/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 log-additional-information=true -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 0.1.25-177f698 [2020-08-21 13:59:13,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:59:13,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:59:13,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:59:13,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:59:13,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:59:13,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:59:13,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:59:13,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:59:13,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:59:13,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:59:13,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:59:13,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:59:13,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:59:13,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:59:13,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:59:13,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:59:13,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:59:13,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:59:13,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:59:13,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:59:13,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:59:13,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:59:13,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:59:13,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:59:13,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:59:13,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:59:13,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:59:13,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:59:13,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:59:13,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:59:13,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:59:13,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:59:13,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:59:13,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:59:13,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:59:13,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:59:13,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:59:13,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:59:13,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:59:13,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:59:13,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:59:13,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:59:13,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:59:13,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:59:13,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:59:13,262 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:59:13,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:59:13,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:59:13,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:59:13,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:59:13,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:59:13,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:59:13,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:59:13,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:59:13,265 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:59:13,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:59:13,265 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:59:13,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:59:13,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:59:13,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:59:13,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:59:13,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:59:13,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:59:13,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:59:13,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:59:13,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:59:13,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:59:13,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:59:13,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:59:13,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:59:13,268 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 -> log-additional-information=true; [2020-08-21 13:59:13,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:59:13,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:59:13,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:59:13,594 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:59:13,595 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:59:13,595 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-21 13:59:13,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0abb1995/9c75fc07c5964cc1b699704699466fc1/FLAGde61d9301 [2020-08-21 13:59:14,173 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:59:14,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-21 13:59:14,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0abb1995/9c75fc07c5964cc1b699704699466fc1/FLAGde61d9301 [2020-08-21 13:59:14,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0abb1995/9c75fc07c5964cc1b699704699466fc1 [2020-08-21 13:59:14,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:59:14,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:59:14,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:59:14,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:59:14,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:59:14,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:59:14" (1/1) ... [2020-08-21 13:59:14,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3211b4cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:14, skipping insertion in model container [2020-08-21 13:59:14,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:59:14" (1/1) ... [2020-08-21 13:59:14,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:59:14,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:59:15,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:59:15,091 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:59:15,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:59:15,225 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:59:15,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:15 WrapperNode [2020-08-21 13:59:15,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:59:15,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:59:15,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:59:15,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:59:15,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:15" (1/1) ... [2020-08-21 13:59:15,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:15" (1/1) ... [2020-08-21 13:59:15,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:15" (1/1) ... [2020-08-21 13:59:15,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:15" (1/1) ... [2020-08-21 13:59:15,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:15" (1/1) ... [2020-08-21 13:59:15,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:15" (1/1) ... [2020-08-21 13:59:15,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:15" (1/1) ... [2020-08-21 13:59:15,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:59:15,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:59:15,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:59:15,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:59:15,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:59:15,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:59:15,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:59:15,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:59:15,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:59:15,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:59:15,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:59:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:59:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:59:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:59:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:59:15,380 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:59:15,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:59:15,380 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:59:15,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:59:15,381 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:59:15,381 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:59:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:59:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:59:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:59:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:59:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:59:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:59:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:59:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:59:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:59:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:59:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:59:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:59:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:59:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:59:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:59:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:59:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:59:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:59:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:59:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:59:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 13:59:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:59:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:59:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:59:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:59:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:59:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:59:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:59:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:59:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:59:15,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:59:15,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:59:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:59:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:59:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:59:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:59:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:59:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:59:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:59:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:59:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:59:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:59:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:59:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:59:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:59:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:59:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:59:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:59:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:59:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:59:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:59:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:59:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:59:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:59:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:59:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:59:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:59:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:59:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:59:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:59:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:59:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:59:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:59:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 