/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:22:23,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:22:23,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:22:23,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:22:23,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:22:23,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:22:23,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:22:23,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:22:23,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:22:23,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:22:23,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:22:23,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:22:23,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:22:23,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:22:23,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:22:23,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:22:23,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:22:23,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:22:23,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:22:23,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:22:23,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:22:23,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:22:23,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:22:23,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:22:23,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 16:22:23,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 16:22:23,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 16:22:23,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 16:22:23,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 16:22:23,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 16:22:23,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 16:22:23,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 16:22:23,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 16:22:23,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 16:22:23,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 16:22:23,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 16:22:23,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 16:22:23,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 16:22:23,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:22:23,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:22:23,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:22:23,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 16:22:23,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:22:23,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:22:23,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:22:23,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:22:23,304 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:22:23,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:22:23,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:22:23,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:22:23,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:22:23,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:22:23,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:22:23,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:22:23,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:22:23,305 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:22:23,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:22:23,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:22:23,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:22:23,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:22:23,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:22:23,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:22:23,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:22:23,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:22:23,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:22:23,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:22:23,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:22:23,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:22:23,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:23,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:22:23,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:22:23,310 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 16:22:23,599 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:22:23,616 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:22:23,620 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:22:23,622 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:22:23,622 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:22:23,623 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-07-20 16:22:23,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7185e2e3/3f842a5b07764541921cd55c1a480bb0/FLAG38b11f77e [2020-07-20 16:22:24,183 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:22:24,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-07-20 16:22:24,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7185e2e3/3f842a5b07764541921cd55c1a480bb0/FLAG38b11f77e [2020-07-20 16:22:24,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7185e2e3/3f842a5b07764541921cd55c1a480bb0 [2020-07-20 16:22:24,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:22:24,495 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:22:24,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:22:24,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:22:24,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:22:24,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:22:24" (1/1) ... [2020-07-20 16:22:24,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709f8423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:24, skipping insertion in model container [2020-07-20 16:22:24,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:22:24" (1/1) ... [2020-07-20 16:22:24,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:22:24,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:22:24,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:22:24,926 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:22:25,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:22:25,129 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:22:25,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:25 WrapperNode [2020-07-20 16:22:25,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:22:25,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:22:25,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:22:25,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:22:25,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:25" (1/1) ... [2020-07-20 16:22:25,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:25" (1/1) ... [2020-07-20 16:22:25,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:25" (1/1) ... [2020-07-20 16:22:25,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:25" (1/1) ... [2020-07-20 16:22:25,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:25" (1/1) ... [2020-07-20 16:22:25,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:25" (1/1) ... [2020-07-20 16:22:25,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:25" (1/1) ... [2020-07-20 16:22:25,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:22:25,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:22:25,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:22:25,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:22:25,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 16:22:25,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:22:25,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:22:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 16:22:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 16:22:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 16:22:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 16:22:25,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 16:22:25,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 16:22:25,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 16:22:25,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 16:22:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 16:22:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 16:22:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 16:22:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 16:22:25,301 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-20 16:22:25,301 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 16:22:25,302 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 16:22:25,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 16:22:25,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 16:22:25,302 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 16:22:25,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 16:22:25,302 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-20 16:22:25,302 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 16:22:25,303 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 16:22:25,303 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 16:22:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 16:22:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 16:22:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 16:22:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 16:22:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 16:22:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 16:22:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 16:22:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 16:22:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 16:22:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 16:22:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 16:22:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 16:22:25,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 16:22:25,306 