/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_spec3_product05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:21:32,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:21:32,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:21:32,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:21:32,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:21:32,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:21:32,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:21:32,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:21:32,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:21:32,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:21:32,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:21:32,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:21:32,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:21:32,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:21:32,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:21:32,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:21:32,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:21:32,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:21:32,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:21:32,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:21:32,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:21:32,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:21:32,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:21:32,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:21:32,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:21:32,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:21:32,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:21:32,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:21:32,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:21:32,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:21:32,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:21:32,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:21:32,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:21:32,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:21:32,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:21:32,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:21:32,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:21:32,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:21:32,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:21:32,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:21:32,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:21:32,150 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 10:21:32,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:21:32,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:21:32,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:21:32,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:21:32,174 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:21:32,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:21:32,175 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:21:32,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:21:32,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:21:32,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:21:32,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:21:32,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:21:32,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:21:32,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:21:32,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:21:32,177 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:21:32,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:21:32,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:21:32,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:21:32,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:21:32,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:21:32,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:21:32,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:21:32,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:21:32,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:21:32,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:21:32,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:21:32,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:21:32,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:21:32,180 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 10:21:32,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:21:32,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:21:32,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:21:32,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:21:32,548 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:21:32,549 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2020-08-18 10:21:32,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e45923731/639e9f87a1a94270aeb3738b352904e1/FLAG1760e6778 [2020-08-18 10:21:33,094 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:21:33,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2020-08-18 10:21:33,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e45923731/639e9f87a1a94270aeb3738b352904e1/FLAG1760e6778 [2020-08-18 10:21:33,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e45923731/639e9f87a1a94270aeb3738b352904e1 [2020-08-18 10:21:33,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:21:33,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:21:33,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:21:33,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:21:33,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:21:33,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:21:33" (1/1) ... [2020-08-18 10:21:33,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16606ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:33, skipping insertion in model container [2020-08-18 10:21:33,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:21:33" (1/1) ... [2020-08-18 10:21:33,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:21:33,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:21:33,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:21:33,895 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:21:33,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:21:34,011 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:21:34,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:34 WrapperNode [2020-08-18 10:21:34,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:21:34,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:21:34,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:21:34,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:21:34,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:34" (1/1) ... [2020-08-18 10:21:34,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:34" (1/1) ... [2020-08-18 10:21:34,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:34" (1/1) ... [2020-08-18 10:21:34,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:34" (1/1) ... [2020-08-18 10:21:34,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:34" (1/1) ... [2020-08-18 10:21:34,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:34" (1/1) ... [2020-08-18 10:21:34,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:34" (1/1) ... [2020-08-18 10:21:34,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:21:34,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:21:34,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:21:34,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:21:34,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:34" (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 10:21:34,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:21:34,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:21:34,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:21:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:21:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:21:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:21:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:21:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:21:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:21:34,189 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:21:34,189 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:21:34,190 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:21:34,190 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:21:34,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:21:34,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:21:34,191 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:21:34,191 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:21:34,191 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:21:34,191 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:21:34,191 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:21:34,192 