13:59:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:59:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:59:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:59:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:59:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:59:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:59:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:59:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:59:16,546 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:59:16,547 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:59:16,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:59:16 BoogieIcfgContainer [2020-08-21 13:59:16,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:59:16,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:59:16,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:59:16,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:59:16,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:59:14" (1/3) ... [2020-08-21 13:59:16,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f487ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:59:16, skipping insertion in model container [2020-08-21 13:59:16,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:15" (2/3) ... [2020-08-21 13:59:16,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f487ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:59:16, skipping insertion in model container [2020-08-21 13:59:16,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:59:16" (3/3) ... [2020-08-21 13:59:16,560 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-08-21 13:59:16,571 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:59:16,579 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:59:16,593 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:59:16,618 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:59:16,618 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:59:16,618 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:59:16,619 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:59:16,619 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:59:16,619 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:59:16,619 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:59:16,619 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:59:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-08-21 13:59:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 13:59:16,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:16,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:59:16,652 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:16,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:16,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1120421974, now seen corresponding path program 1 times [2020-08-21 13:59:16,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:16,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444962460] [2020-08-21 13:59:16,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:17,333 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:17,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:17,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:17,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:17,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:17,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:17,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:59:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:17,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:59:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:17,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444962460] [2020-08-21 13:59:17,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:17,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:59:17,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461651042] [2020-08-21 13:59:17,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:59:17,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:17,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:59:17,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:59:17,435 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-08-21 13:59:18,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:18,557 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-21 13:59:18,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:59:18,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 13:59:18,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:18,576 INFO L225 Difference]: With dead ends: 249 [2020-08-21 13:59:18,576 INFO L226 Difference]: Without dead ends: 135 [2020-08-21 13:59:18,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:59:18,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-21 13:59:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-21 13:59:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 13:59:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-21 13:59:18,690 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-08-21 13:59:18,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:18,691 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-21 13:59:18,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:59:18,691 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-21 13:59:18,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 13:59:18,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:18,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:59:18,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:59:18,695 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1195015831, now seen corresponding path program 1 times [2020-08-21 13:59:18,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:18,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690692823] [2020-08-21 13:59:18,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:18,991 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:18,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:19,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:19,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:19,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:19,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:19,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:59:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:19,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:59:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:19,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690692823] [2020-08-21 13:59:19,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:19,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:59:19,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600891163] [2020-08-21 13:59:19,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:59:19,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:19,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:59:19,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:59:19,038 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-21 13:59:19,470 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:20,036 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-21 13:59:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:59:20,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 13:59:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:20,039 INFO L225 Difference]: With dead ends: 182 [2020-08-21 13:59:20,039 INFO L226 Difference]: Without dead ends: 119 [2020-08-21 13:59:20,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:59:20,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-21 13:59:20,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-21 13:59:20,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-21 13:59:20,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-21 13:59:20,070 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-08-21 13:59:20,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:20,071 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-21 13:59:20,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:59:20,071 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-21 13:59:20,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 13:59:20,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:20,073 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] [2020-08-21 13:59:20,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:59:20,073 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:20,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:20,074 INFO L82 PathProgramCache]: Analyzing trace with hash -234309885, now seen corresponding path program 1 times [2020-08-21 13:59:20,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:20,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464688678] [2020-08-21 13:59:20,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:20,388 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:20,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:20,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:20,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:20,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:20,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:20,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:59:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:20,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:59:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:20,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464688678] [2020-08-21 13:59:20,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:20,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:59:20,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934319888] [2020-08-21 13:59:20,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:59:20,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:20,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:59:20,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:59:20,494 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-21 13:59:20,902 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:21,217 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:21,474 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:21,737 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:22,654 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-21 13:59:22,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:59:22,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 13:59:22,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:22,658 INFO L225 Difference]: With dead ends: 191 [2020-08-21 13:59:22,658 INFO L226 Difference]: Without dead ends: 119 [2020-08-21 13:59:22,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:59:22,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-21 13:59:22,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-21 13:59:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-21 13:59:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-21 13:59:22,702 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-08-21 