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 16:22:25,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:22:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:22:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 16:22:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 16:22:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 16:22:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 16:22:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 16:22:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 16:22:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 16:22:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 16:22:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 16:22:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:22:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 16:22:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 16:22:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:22:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 16:22:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 16:22:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:22:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 16:22:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 16:22:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:22:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 16:22:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 16:22:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 16:22:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 16:22:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-20 16:22:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 16:22:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 16:22:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 16:22:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 16:22:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 16:22:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 16:22:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 16:22:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 16:22:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 16:22:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 16:22:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 16:22:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 16:22:25,314 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 16:22:25,314 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 16:22:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 16:22:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-20 16:22:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 16:22:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 16:22:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 16:22:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 16:22:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 16:22:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 16:22:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 16:22:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 16:22:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 16:22:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:22:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:22:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 16:22:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:22:26,309 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:22:26,310 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 16:22:26,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:22:26 BoogieIcfgContainer [2020-07-20 16:22:26,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:22:26,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:22:26,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:22:26,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:22:26,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:22:24" (1/3) ... [2020-07-20 16:22:26,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dbd73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:22:26, skipping insertion in model container [2020-07-20 16:22:26,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:25" (2/3) ... [2020-07-20 16:22:26,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dbd73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:22:26, skipping insertion in model container [2020-07-20 16:22:26,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:22:26" (3/3) ... [2020-07-20 16:22:26,322 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-07-20 16:22:26,332 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:22:26,340 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:22:26,353 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:22:26,375 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:22:26,375 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:22:26,375 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:22:26,375 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:22:26,376 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:22:26,376 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:22:26,376 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:22:26,376 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:22:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-07-20 16:22:26,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 16:22:26,407 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:26,408 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] [2020-07-20 16:22:26,409 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:26,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:26,415 INFO L82 PathProgramCache]: Analyzing trace with hash -325582978, now seen corresponding path program 1 times [2020-07-20 16:22:26,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:26,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063210988] [2020-07-20 16:22:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:26,861 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:26,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:26,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:22:26,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:26,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:26,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063210988] [2020-07-20 16:22:26,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:26,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:22:26,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660952924] [2020-07-20 16:22:26,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:22:26,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:26,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:22:26,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:22:26,929 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 2 states. [2020-07-20 16:22:26,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:26,979 INFO L93 Difference]: Finished difference Result 260 states and 319 transitions. [2020-07-20 16:22:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:22:26,980 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 16:22:26,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:27,001 INFO L225 Difference]: With dead ends: 260 [2020-07-20 16:22:27,002 INFO L226 Difference]: Without dead ends: 130 [2020-07-20 16:22:27,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:22:27,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-20 16:22:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-07-20 16:22:27,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-07-20 16:22:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-07-20 16:22:27,062 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-07-20 16:22:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:27,062 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-07-20 16:22:27,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:22:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-07-20 16:22:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 16:22:27,066 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:27,066 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] [2020-07-20 16:22:27,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:27,281 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:27,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:27,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1889235753, now seen corresponding path program 1 times [2020-07-20 16:22:27,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:27,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230689162] [2020-07-20 16:22:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:27,668 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:27,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:27,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 16:22:27,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:27,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:27,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230689162] [2020-07-20 16:22:27,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:27,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:27,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264319955] [2020-07-20 16:22:27,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:27,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:27,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:27,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:27,720 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 3 states. [2020-07-20 16:22:27,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:27,740 INFO L93 Difference]: Finished difference Result 196 states and 227 transitions. [2020-07-20 16:22:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:27,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 16:22:27,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:27,745 