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:21:34,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:21:34,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:21:34,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:21:34,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:21:34,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:21:34,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:21:34,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:21:34,193 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:21:34,194 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:21:34,194 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:21:34,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:21:34,194 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:21:34,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:21:34,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:21:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:21:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:21:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:21:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:21:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:21:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:21:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:21:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:21:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:21:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:21:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:21:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:21:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:21:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:21:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:21:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:21:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:21:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:21:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:21:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:21:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:21:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:21:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:21:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:21:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:21:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:21:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:21:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:21:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:21:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:21:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:21:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:21:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:21:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:21:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:21:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:21:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:21:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:21:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:21:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:21:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:21:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:21:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:21:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:21:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:21:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:21:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:21:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:21:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:21:35,252 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:21:35,252 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:21:35,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:21:35 BoogieIcfgContainer [2020-08-18 10:21:35,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:21:35,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:21:35,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:21:35,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:21:35,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:21:33" (1/3) ... [2020-08-18 10:21:35,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3960201d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:21:35, skipping insertion in model container [2020-08-18 10:21:35,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:34" (2/3) ... [2020-08-18 10:21:35,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3960201d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:21:35, skipping insertion in model container [2020-08-18 10:21:35,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:21:35" (3/3) ... [2020-08-18 10:21:35,267 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product05.cil.c [2020-08-18 10:21:35,279 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:21:35,288 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:21:35,304 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:21:35,329 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:21:35,330 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:21:35,330 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:21:35,330 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:21:35,330 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:21:35,331 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:21:35,331 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:21:35,331 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:21:35,353 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-08-18 10:21:35,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:21:35,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:35,365 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 10:21:35,365 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:35,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:35,372 INFO L82 PathProgramCache]: Analyzing trace with hash 385551815, now seen corresponding path program 1 times [2020-08-18 10:21:35,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:35,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113872561] [2020-08-18 10:21:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,079 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:36,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:21:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:21:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,203 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 10:21:36,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113872561] [2020-08-18 10:21:36,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:36,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:21:36,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98524437] [2020-08-18 10:21:36,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:21:36,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:36,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:21:36,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:21:36,241 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-08-18 10:21:37,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:37,244 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-18 10:21:37,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:21:37,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 10:21:37,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:37,260 INFO L225 Difference]: With dead ends: 249 [2020-08-18 10:21:37,260 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 10:21:37,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:21:37,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 10:21:37,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-18 10:21:37,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 10:21:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-18 10:21:37,340 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 52 [2020-08-18 10:21:37,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:37,340 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-18 10:21:37,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:21:37,341 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-18 10:21:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 10:21:37,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:37,344 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] [2020-08-18 10:21:37,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:21:37,345 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:37,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:37,345 INFO L82 PathProgramCache]: Analyzing trace with hash 881400109, now seen corresponding path program 1 times [2020-08-18 10:21:37,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:37,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892062112] [2020-08-18 10:21:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:37,649 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:37,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:37,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:37,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:37,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:37,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:21:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:37,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:21:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:37,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:21:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:37,691 