-18 10:24:37,912 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:24:37,920 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:24:37,934 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:24:37,957 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:24:37,958 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:24:37,958 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:24:37,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:24:37,958 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:24:37,958 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:24:37,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:24:37,959 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:24:37,985 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-18 10:24:37,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 10:24:37,995 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:37,997 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] [2020-08-18 10:24:37,997 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:38,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:38,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1915366745, now seen corresponding path program 1 times [2020-08-18 10:24:38,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:38,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911579148] [2020-08-18 10:24:38,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:38,642 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:38,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:38,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:38,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:38,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:38,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:38,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:24:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:38,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:24:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:38,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911579148] [2020-08-18 10:24:38,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:38,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:24:38,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696748563] [2020-08-18 10:24:38,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:24:38,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:38,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:24:38,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:24:38,772 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-18 10:24:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:39,899 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2020-08-18 10:24:39,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:24:39,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 10:24:39,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:39,928 INFO L225 Difference]: With dead ends: 310 [2020-08-18 10:24:39,928 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 10:24:39,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:24:39,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 10:24:40,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-08-18 10:24:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 10:24:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-08-18 10:24:40,055 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 46 [2020-08-18 10:24:40,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:40,056 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-08-18 10:24:40,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:24:40,057 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-08-18 10:24:40,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 10:24:40,062 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:40,062 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] [2020-08-18 10:24:40,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:24:40,063 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:40,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:40,063 INFO L82 PathProgramCache]: Analyzing trace with hash -868486899, now seen corresponding path program 1 times [2020-08-18 10:24:40,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:40,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78948845] [2020-08-18 10:24:40,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,413 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:40,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:24:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:24:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:40,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78948845] [2020-08-18 10:24:40,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:40,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:24:40,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009755239] [2020-08-18 10:24:40,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:24:40,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:40,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:24:40,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:24:40,458 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 4 states. [2020-08-18 10:24:40,851 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:41,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:41,722 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2020-08-18 10:24:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:24:41,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 10:24:41,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:41,729 INFO L225 Difference]: With dead ends: 230 [2020-08-18 10:24:41,729 INFO L226 Difference]: Without dead ends: 152 [2020-08-18 10:24:41,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:24:41,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-18 10:24:41,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-08-18 10:24:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 10:24:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2020-08-18 10:24:41,782 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 47 [2020-08-18 10:24:41,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:41,783 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2020-08-18 10:24:41,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:24:41,783 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2020-08-18 10:24:41,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:24:41,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:41,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:41,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:24:41,786 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:41,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:41,786 INFO L82 PathProgramCache]: Analyzing trace with hash -905097918, now seen corresponding path program 1 times [2020-08-18 10:24:41,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:41,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957496912] [2020-08-18 10:24:41,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,124 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:42,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:24:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:24:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:42,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957496912] [2020-08-18 10:24:42,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:42,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:24:42,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266536805] [2020-08-18 10:24:42,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:24:42,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:42,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:24:42,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:24:42,285 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand 8 states. [2020-08-18 10:24:42,643 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:42,991 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:43,245 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:43,478 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:44,243 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:45,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:45,949 INFO L93 Difference]: Finished difference Result 427 states and 518 transitions. [2020-08-18 10:24:45,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:24:45,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 10:24:45,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:45,954 INFO L225 Difference]: With dead ends: 427 [2020-08-18 10:24:45,954 INFO L226 Difference]: Without dead ends: 327 [2020-08-18 10:24:45,956 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 [2020-08-18 10:24:45,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-18 10:24:46,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2020-08-18 10:24:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-08-18 10:24:46,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 294 transitions. [2020-08-18 10:24:46,032 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 294 transitions. Word has length 52 [2020-08-18 10:24:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:46,032 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 294 transitions. [2020-08-18 10:24:46,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:24:46,032 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 294 transitions. [2020-08-18 10:24:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 10:24:46,035 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:46,035 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] [2020-08-18 10:24:46,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:24:46,036 