INFO L225 Difference]: With dead ends: 196 [2020-07-20 16:22:27,745 INFO L226 Difference]: Without dead ends: 121 [2020-07-20 16:22:27,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-20 16:22:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-07-20 16:22:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-20 16:22:27,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-07-20 16:22:27,763 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-07-20 16:22:27,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:27,763 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-07-20 16:22:27,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:27,763 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-07-20 16:22:27,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 16:22:27,765 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:27,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:27,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:27,979 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:27,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:27,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1400660330, now seen corresponding path program 1 times [2020-07-20 16:22:27,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:27,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949596547] [2020-07-20 16:22:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:28,338 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:28,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:28,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 16:22:28,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:28,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:28,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949596547] [2020-07-20 16:22:28,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:28,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:28,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142961432] [2020-07-20 16:22:28,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:28,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:28,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:28,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:28,376 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 3 states. [2020-07-20 16:22:28,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:28,429 INFO L93 Difference]: Finished difference Result 311 states and 368 transitions. [2020-07-20 16:22:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:28,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 16:22:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:28,435 INFO L225 Difference]: With dead ends: 311 [2020-07-20 16:22:28,435 INFO L226 Difference]: Without dead ends: 214 [2020-07-20 16:22:28,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-20 16:22:28,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2020-07-20 16:22:28,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-07-20 16:22:28,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 237 transitions. [2020-07-20 16:22:28,490 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 237 transitions. Word has length 52 [2020-07-20 16:22:28,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:28,491 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 237 transitions. [2020-07-20 16:22:28,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:28,491 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 237 transitions. [2020-07-20 16:22:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 16:22:28,497 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:28,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:28,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:28,716 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:28,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:28,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1567525845, now seen corresponding path program 1 times [2020-07-20 16:22:28,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:28,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791003605] [2020-07-20 16:22:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:29,091 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:29,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:29,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 16:22:29,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:29,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:29,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791003605] [2020-07-20 16:22:29,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:29,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:29,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290073322] [2020-07-20 16:22:29,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:29,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:29,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:29,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:29,164 INFO L87 Difference]: Start difference. First operand 202 states and 237 transitions. Second operand 6 states. [2020-07-20 16:22:29,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:29,400 INFO L93 Difference]: Finished difference Result 547 states and 659 transitions. [2020-07-20 16:22:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:29,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-20 16:22:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:29,409 INFO L225 Difference]: With dead ends: 547 [2020-07-20 16:22:29,409 INFO L226 Difference]: Without dead ends: 369 [2020-07-20 16:22:29,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:22:29,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-07-20 16:22:29,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 365. [2020-07-20 16:22:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-07-20 16:22:29,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 432 transitions. [2020-07-20 16:22:29,455 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 432 transitions. Word has length 57 [2020-07-20 16:22:29,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:29,455 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 432 transitions. [2020-07-20 16:22:29,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:29,456 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 432 transitions. [2020-07-20 16:22:29,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-20 16:22:29,458 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:29,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:29,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:29,668 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:29,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:29,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1743298223, now seen corresponding path program 1 times [2020-07-20 16:22:29,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:29,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302611951] [2020-07-20 16:22:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:30,026 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:30,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:30,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:22:30,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:30,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:30,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302611951] [2020-07-20 16:22:30,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:30,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:30,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171132946] [2020-07-20 16:22:30,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:30,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:30,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:30,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:30,071 INFO L87 Difference]: Start difference. First operand 365 states and 432 transitions. Second operand 6 states. [2020-07-20 16:22:30,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:30,380 INFO L93 Difference]: Finished difference Result 902 states and 1104 transitions. [2020-07-20 16:22:30,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:30,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-07-20 16:22:30,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:30,391 INFO L225 Difference]: With dead ends: 902 [2020-07-20 16:22:30,391 INFO L226 Difference]: Without dead ends: 561 [2020-07-20 16:22:30,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:22:30,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-07-20 16:22:30,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 553. [2020-07-20 16:22:30,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-07-20 16:22:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 662 transitions. [2020-07-20 16:22:30,448 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 662 transitions. Word has length 61 [2020-07-20 16:22:30,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:30,451 INFO L479 AbstractCegarLoop]: Abstraction has 553 states and 662 transitions. [2020-07-20 16:22:30,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:30,451 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 662 transitions. [2020-07-20 16:22:30,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-20 16:22:30,456 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:30,456 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:30,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:30,661 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:30,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:30,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1614775342, now seen corresponding path program 1 times [2020-07-20 16:22:30,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:30,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248118352] [2020-07-20 