13:59:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:22,702 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-21 13:59:22,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:59:22,703 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-21 13:59:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 13:59:22,705 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:22,705 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] [2020-08-21 13:59:22,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:59:22,705 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:22,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:22,706 INFO L82 PathProgramCache]: Analyzing trace with hash -962632878, now seen corresponding path program 1 times [2020-08-21 13:59:22,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:22,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339473073] [2020-08-21 13:59:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:22,986 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:22,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:23,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:23,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:23,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:23,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:23,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:59:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:23,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:23,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:59:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:23,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 13:59:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:23,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339473073] [2020-08-21 13:59:23,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:23,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:59:23,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728025917] [2020-08-21 13:59:23,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:59:23,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:23,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:59:23,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:59:23,059 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-08-21 13:59:23,401 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:24,539 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:24,965 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-08-21 13:59:24,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 13:59:24,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-21 13:59:24,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:24,970 INFO L225 Difference]: With dead ends: 274 [2020-08-21 13:59:24,971 INFO L226 Difference]: Without dead ends: 202 [2020-08-21 13:59:24,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:59:24,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-21 13:59:25,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-08-21 13:59:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-21 13:59:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-08-21 13:59:25,012 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-08-21 13:59:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:25,013 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-08-21 13:59:25,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:59:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-08-21 13:59:25,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-21 13:59:25,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:25,016 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] [2020-08-21 13:59:25,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:59:25,016 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:25,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:25,017 INFO L82 PathProgramCache]: Analyzing trace with hash 869233952, now seen corresponding path program 1 times [2020-08-21 13:59:25,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:25,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089709894] [2020-08-21 13:59:25,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:25,335 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:25,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:25,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:25,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:25,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:25,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:59:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:25,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:25,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:25,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:59:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:25,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 13:59:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:25,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 13:59:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:25,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089709894] [2020-08-21 13:59:25,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:25,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:59:25,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56125919] [2020-08-21 13:59:25,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:59:25,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:25,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:59:25,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:59:25,478 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 12 states. [2020-08-21 13:59:26,030 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:26,351 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:26,613 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:26,906 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:27,412 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:28,208 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:28,516 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:28,769 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:29,011 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:29,284 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:29,553 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:30,436 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:30,712 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:31,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:31,365 INFO L93 Difference]: Finished difference Result 568 states and 750 transitions. [2020-08-21 13:59:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 13:59:31,366 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-21 13:59:31,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:31,371 INFO L225 Difference]: With dead ends: 568 [2020-08-21 13:59:31,371 INFO L226 Difference]: Without dead ends: 431 [2020-08-21 13:59:31,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 13:59:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-08-21 13:59:31,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 373. [2020-08-21 13:59:31,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-21 13:59:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 443 transitions. [2020-08-21 13:59:31,459 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 443 transitions. Word has length 73 [2020-08-21 13:59:31,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:31,460 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 443 transitions. [2020-08-21 13:59:31,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:59:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 443 transitions. [2020-08-21 13:59:31,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 13:59:31,464 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:31,465 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] [2020-08-21 13:59:31,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:59:31,465 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:31,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:31,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1689893862, now seen corresponding path program 1 times [2020-08-21 13:59:31,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:31,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696826965] [2020-08-21 13:59:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,765 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:31,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:59:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:59:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:59:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 13:59:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:31,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 13:59:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 13:59:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:32,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 13:59:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:32,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 13:59:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:32,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 13:59:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 13:59:32,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696826965] [2020-08-21 13:59:32,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:59:32,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 13:59:32,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783803709] [2020-08-21 13:59:32,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:59:32,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:32,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:59:32,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:59:32,041 INFO L87 Difference]: Start difference. First operand 373 states and 443 transitions. Second operand 13 states. [2020-08-21 13:59:32,636 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:33,238 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:33,762 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:34,022 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 13:59:34,313 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:34,571 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:34,807 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:35,080 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 13:59:35,378 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:35,656 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:36,901 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:37,140 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:59:37,376 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:37,609 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:38,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:38,091 INFO L93 Difference]: Finished difference Result 778 states and 1000 transitions. [2020-08-21 13:59:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 13:59:38,092 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 117 [2020-08-21 13:59:38,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:38,097 INFO L225 Difference]: With dead ends: 778 [2020-08-21 13:59:38,098 INFO L226 Difference]: Without dead ends: 429 [2020-08-21 13:59:38,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 13:59:38,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-21 13:59:38,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 367. [2020-08-21 13:59:38,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-21 13:59:38,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 