/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:12:11,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:12:11,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:12:11,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:12:11,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:12:11,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:12:11,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:12:11,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:12:11,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:12:11,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:12:11,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:12:11,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:12:11,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:12:11,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:12:11,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:12:11,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:12:11,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:12:11,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:12:11,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:12:11,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:12:11,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:12:11,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:12:11,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:12:11,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:12:11,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:12:11,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:12:11,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:12:11,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:12:11,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:12:11,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:12:11,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:12:11,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:12:11,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:12:11,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:12:11,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:12:11,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:12:11,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:12:11,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:12:11,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:12:11,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:12:11,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:12:11,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:12:11,113 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:12:11,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:12:11,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:12:11,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:12:11,118 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:12:11,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:12:11,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:12:11,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:12:11,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:12:11,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:12:11,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:12:11,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:12:11,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:12:11,121 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:12:11,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:12:11,121 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:12:11,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:12:11,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:12:11,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:12:11,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:12:11,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:12:11,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:12:11,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:12:11,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:12:11,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:12:11,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:12:11,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:12:11,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:12:11,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:12:11,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:12:11,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:12:11,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:12:11,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:12:11,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:12:11,446 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:12:11,450 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-19 00:12:11,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14989e77b/0e19c5adc7d24b558b13e08f9732d332/FLAG333538c1b [2020-08-19 00:12:12,081 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:12:12,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-19 00:12:12,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14989e77b/0e19c5adc7d24b558b13e08f9732d332/FLAG333538c1b [2020-08-19 00:12:12,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14989e77b/0e19c5adc7d24b558b13e08f9732d332 [2020-08-19 00:12:12,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:12:12,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:12:12,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:12:12,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:12:12,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:12:12,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:12:12" (1/1) ... [2020-08-19 00:12:12,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e175ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:12:12, skipping insertion in model container [2020-08-19 00:12:12,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:12:12" (1/1) ... [2020-08-19 00:12:12,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:12:12,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:12:12,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:12:12,890 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:12:13,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:12:13,046 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:12:13,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:12:13 WrapperNode [2020-08-19 00:12:13,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:12:13,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:12:13,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:12:13,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:12:13,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:12:13" (1/1) ... [2020-08-19 00:12:13,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:12:13" (1/1) ... [2020-08-19 00:12:13,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:12:13" (1/1) ... [2020-08-19 00:12:13,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:12:13" (1/1) ... [2020-08-19 00:12:13,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:12:13" (1/1) ... [2020-08-19 00:12:13,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:12:13" (1/1) ... [2020-08-19 00:12:13,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:12:13" (1/1) ... [2020-08-19 00:12:13,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:12:13,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:12:13,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:12:13,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:12:13,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:12:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:12:13,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:12:13,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:12:13,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:12:13,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:12:13,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:12:13,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:12:13,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:12:13,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:12:13,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:12:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:12:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:12:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:12:13,221 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:12:13,221 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:12:13,221 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:12:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:12:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:12:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:12:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:12:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:12:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:12:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:12:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:12:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:12:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:12:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:12:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:12:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:12:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:12:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:12:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:12:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:12:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:12:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:12:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:12:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:12:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 