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 10:21:37,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892062112] [2020-08-18 10:21:37,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:37,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:21:37,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622676553] [2020-08-18 10:21:37,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:21:37,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:37,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:21:37,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:21:37,695 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-18 10:21:38,097 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:38,736 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-18 10:21:38,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:21:38,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 10:21:38,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:38,744 INFO L225 Difference]: With dead ends: 182 [2020-08-18 10:21:38,744 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 10:21:38,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 10:21:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 10:21:38,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 10:21:38,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 10:21:38,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-18 10:21:38,779 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 53 [2020-08-18 10:21:38,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:38,780 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-18 10:21:38,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:21:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-18 10:21:38,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 10:21:38,782 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:38,782 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 10:21:38,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:21:38,783 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:38,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:38,783 INFO L82 PathProgramCache]: Analyzing trace with hash 633168041, now seen corresponding path program 1 times [2020-08-18 10:21:38,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:38,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002751654] [2020-08-18 10:21:38,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:39,161 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:39,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:39,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:39,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:39,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:39,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:39,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:21:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:39,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:21:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:39,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 10:21:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:39,295 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 10:21:39,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002751654] [2020-08-18 10:21:39,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:39,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:21:39,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932278931] [2020-08-18 10:21:39,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:21:39,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:39,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:21:39,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:21:39,299 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-18 10:21:39,645 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:39,965 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:40,245 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:40,495 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:41,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:41,381 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-18 10:21:41,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:21:41,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 10:21:41,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:41,388 INFO L225 Difference]: With dead ends: 191 [2020-08-18 10:21:41,388 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 10:21:41,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:21:41,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 10:21:41,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 10:21:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 10:21:41,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-18 10:21:41,421 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 57 [2020-08-18 10:21:41,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:41,421 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-18 10:21:41,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:21:41,422 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-18 10:21:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 10:21:41,424 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:41,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:41,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:21:41,425 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:41,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:41,425 INFO L82 PathProgramCache]: Analyzing trace with hash 119188522, now seen corresponding path program 1 times [2020-08-18 10:21:41,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:41,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086559874] [2020-08-18 10:21:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,720 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:41,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:21:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:21:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 10:21:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 10:21:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,802 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 10:21:41,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086559874] [2020-08-18 10:21:41,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:41,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:21:41,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156303960] [2020-08-18 10:21:41,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:21:41,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:41,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:21:41,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:21:41,805 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 8 states. [2020-08-18 10:21:42,182 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:43,456 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:43,754 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:44,001 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:44,371 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:44,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:44,691 INFO L93 Difference]: Finished difference Result 284 states and 375 transitions. [2020-08-18 10:21:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 10:21:44,691 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-08-18 10:21:44,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:44,696 INFO L225 Difference]: With dead ends: 284 [2020-08-18 10:21:44,697 INFO L226 Difference]: Without dead ends: 212 [2020-08-18 10:21:44,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:21:44,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-18 10:21:44,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 166. [2020-08-18 10:21:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-18 10:21:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 197 transitions. [2020-08-18 10:21:44,743 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 197 transitions. Word has length 65 [2020-08-18 10:21:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:44,744 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 197 transitions. [2020-08-18 10:21:44,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:21:44,744 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 197 transitions. [2020-08-18 10:21:44,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 10:21:44,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:44,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:44,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:21:44,747 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:44,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:44,748 INFO L82 PathProgramCache]: Analyzing