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:46,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:46,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1583600214, now seen corresponding path program 1 times [2020-08-18 10:24:46,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:46,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520321595] [2020-08-18 10:24:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,357 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:46,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:24:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:24:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 10:24:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:46,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520321595] [2020-08-18 10:24:46,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:46,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:24:46,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582796578] [2020-08-18 10:24:46,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:24:46,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:46,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:24:46,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:24:46,507 INFO L87 Difference]: Start difference. First operand 250 states and 294 transitions. Second operand 12 states. [2020-08-18 10:24:46,933 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:47,272 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:47,524 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:47,769 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:48,346 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:49,101 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:49,463 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:49,748 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:50,085 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:50,340 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:24:50,690 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:50,955 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:51,193 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:52,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:52,743 INFO L93 Difference]: Finished difference Result 1013 states and 1362 transitions. [2020-08-18 10:24:52,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 10:24:52,744 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 10:24:52,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:52,752 INFO L225 Difference]: With dead ends: 1013 [2020-08-18 10:24:52,752 INFO L226 Difference]: Without dead ends: 787 [2020-08-18 10:24:52,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 10:24:52,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-18 10:24:52,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 690. [2020-08-18 10:24:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-08-18 10:24:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 848 transitions. [2020-08-18 10:24:52,945 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 848 transitions. Word has length 57 [2020-08-18 10:24:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:52,946 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 848 transitions. [2020-08-18 10:24:52,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:24:52,946 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 848 transitions. [2020-08-18 10:24:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 10:24:52,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:52,950 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] [2020-08-18 10:24:52,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:24:52,951 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:52,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:52,951 INFO L82 PathProgramCache]: Analyzing trace with hash -436303684, now seen corresponding path program 1 times [2020-08-18 10:24:52,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:52,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025288343] [2020-08-18 10:24:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:53,246 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:53,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:53,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:53,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:53,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:53,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:24:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:53,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:24:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:53,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 10:24:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:53,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 10:24:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:53,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025288343] [2020-08-18 10:24:53,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:53,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:24:53,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80465354] [2020-08-18 10:24:53,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:24:53,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:53,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:24:53,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:24:53,340 INFO L87 Difference]: Start difference. First operand 690 states and 848 transitions. Second operand 6 states. [2020-08-18 10:24:53,655 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:55,366 INFO L93 Difference]: Finished difference Result 1681 states and 2195 transitions. [2020-08-18 10:24:55,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 10:24:55,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 10:24:55,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:55,377 INFO L225 Difference]: With dead ends: 1681 [2020-08-18 10:24:55,377 INFO L226 Difference]: Without dead ends: 1015 [2020-08-18 10:24:55,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:24:55,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-08-18 10:24:55,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 948. [2020-08-18 10:24:55,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-18 10:24:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1172 transitions. [2020-08-18 10:24:55,574 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1172 transitions. Word has length 61 [2020-08-18 10:24:55,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:55,574 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1172 transitions. [2020-08-18 10:24:55,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:24:55,575 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1172 transitions. [2020-08-18 10:24:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 10:24:55,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:55,578 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:55,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:24:55,578 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:55,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:55,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1209411089, now seen corresponding path program 1 times [2020-08-18 10:24:55,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:55,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780333491] [2020-08-18 10:24:55,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,852 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:55,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:24:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:24:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 10:24:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 10:24:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:24:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 10:24:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 10:24:56,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780333491] [2020-08-18 10:24:56,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:24:56,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:24:56,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460040582] [2020-08-18 10:24:56,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:24:56,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:56,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:24:56,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:24:56,042 INFO L87 Difference]: Start difference. First operand 948 states and 1172 transitions. Second operand 10 states. [2020-08-18 10:24:56,683 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 10:24:57,260 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:59,200 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:00,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:00,735 INFO L93 Difference]: Finished difference Result 1803 states and 2319 transitions. [2020-08-18 10:25:00,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 10:25:00,736 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-18 10:25:00,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:00,743 INFO L225 Difference]: With dead ends: 1803 [2020-08-18 10:25:00,743 INFO L226 Difference]: Without dead ends: 1150 [2020-08-18 10:25:00,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 10:25:00,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-08-18 10:25:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1055. [2020-08-18 10:25:01,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-08-18 10:25:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1284 transitions. [2020-08-18 10:25:01,013 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1284 transitions. Word has length 89 [2020-08-18 10:25:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:01,016 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1284 