00:12:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:12:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:12:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:12:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:12:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:12:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:12:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:12:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:12:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:12:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:12:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:12:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:12:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:12:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:12:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:12:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:12:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:12:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:12:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:12:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:12:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:12:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:12:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:12:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:12:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:12:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:12:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:12:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:12:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:12:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:12:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:12:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:12:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:12:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:12:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:12:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:12:13,239 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:12:13,239 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:12:13,239 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:12:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:12:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:12:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:12:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 00:12:13,241 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:12:13,241 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:12:13,241 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:12:13,241 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:12:13,241 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:12:13,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:12:13,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:12:13,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:12:14,387 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:12:14,387 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:12:14,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:12:14 BoogieIcfgContainer [2020-08-19 00:12:14,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:12:14,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:12:14,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:12:14,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:12:14,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:12:12" (1/3) ... [2020-08-19 00:12:14,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f6093c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:12:14, skipping insertion in model container [2020-08-19 00:12:14,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:12:13" (2/3) ... [2020-08-19 00:12:14,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f6093c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:12:14, skipping insertion in model container [2020-08-19 00:12:14,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:12:14" (3/3) ... [2020-08-19 00:12:14,401 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-08-19 00:12:14,412 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:12:14,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:12:14,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:12:14,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:12:14,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:12:14,460 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:12:14,460 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:12:14,461 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:12:14,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:12:14,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:12:14,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:12:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-08-19 00:12:14,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 00:12:14,494 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:12:14,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:12:14,496 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:12:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:12:14,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1120421974, now seen corresponding path program 1 times [2020-08-19 00:12:14,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:12:14,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962399239] [2020-08-19 00:12:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:12:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:15,195 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:12:15,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:12:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:15,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:12:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:15,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:12:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:15,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:12:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:15,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:12:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:15,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:12:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:15,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:12:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:12:15,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962399239] [2020-08-19 00:12:15,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:12:15,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:12:15,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819750973] [2020-08-19 00:12:15,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:12:15,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:12:15,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:12:15,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:12:15,371 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-08-19 00:12:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:12:16,415 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-19 00:12:16,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:12:16,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 00:12:16,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:12:16,431 INFO L225 Difference]: With dead ends: 249 [2020-08-19 00:12:16,432 INFO L226 Difference]: Without dead ends: 135 [2020-08-19 00:12:16,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:12:16,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-19 00:12:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-19 00:12:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-19 00:12:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-19 00:12:16,523 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-08-19 00:12:16,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:12:16,523 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-19 00:12:16,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:12:16,524 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-19 00:12:16,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 00:12:16,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:12:16,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:12:16,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:12:16,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:12:16,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:12:16,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1195015831, now seen corresponding path program 1 times [2020-08-19 00:12:16,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:12:16,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864014583] [2020-08-19 00:12:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:12:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:16,882 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:12:16,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:12:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:16,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:12:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:16,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:12:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:12:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:16,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:12:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:16,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:12:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:16,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:12:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:12:16,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864014583] [2020-08-19 00:12:16,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:12:16,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:12:16,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745826937] [2020-08-19 00:12:16,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:12:16,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:12:16,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:12:16,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:12:16,972 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-19 00:12:17,389 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:12:17,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:12:17,968 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-19 00:12:17,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:12:17,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 00:12:17,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:12:17,972 INFO L225 Difference]: With dead ends: 182 [2020-08-19 00:12:17,972 INFO L226 Difference]: Without dead ends: 119 [2020-08-19 00:12:17,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:12:17,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-19 00:12:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-19 00:12:18,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-19 00:12:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-19 00:12:18,018 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-08-19 00:12:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:12:18,019 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-19 00:12:18,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:12:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-19 00:12:18,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:12:18,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:12:18,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:12:18,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:12:18,022 