437 transitions. [2020-08-21 13:59:38,163 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 437 transitions. Word has length 117 [2020-08-21 13:59:38,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:38,164 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 437 transitions. [2020-08-21 13:59:38,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:59:38,164 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 437 transitions. [2020-08-21 13:59:38,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-21 13:59:38,166 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:38,166 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] [2020-08-21 13:59:38,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:59:38,166 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:38,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:38,167 INFO L82 PathProgramCache]: Analyzing trace with hash -2066212398, now seen corresponding path program 1 times [2020-08-21 13:59:38,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:38,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622872646] [2020-08-21 13:59:38,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,454 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:38,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:59:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:59:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 13:59:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 13:59:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 13:59:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 13:59:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 13:59:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 13:59:38,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622872646] [2020-08-21 13:59:38,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:59:38,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 13:59:38,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848670134] [2020-08-21 13:59:38,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:59:38,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:38,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:59:38,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:59:38,632 INFO L87 Difference]: Start difference. First operand 367 states and 437 transitions. Second operand 12 states. [2020-08-21 13:59:39,168 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:39,401 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:39,631 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:40,138 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:40,379 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:40,643 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:41,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:41,332 INFO L93 Difference]: Finished difference Result 663 states and 818 transitions. [2020-08-21 13:59:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:59:41,332 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-21 13:59:41,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:41,337 INFO L225 Difference]: With dead ends: 663 [2020-08-21 13:59:41,337 INFO L226 Difference]: Without dead ends: 320 [2020-08-21 13:59:41,339 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 [2020-08-21 13:59:41,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-21 13:59:41,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 296. [2020-08-21 13:59:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-21 13:59:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 350 transitions. [2020-08-21 13:59:41,395 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 350 transitions. Word has length 109 [2020-08-21 13:59:41,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:41,395 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 350 transitions. [2020-08-21 13:59:41,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:59:41,396 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 350 transitions. [2020-08-21 13:59:41,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 13:59:41,398 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:41,398 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] [2020-08-21 13:59:41,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:59:41,398 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:41,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:41,399 INFO L82 PathProgramCache]: Analyzing trace with hash 147640793, now seen corresponding path program 1 times [2020-08-21 13:59:41,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:41,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353415084] [2020-08-21 13:59:41,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,727 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:41,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:59:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:59:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:59:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 13:59:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 13:59:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 13:59:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 13:59:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 13:59:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:59:41,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353415084] [2020-08-21 13:59:41,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:59:41,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 13:59:41,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284348792] [2020-08-21 13:59:41,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:59:41,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:41,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:59:41,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:59:41,904 INFO L87 Difference]: Start difference. First operand 296 states and 350 transitions. Second operand 12 states. [2020-08-21 13:59:42,330 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:43,084 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:43,603 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:43,885 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:44,141 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:44,365 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:44,617 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:44,893 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:45,854 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:46,116 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:46,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:46,603 INFO L93 Difference]: Finished difference Result 687 states and 875 transitions. [2020-08-21 13:59:46,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 13:59:46,604 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-08-21 13:59:46,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:46,609 INFO L225 Difference]: With dead ends: 687 [2020-08-21 13:59:46,609 INFO L226 Difference]: Without dead ends: 469 [2020-08-21 13:59:46,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2020-08-21 13:59:46,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-21 13:59:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 393. [2020-08-21 13:59:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-08-21 13:59:46,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 472 transitions. [2020-08-21 13:59:46,689 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 472 transitions. Word has length 113 [2020-08-21 13:59:46,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:46,690 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 472 transitions. [2020-08-21 13:59:46,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:59:46,690 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 472 transitions. [2020-08-21 13:59:46,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 13:59:46,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:46,693 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] [2020-08-21 13:59:46,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:59:46,693 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:46,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:46,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1088865250, now seen corresponding path program 2 times [2020-08-21 13:59:46,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:46,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986786080] [2020-08-21 13:59:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:59:46,754 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:59:46,754 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:59:46,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:59:46,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:59:46 BoogieIcfgContainer [2020-08-21 13:59:46,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:59:46,790 INFO L168 Benchmark]: Toolchain (without parser) took 32228.65 ms. Allocated memory was 140.0 MB in the beginning and 618.1 MB in the end (delta: 478.2 MB). Free memory was 100.8 MB in the beginning and 122.2 MB in the end (delta: -21.5 MB). Peak memory consumption was 456.7 MB. Max. memory is 7.1 GB. [2020-08-21 13:59:46,791 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-21 13:59:46,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.83 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 172.2 MB in the end (delta: -71.5 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-08-21 13:59:46,796 INFO L168 Benchmark]: Boogie Preprocessor took 84.02 ms. Allocated memory is still 203.4 MB. Free memory was 172.2 MB in the beginning and 167.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-08-21 13:59:46,796 INFO L168 Benchmark]: RCFGBuilder took 1240.76 ms. Allocated memory was 203.4 MB in the beginning and 237.5 MB in the end (delta: 34.1 MB). Free memory was 167.4 MB in the beginning and 199.5 MB in the end (delta: -32.0 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:59:46,797 INFO L168 Benchmark]: TraceAbstraction took 30235.68 ms. Allocated memory was 237.5 MB in the beginning and 618.1 MB in the end (delta: 380.6 MB). Free memory was 199.5 MB in the beginning and 122.2 MB in the end (delta: 77.3 MB). Peak memory consumption was 457.9 MB. Max. memory is 7.1 GB. [2020-08-21 13:59:46,801 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 663.83 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 172.2 MB in the end (delta: -71.5 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.02 ms. Allocated memory is still 203.4 MB. Free memory was 172.2 MB in the beginning and 167.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1240.76 ms. Allocated memory was 203.4 MB in the beginning and 237.5 MB in the end (delta: 34.1 MB). Free memory was 167.4 MB in the beginning and 199.5 MB in the end (delta: -32.0 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30235.68 ms. Allocated memory was 237.5 MB in the beginning and 618.1 MB in the end (delta: 380.6 MB). Free memory was 199.5 MB in the beginning and 122.2 MB in the end (delta: 77.3 MB). Peak memory consumption was 457.9 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: 25.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 802 SDtfs, 1767 SDslu, 1080 SDs, 0 SdLazy, 5114 SolverSat, 1152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 14.1s 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: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 337 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s 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...