transitions. [2020-08-18 10:25:01,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:25:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1284 transitions. [2020-08-18 10:25:01,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-18 10:25:01,023 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:01,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:01,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:25:01,024 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:01,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:01,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1717622205, now seen corresponding path program 1 times [2020-08-18 10:25:01,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:01,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022006359] [2020-08-18 10:25:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,418 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:01,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:25:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:25:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 10:25:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 10:25:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 10:25:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 10:25:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 10:25:01,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022006359] [2020-08-18 10:25:01,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:01,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:25:01,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634436747] [2020-08-18 10:25:01,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:25:01,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:01,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:25:01,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:25:01,608 INFO L87 Difference]: Start difference. First operand 1055 states and 1284 transitions. Second operand 10 states. [2020-08-18 10:25:02,618 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:02,908 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:25:03,206 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:03,454 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:04,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:04,645 INFO L93 Difference]: Finished difference Result 2230 states and 2894 transitions. [2020-08-18 10:25:04,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:25:04,645 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-08-18 10:25:04,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:04,654 INFO L225 Difference]: With dead ends: 2230 [2020-08-18 10:25:04,655 INFO L226 Difference]: Without dead ends: 1199 [2020-08-18 10:25:04,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:25:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-18 10:25:04,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1085. [2020-08-18 10:25:04,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-08-18 10:25:04,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1318 transitions. [2020-08-18 10:25:04,879 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1318 transitions. Word has length 126 [2020-08-18 10:25:04,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:04,881 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1318 transitions. [2020-08-18 10:25:04,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:25:04,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1318 transitions. [2020-08-18 10:25:04,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 10:25:04,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:04,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:04,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:25:04,885 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:04,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:04,886 INFO L82 PathProgramCache]: Analyzing trace with hash -936716097, now seen corresponding path program 1 times [2020-08-18 10:25:04,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:04,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468324969] [2020-08-18 10:25:04,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,157 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:05,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:25:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:25:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 10:25:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 10:25:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 10:25:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 10:25:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 10:25:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,394 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 10:25:05,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468324969] [2020-08-18 10:25:05,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:05,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:25:05,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833447619] [2020-08-18 10:25:05,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:25:05,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:05,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:25:05,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:05,398 INFO L87 Difference]: Start difference. First operand 1085 states and 1318 transitions. Second operand 12 states. [2020-08-18 10:25:06,044 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:06,288 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:06,519 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:07,152 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:07,410 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:07,660 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:08,708 INFO L93 Difference]: Finished difference Result 1969 states and 2463 transitions. [2020-08-18 10:25:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:25:08,709 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-18 10:25:08,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:08,714 INFO L225 Difference]: With dead ends: 1969 [2020-08-18 10:25:08,715 INFO L226 Difference]: Without dead ends: 908 [2020-08-18 10:25:08,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:25:08,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-08-18 10:25:08,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 856. [2020-08-18 10:25:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2020-08-18 10:25:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1029 transitions. [2020-08-18 10:25:08,911 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1029 transitions. Word has length 130 [2020-08-18 10:25:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:08,912 INFO L479 AbstractCegarLoop]: Abstraction has 856 states and 1029 transitions. [2020-08-18 10:25:08,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:25:08,912 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1029 transitions. [2020-08-18 10:25:08,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 10:25:08,917 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:08,917 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:08,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:25:08,918 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:08,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:08,919 INFO L82 PathProgramCache]: Analyzing trace with hash -41255168, now seen corresponding path program 1 times [2020-08-18 10:25:08,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:08,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267990813] [2020-08-18 10:25:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,237 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:25:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:25:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 10:25:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 10:25:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 10:25:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 10:25:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:25:09,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267990813] [2020-08-18 10:25:09,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:09,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:25:09,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807506461] [2020-08-18 10:25:09,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:25:09,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:09,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:25:09,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:09,431 INFO L87 Difference]: Start difference. First operand 856 states and 1029 transitions. Second operand 12 states. [2020-08-18 10:25:09,886 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:10,688 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:10,961 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:11,186 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:11,419 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:11,636 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:11,995 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:12,547 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:12,812 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:13,094 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:14,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:14,780 INFO L93 Difference]: Finished difference Result 2072 states and 2648 transitions. [2020-08-18 10:25:14,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 10:25:14,781 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-18 10:25:14,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:14,789 INFO L225 Difference]: With dead ends: 2072 [2020-08-18 10:25:14,789 INFO L226 