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:12:18,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:12:18,023 INFO L82 PathProgramCache]: Analyzing trace with hash -234309885, now seen corresponding path program 1 times [2020-08-19 00:12:18,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:12:18,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400997813] [2020-08-19 00:12:18,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:12:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:18,421 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:12:18,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:12:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:18,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:12:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:18,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:12:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:18,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:12:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:18,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:12:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:18,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:12:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:18,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:12:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:18,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:12:18,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400997813] [2020-08-19 00:12:18,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:12:18,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:12:18,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771218610] [2020-08-19 00:12:18,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:12:18,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:12:18,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:12:18,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:12:18,529 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-19 00:12:18,962 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:12:19,274 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:12:19,529 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:12:19,771 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:12:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:12:20,659 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-19 00:12:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:12:20,660 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 00:12:20,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:12:20,664 INFO L225 Difference]: With dead ends: 191 [2020-08-19 00:12:20,664 INFO L226 Difference]: Without dead ends: 119 [2020-08-19 00:12:20,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:12:20,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-19 00:12:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-19 00:12:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-19 00:12:20,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-19 00:12:20,693 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-08-19 00:12:20,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:12:20,694 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-19 00:12:20,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:12:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-19 00:12:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 00:12:20,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:12:20,696 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] [2020-08-19 00:12:20,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:12:20,697 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:12:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:12:20,697 INFO L82 PathProgramCache]: Analyzing trace with hash -962632878, now seen corresponding path program 1 times [2020-08-19 00:12:20,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:12:20,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120872232] [2020-08-19 00:12:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:12:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:20,970 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:12:20,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:12:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:21,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:12:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:21,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:12:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:21,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:12:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:12:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:21,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:12:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:21,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:12:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:21,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:12:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:21,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 00:12:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:12:21,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120872232] [2020-08-19 00:12:21,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:12:21,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:12:21,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113679171] [2020-08-19 00:12:21,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:12:21,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:12:21,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:12:21,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:12:21,048 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-08-19 00:12:21,405 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:12:22,406 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:12:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:12:22,860 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-08-19 00:12:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:12:22,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-19 00:12:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:12:22,863 INFO L225 Difference]: With dead ends: 274 [2020-08-19 00:12:22,864 INFO L226 Difference]: Without dead ends: 202 [2020-08-19 00:12:22,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:12:22,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-19 00:12:22,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-08-19 00:12:22,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-19 00:12:22,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-08-19 00:12:22,925 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-08-19 00:12:22,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:12:22,926 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-08-19 00:12:22,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:12:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-08-19 00:12:22,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-19 00:12:22,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:12:22,931 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] [2020-08-19 00:12:22,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:12:22,931 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:12:22,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:12:22,932 INFO L82 PathProgramCache]: Analyzing trace with hash 869233952, now seen corresponding path program 1 times [2020-08-19 00:12:22,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:12:22,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283417057] [2020-08-19 00:12:22,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:12:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:23,280 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:12:23,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:12:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:23,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:12:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:23,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:12:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:23,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:12:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:23,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:12:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:23,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:12:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:23,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:12:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:23,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:12:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:12:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:23,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 00:12:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:23,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 00:12:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:12:23,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283417057] [2020-08-19 00:12:23,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:12:23,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:12:23,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114468178] [2020-08-19 00:12:23,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:12:23,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:12:23,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:12:23,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:12:23,408 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 12 states. [2020-08-19 00:12:23,876 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:12:24,223 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:12:24,460 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:12:24,688 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:12:25,176 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:12:25,961 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:12:26,216 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:12:26,451 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:12:26,679 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:12:26,949 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:12:27,193 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:12:27,970 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:12:28,233 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:12:28,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:12:28,887 INFO L93 Difference]: Finished difference Result 