trace with hash 2068866518, now seen corresponding path program 1 times [2020-08-18 10:21:44,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:44,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942735128] [2020-08-18 10:21:44,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:45,022 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:45,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:45,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:45,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:45,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:45,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:45,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:21:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:45,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:21:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:45,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:21:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:45,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:45,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 10:21:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:45,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 10:21:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:45,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 10:21:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:45,142 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 10:21:45,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942735128] [2020-08-18 10:21:45,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:45,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:21:45,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700530399] [2020-08-18 10:21:45,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:21:45,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:45,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:21:45,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:21:45,147 INFO L87 Difference]: Start difference. First operand 166 states and 197 transitions. Second operand 6 states. [2020-08-18 10:21:45,433 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:45,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:45,916 INFO L93 Difference]: Finished difference Result 279 states and 345 transitions. [2020-08-18 10:21:45,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 10:21:45,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-08-18 10:21:45,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:45,922 INFO L225 Difference]: With dead ends: 279 [2020-08-18 10:21:45,922 INFO L226 Difference]: Without dead ends: 137 [2020-08-18 10:21:45,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:21:45,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-18 10:21:45,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2020-08-18 10:21:45,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 10:21:45,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2020-08-18 10:21:45,953 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 73 [2020-08-18 10:21:45,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:45,953 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2020-08-18 10:21:45,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:21:45,954 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2020-08-18 10:21:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 10:21:45,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:45,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:45,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:21:45,956 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:45,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:45,956 INFO L82 PathProgramCache]: Analyzing trace with hash -760855184, now seen corresponding path program 1 times [2020-08-18 10:21:45,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:45,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154575866] [2020-08-18 10:21:45,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:21:46,013 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:21:46,013 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:21:46,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:21:46,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:21:46 BoogieIcfgContainer [2020-08-18 10:21:46,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:21:46,042 INFO L168 Benchmark]: Toolchain (without parser) took 12590.88 ms. Allocated memory was 142.1 MB in the beginning and 445.1 MB in the end (delta: 303.0 MB). Free memory was 103.9 MB in the beginning and 344.4 MB in the end (delta: -240.5 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:46,043 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 10:21:46,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 559.30 ms. Allocated memory was 142.1 MB in the beginning and 202.9 MB in the end (delta: 60.8 MB). Free memory was 103.7 MB in the beginning and 170.8 MB in the end (delta: -67.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:46,045 INFO L168 Benchmark]: Boogie Preprocessor took 94.72 ms. Allocated memory is still 202.9 MB. Free memory was 170.8 MB in the beginning and 166.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:46,046 INFO L168 Benchmark]: RCFGBuilder took 1150.40 ms. Allocated memory was 202.9 MB in the beginning and 232.8 MB in the end (delta: 29.9 MB). Free memory was 166.7 MB in the beginning and 191.8 MB in the end (delta: -25.1 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:46,047 INFO L168 Benchmark]: TraceAbstraction took 10781.05 ms. Allocated memory was 232.8 MB in the beginning and 445.1 MB in the end (delta: 212.3 MB). Free memory was 191.8 MB in the beginning and 344.4 MB in the end (delta: -152.6 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:46,051 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 559.30 ms. Allocated memory was 142.1 MB in the beginning and 202.9 MB in the end (delta: 60.8 MB). Free memory was 103.7 MB in the beginning and 170.8 MB in the end (delta: -67.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.72 ms. Allocated memory is still 202.9 MB. Free memory was 170.8 MB in the beginning and 166.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1150.40 ms. Allocated memory was 202.9 MB in the beginning and 232.8 MB in the end (delta: 29.9 MB). Free memory was 166.7 MB in the beginning and 191.8 MB in the end (delta: -25.1 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10781.05 ms. Allocated memory was 232.8 MB in the beginning and 445.1 MB in the end (delta: 212.3 MB). Free memory was 191.8 MB in the beginning and 344.4 MB in the end (delta: -152.6 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L95] int pumpRunning = 0; [L96] int systemActive = 1; [L297] int cleanupTimeShifts = 4; [L562] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L760] int waterLevel = 1; [L761] int methaneLevelCritical = 0; [L370] int retValue_acc ; [L371] int tmp ; [L375] FCALL select_helpers() [L376] FCALL select_features() [L377] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L377] RET, EXPR valid_product() [L377] tmp = valid_product() [L379] COND TRUE \read(tmp) [L381] FCALL setup() [L382] CALL runTest() [L364] CALL test() [L233] int splverifierCounter ; [L234] int tmp ; [L235] int tmp___0 ; [L236] int tmp___1 ; [L237] int tmp___2 ; [L240] splverifierCounter = 0 [L242] COND TRUE 1 [L244] COND TRUE splverifierCounter < 4 [L250] tmp = __VERIFIER_nondet_int() [L252] COND TRUE \read(tmp) [L254] CALL waterRise() [L778] COND TRUE waterLevel < 2 [L779] waterLevel = waterLevel + 1 [L254] RET waterRise() [L260] tmp___0 = __VERIFIER_nondet_int() [L262] COND FALSE !(\read(tmp___0)) [L270] tmp___2 = __VERIFIER_nondet_int() [L272] COND TRUE \read(tmp___2) [L285] CALL timeShift() [L103] COND FALSE !(\read(pumpRunning)) [L110] COND TRUE \read(systemActive) [L112] CALL processEnvironment() [L132] int tmp ; [L135] COND FALSE !(\read(pumpRunning)) [L150] FCALL processEnvironment__wrappee__base() [L112] RET processEnvironment() [L118] CALL __utac_acc__Specification3_spec__1() [L841] int tmp ; [L842] int tmp___0 ; [L843] int tmp___1 ; [L847] CALL, EXPR isMethaneLevelCritical() [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); [L847] RET, EXPR isMethaneLevelCritical() [L847] tmp = isMethaneLevelCritical() [L849] COND FALSE !(\read(tmp)) [L853] CALL, EXPR getWaterLevel() [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); [L853] RET, EXPR getWaterLevel() [L853] tmp___0 = getWaterLevel() [L855] COND TRUE tmp___0 == 2 [L857] CALL, EXPR isPumpRunning() [L184] int retValue_acc ; [L187] retValue_acc = pumpRunning [L188] return (retValue_acc); [L857] RET, EXPR isPumpRunning() [L857] tmp___1 = isPumpRunning() [L859] COND FALSE !(\read(tmp___1)) [L863] CALL __automaton_fail() [L82] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 431 SDtfs, 689 SDslu, 236 SDs, 0 SdLazy, 1251 SolverSat, 420 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 134 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 84162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...