Difference]: Without dead ends: 1389 [2020-08-18 10:25:14,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-18 10:25:14,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-08-18 10:25:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1217. [2020-08-18 10:25:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-08-18 10:25:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1483 transitions. [2020-08-18 10:25:15,078 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1483 transitions. Word has length 130 [2020-08-18 10:25:15,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:15,081 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1483 transitions. [2020-08-18 10:25:15,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:25:15,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1483 transitions. [2020-08-18 10:25:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-18 10:25:15,088 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:15,088 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:15,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:25:15,089 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:15,089 INFO L82 PathProgramCache]: Analyzing trace with hash -786970621, now seen corresponding path program 1 times [2020-08-18 10:25:15,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:15,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306890108] [2020-08-18 10:25:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,364 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:15,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:25:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:25:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 10:25:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:25:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 10:25:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 10:25:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-18 10:25:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-18 10:25:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-18 10:25:15,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306890108] [2020-08-18 10:25:15,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:15,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 10:25:15,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886124379] [2020-08-18 10:25:15,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 10:25:15,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:15,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 10:25:15,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:25:15,657 INFO L87 Difference]: Start difference. First operand 1217 states and 1483 transitions. Second operand 13 states. [2020-08-18 10:25:16,714 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:16,930 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:17,151 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:17,639 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:18,854 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:19,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:19,898 INFO L93 Difference]: Finished difference Result 2226 states and 2782 transitions. [2020-08-18 10:25:19,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 10:25:19,900 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-08-18 10:25:19,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:19,907 INFO L225 Difference]: With dead ends: 2226 [2020-08-18 10:25:19,907 INFO L226 Difference]: Without dead ends: 1233 [2020-08-18 10:25:19,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-18 10:25:19,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-08-18 10:25:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 911. [2020-08-18 10:25:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-08-18 10:25:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1058 transitions. [2020-08-18 10:25:20,118 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1058 transitions. Word has length 163 [2020-08-18 10:25:20,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:20,118 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1058 transitions. [2020-08-18 10:25:20,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 10:25:20,119 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1058 transitions. [2020-08-18 10:25:20,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-18 10:25:20,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:20,122 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:20,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:25:20,122 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:20,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:20,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1876724494, now seen corresponding path program 2 times [2020-08-18 10:25:20,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:20,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101444944] [2020-08-18 10:25:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:25:20,228 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:25:20,228 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:25:20,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:25:20,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:25:20 BoogieIcfgContainer [2020-08-18 10:25:20,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:25:20,305 INFO L168 Benchmark]: Toolchain (without parser) took 44173.56 ms. Allocated memory was 147.8 MB in the beginning and 680.0 MB in the end (delta: 532.2 MB). Free memory was 105.5 MB in the beginning and 236.0 MB in the end (delta: -130.5 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:20,306 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 10:25:20,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.60 ms. Allocated memory was 147.8 MB in the beginning and 206.6 MB in the end (delta: 58.7 MB). Free memory was 105.3 MB in the beginning and 176.3 MB in the end (delta: -71.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:20,308 INFO L168 Benchmark]: Boogie Preprocessor took 82.43 ms. Allocated memory is still 206.6 MB. Free memory was 176.3 MB in the beginning and 172.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:20,309 INFO L168 Benchmark]: RCFGBuilder took 1015.79 ms. Allocated memory was 206.6 MB in the beginning and 234.4 MB in the end (delta: 27.8 MB). Free memory was 172.3 MB in the beginning and 191.9 MB in the end (delta: -19.6 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:20,309 INFO L168 Benchmark]: TraceAbstraction took 42408.87 ms. Allocated memory was 234.4 MB in the beginning and 680.0 MB in the end (delta: 445.6 MB). Free memory was 190.6 MB in the beginning and 236.0 MB in the end (delta: -45.3 MB). Peak memory consumption was 400.3 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:20,317 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 661.60 ms. Allocated memory was 147.8 MB in the beginning and 206.6 MB in the end (delta: 58.7 MB). Free memory was 105.3 MB in the beginning and 176.3 MB in the end (delta: -71.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.43 ms. Allocated memory is still 206.6 MB. Free memory was 176.3 MB in the beginning and 172.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1015.79 ms. Allocated memory was 206.6 MB in the beginning and 234.4 MB in the end (delta: 27.8 MB). Free memory was 172.3 MB in the beginning and 191.9 MB in the end (delta: -19.6 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42408.87 ms. Allocated memory was 234.4 MB in the beginning and 680.0 MB in the end (delta: 445.6 MB). Free memory was 190.6 MB in the beginning and 236.0 MB in the end (delta: -45.3 MB). Peak memory consumption was 400.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 752]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L757] int cleanupTimeShifts = 4; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; [L835] FCALL select_helpers() [L836] FCALL select_features() [L837] CALL, EXPR valid_product() [L464] int retValue_acc ; [L467] retValue_acc = 1 [L468] return (retValue_acc); [L837] RET, EXPR valid_product() [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) [L841] FCALL setup() [L842] CALL runTest() [L824] CALL test() [L480] int splverifierCounter ; [L481] int tmp ; [L482] int tmp___0 ; [L483] int tmp___1 ; [L484] int tmp___2 ; [L487] splverifierCounter = 0 [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp) [L501] CALL waterRise() [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 [L501] RET waterRise() [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L625] int tmp ; [L629] CALL, EXPR isMethaneAlarm() [L650] int retValue_acc ; [L654] CALL, EXPR isMethaneLevelCritical() [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); [L654] RET, EXPR isMethaneLevelCritical() [L654] retValue_acc = isMethaneLevelCritical() [L656] return (retValue_acc); [L629] RET, EXPR isMethaneAlarm() [L629] tmp = isMethaneAlarm() [L631] COND FALSE !(\read(tmp)) [L635] CALL activatePump__wrappee__highWaterSensor() [L619] pumpRunning = 1 [L635] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L752] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 35.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1357 SDtfs, 3146 SDslu, 1751 SDs, 0 SdLazy, 8576 SolverSat, 2309 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 475 GetRequests, 314 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 14.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1217occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 1059 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1067 NumberOfCodeBlocks, 1067 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 891 ConstructedInterpolants, 0 QuantifiedInterpolants, 329455 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 152/172 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...