568 states and 750 transitions. [2020-08-19 00:12:28,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 00:12:28,888 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-19 00:12:28,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:12:28,893 INFO L225 Difference]: With dead ends: 568 [2020-08-19 00:12:28,894 INFO L226 Difference]: Without dead ends: 431 [2020-08-19 00:12:28,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 00:12:28,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-08-19 00:12:28,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 373. [2020-08-19 00:12:28,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-19 00:12:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 443 transitions. [2020-08-19 00:12:28,984 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 443 transitions. Word has length 73 [2020-08-19 00:12:28,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:12:28,984 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 443 transitions. [2020-08-19 00:12:28,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:12:28,984 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 443 transitions. [2020-08-19 00:12:28,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-19 00:12:28,988 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:12:28,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:12:28,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:12:28,989 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:12:28,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:12:28,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1689893862, now seen corresponding path program 1 times [2020-08-19 00:12:28,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:12:28,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331522525] [2020-08-19 00:12:28,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:12:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,230 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:12:29,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:12:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:12:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:12:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:12:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:12:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 00:12:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:12:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:12:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:12:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:12:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:12:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 00:12:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:12:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 00:12:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 00:12:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 00:12:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:12:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 00:12:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 00:12:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 00:12:29,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331522525] [2020-08-19 00:12:29,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:12:29,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 00:12:29,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757816822] [2020-08-19 00:12:29,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 00:12:29,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:12:29,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 00:12:29,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 00:12:29,434 INFO L87 Difference]: Start difference. First operand 373 states and 443 transitions. Second operand 13 states. [2020-08-19 00:12:29,875 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:12:30,517 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:12:31,007 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:12:31,280 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 00:12:31,569 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:12:31,834 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:12:32,093 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:12:32,378 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 00:12:32,671 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:12:32,957 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:12:34,320 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:12:34,571 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:12:34,815 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:12:35,068 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:12:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:12:35,533 INFO L93 Difference]: Finished difference Result 778 states and 1000 transitions. [2020-08-19 00:12:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 00:12:35,534 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 117 [2020-08-19 00:12:35,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:12:35,538 INFO L225 Difference]: With dead ends: 778 [2020-08-19 00:12:35,539 INFO L226 Difference]: Without dead ends: 429 [2020-08-19 00:12:35,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 00:12:35,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-19 00:12:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 367. [2020-08-19 00:12:35,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-19 00:12:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 437 transitions. [2020-08-19 00:12:35,614 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 437 transitions. Word has length 117 [2020-08-19 00:12:35,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:12:35,614 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 437 transitions. [2020-08-19 00:12:35,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 00:12:35,615 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 437 transitions. [2020-08-19 00:12:35,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-19 00:12:35,617 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:12:35,617 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] [2020-08-19 00:12:35,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:12:35,617 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:12:35,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:12:35,618 INFO L82 PathProgramCache]: Analyzing trace with hash -2066212398, now seen corresponding path program 1 times [2020-08-19 00:12:35,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:12:35,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504682755] [2020-08-19 00:12:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:12:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:35,903 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:12:35,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:12:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:35,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:12:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:35,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:12:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:35,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:12:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:35,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:12:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:35,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:12:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:35,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:12:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:36,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:12:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:36,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:12:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:36,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:12:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:36,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 00:12:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:36,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:12:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:36,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:12:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:36,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 00:12:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:12:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:36,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 00:12:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:36,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 00:12:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:36,099 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 00:12:36,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504682755] [2020-08-19 00:12:36,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:12:36,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 00:12:36,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807459179] [2020-08-19 00:12:36,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:12:36,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:12:36,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:12:36,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:12:36,101 INFO L87 Difference]: Start difference. First operand 367 states and 437 transitions. Second operand 12 states. [2020-08-19 00:12:36,805 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:12:37,051 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:12:37,281 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:12:37,818 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:12:38,071 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:12:38,317 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:12:39,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:12:39,024 INFO L93 Difference]: Finished difference Result 663 states and 818 transitions. [2020-08-19 00:12:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:12:39,026 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-19 00:12:39,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:12:39,029 INFO L225 Difference]: With dead ends: 663 [2020-08-19 00:12:39,030 INFO L226 Difference]: Without dead ends: 320 [2020-08-19 00:12:39,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:12:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-19 00:12:39,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 296. [2020-08-19 00:12:39,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-19 00:12:39,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 350 transitions. [2020-08-19 00:12:39,103 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 350 transitions. Word has length 109 [2020-08-19 00:12:39,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:12:39,103 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 350 transitions. [2020-08-19 00:12:39,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:12:39,103 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 350 transitions. [2020-08-19 00:12:39,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-19 00:12:39,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:12:39,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:12:39,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:12:39,106 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:12:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:12:39,106 INFO L82 PathProgramCache]: Analyzing trace with hash 147640793, now seen corresponding path program 1 times [2020-08-19 00:12:39,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:12:39,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408949839] [2020-08-19 00:12:39,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:12:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,422 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:12:39,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:12:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:12:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:12:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:12:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:12:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 00:12:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:12:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:12:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:12:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:12:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:12:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 00:12:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:12:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 00:12:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 00:12:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:12:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 00:12:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:12:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:12:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:12:39,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408949839] [2020-08-19 00:12:39,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:12:39,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 00:12:39,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528966157] [2020-08-19 00:12:39,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:12:39,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:12:39,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:12:39,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:12:39,577 INFO L87 Difference]: Start difference. First operand 296 states and 350 transitions. Second operand 12 states. [2020-08-19 00:12:40,204 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:12:40,993 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:12:41,477 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:12:41,739 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:12:41,983 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:12:42,222 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:12:42,479 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:12:42,723 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:12:43,658 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:12:43,943 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:12:44,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:12:44,418 INFO L93 Difference]: Finished difference Result 687 states and 875 transitions. [2020-08-19 00:12:44,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 00:12:44,419 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-08-19 00:12:44,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:12:44,427 INFO L225 Difference]: With dead ends: 687 [2020-08-19 00:12:44,427 INFO L226 Difference]: Without dead ends: 469 [2020-08-19 00:12:44,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2020-08-19 00:12:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-19 00:12:44,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 393. [2020-08-19 00:12:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-08-19 00:12:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 472 transitions. [2020-08-19 00:12:44,552 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 472 transitions. Word has length 113 [2020-08-19 00:12:44,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:12:44,553 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 472 transitions. [2020-08-19 00:12:44,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:12:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 472 transitions. [2020-08-19 00:12:44,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-19 00:12:44,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:12:44,562 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, 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] [2020-08-19 00:12:44,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:12:44,562 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:12:44,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:12:44,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1088865250, now seen corresponding path program 2 times [2020-08-19 00:12:44,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:12:44,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822135284] [2020-08-19 00:12:44,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:12:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:12:44,637 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:12:44,638 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:12:44,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:12:44,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:12:44 BoogieIcfgContainer [2020-08-19 00:12:44,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:12:44,701 INFO L168 Benchmark]: Toolchain (without parser) took 32405.31 ms. Allocated memory was 137.4 MB in the beginning and 639.6 MB in the end (delta: 502.3 MB). Free memory was 99.7 MB in the beginning and 196.4 MB in the end (delta: -96.7 MB). Peak memory consumption was 405.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:12:44,706 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 00:12:44,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.36 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 99.5 MB in the beginning and 166.4 MB in the end (delta: -66.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:12:44,708 INFO L168 Benchmark]: Boogie Preprocessor took 93.22 ms. Allocated memory is still 200.8 MB. Free memory was 166.4 MB in the beginning and 162.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:12:44,708 INFO L168 Benchmark]: RCFGBuilder took 1251.97 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 162.1 MB in the beginning and 194.8 MB in the end (delta: -32.7 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:12:44,717 INFO L168 Benchmark]: TraceAbstraction took 30297.00 ms. Allocated memory was 229.6 MB in the beginning and 639.6 MB in the end (delta: 410.0 MB). Free memory was 193.4 MB in the beginning and 196.4 MB in the end (delta: -3.0 MB). Peak memory consumption was 407.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:12:44,722 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 758.36 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 99.5 MB in the beginning and 166.4 MB in the end (delta: -66.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.22 ms. Allocated memory is still 200.8 MB. Free memory was 166.4 MB in the beginning and 162.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1251.97 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 162.1 MB in the beginning and 194.8 MB in the end (delta: -32.7 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30297.00 ms. Allocated memory was 229.6 MB in the beginning and 639.6 MB in the end (delta: 410.0 MB). Free memory was 193.4 MB in the beginning and 196.4 MB in the end (delta: -3.0 MB). Peak memory consumption was 407.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 869]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L615] int waterLevel = 1; [L616] int methaneLevelCritical = 0; [L712] int pumpRunning = 0; [L713] int systemActive = 1; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L546] int splverifierCounter ; [L547] int tmp ; [L548] int tmp___0 ; [L549] int tmp___1 ; [L550] int tmp___2 ; [L553] splverifierCounter = 0 [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND TRUE \read(tmp) [L567] CALL waterRise() [L633] COND TRUE waterLevel < 2 [L634] waterLevel = waterLevel + 1 [L567] RET waterRise() [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND FALSE !(\read(pumpRunning)) [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND TRUE ! pumpRunning [L754] CALL, EXPR isHighWaterLevel() [L846] int retValue_acc ; [L847] int tmp ; [L848] int tmp___0 ; [L852] CALL, EXPR isHighWaterSensorDry() [L695] int retValue_acc ; [L698] COND FALSE !(waterLevel < 2) [L702] retValue_acc = 0 [L703] return (retValue_acc); [L852] RET, EXPR isHighWaterSensorDry() [L852] tmp = isHighWaterSensorDry() [L854] COND FALSE !(\read(tmp)) [L857] tmp___0 = 1 [L859] retValue_acc = tmp___0 [L860] return (retValue_acc); [L754] RET, EXPR isHighWaterLevel() [L754] tmp = isHighWaterLevel() [L756] COND TRUE \read(tmp) [L758] CALL activatePump() [L777] pumpRunning = 1 [L758] RET activatePump() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND TRUE tmp == 0 [L884] CALL, EXPR isPumpRunning() [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); [L884] RET, EXPR isPumpRunning() [L884] tmp___0 = isPumpRunning() [L886] COND TRUE \read(tmp___0) [L888] CALL __automaton_fail() [L869] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.1s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 25.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 804 SDtfs, 1767 SDslu, 1087 SDs, 0 SdLazy, 5104 SolverSat, 1152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=393occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 337 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 763 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 203130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 66/76 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...