16:22:30,663 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:30,802 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 16:22:30,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:30,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 16:22:30,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:30,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 16:22:30,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:30,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248118352] [2020-07-20 16:22:30,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:30,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 16:22:30,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443858333] [2020-07-20 16:22:30,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 16:22:30,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:30,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 16:22:30,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:30,836 INFO L87 Difference]: Start difference. First operand 553 states and 662 transitions. Second operand 5 states. [2020-07-20 16:22:30,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:30,869 INFO L93 Difference]: Finished difference Result 1110 states and 1368 transitions. [2020-07-20 16:22:30,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 16:22:30,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-07-20 16:22:30,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:30,874 INFO L225 Difference]: With dead ends: 1110 [2020-07-20 16:22:30,874 INFO L226 Difference]: Without dead ends: 581 [2020-07-20 16:22:30,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:30,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-07-20 16:22:30,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 569. [2020-07-20 16:22:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-07-20 16:22:30,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 678 transitions. [2020-07-20 16:22:30,908 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 678 transitions. Word has length 94 [2020-07-20 16:22:30,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:30,908 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 678 transitions. [2020-07-20 16:22:30,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 16:22:30,909 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 678 transitions. [2020-07-20 16:22:30,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-20 16:22:30,911 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:30,912 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:31,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:31,125 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:31,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:31,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1782798676, now seen corresponding path program 1 times [2020-07-20 16:22:31,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:31,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376882863] [2020-07-20 16:22:31,128 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:31,482 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:31,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:31,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 16:22:31,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 16:22:31,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:31,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376882863] [2020-07-20 16:22:31,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:31,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:31,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052195516] [2020-07-20 16:22:31,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:31,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:31,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:31,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:31,550 INFO L87 Difference]: Start difference. First operand 569 states and 678 transitions. Second operand 3 states. [2020-07-20 16:22:31,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:31,608 INFO L93 Difference]: Finished difference Result 1611 states and 2042 transitions. [2020-07-20 16:22:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:31,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-07-20 16:22:31,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:31,616 INFO L225 Difference]: With dead ends: 1611 [2020-07-20 16:22:31,616 INFO L226 Difference]: Without dead ends: 1066 [2020-07-20 16:22:31,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:31,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-07-20 16:22:31,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1063. [2020-07-20 16:22:31,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-07-20 16:22:31,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1318 transitions. [2020-07-20 16:22:31,677 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1318 transitions. Word has length 94 [2020-07-20 16:22:31,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:31,678 INFO L479 AbstractCegarLoop]: Abstraction has 1063 states and 1318 transitions. [2020-07-20 16:22:31,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:31,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1318 transitions. [2020-07-20 16:22:31,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-07-20 16:22:31,682 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:31,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:31,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:31,899 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:31,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:31,899 INFO L82 PathProgramCache]: Analyzing trace with hash 273916843, now seen corresponding path program 1 times [2020-07-20 16:22:31,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:31,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681431215] [2020-07-20 16:22:31,901 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:32,229 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:32,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:32,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 16:22:32,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:32,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 16:22:32,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:32,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681431215] [2020-07-20 16:22:32,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:32,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:32,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100872659] [2020-07-20 16:22:32,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:32,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:32,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:32,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:32,289 INFO L87 Difference]: Start difference. First operand 1063 states and 1318 transitions. Second operand 6 states. [2020-07-20 16:22:33,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:33,245 INFO L93 Difference]: Finished difference Result 3536 states and 4758 transitions. [2020-07-20 16:22:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 16:22:33,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-07-20 16:22:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:33,263 INFO L225 Difference]: With dead ends: 3536 [2020-07-20 16:22:33,264 INFO L226 Difference]: Without dead ends: 2497 [2020-07-20 16:22:33,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 16:22:33,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2020-07-20 16:22:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2283. [2020-07-20 16:22:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2283 states. [2020-07-20 16:22:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 2948 transitions. [2020-07-20 16:22:33,407 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 2948 transitions. Word has length 98 [2020-07-20 16:22:33,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:33,407 INFO L479 AbstractCegarLoop]: Abstraction has 2283 states and 2948 transitions. [2020-07-20 16:22:33,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:33,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 2948 transitions. [2020-07-20 16:22:33,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-20 16:22:33,410 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:33,410 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:33,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:33,624 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:33,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:33,625 INFO L82 PathProgramCache]: Analyzing trace with hash 709252497, now seen corresponding path program 1 times [2020-07-20 16:22:33,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:33,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033346536] [2020-07-20 16:22:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:34,017 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:34,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:34,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:22:34,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 16:22:34,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:34,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033346536] [2020-07-20 16:22:34,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:34,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:34,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884024797] [2020-07-20 16:22:34,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:34,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:34,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:34,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:34,084 INFO L87 Difference]: Start difference. First operand 2283 states and 2948 transitions. Second operand 6 states. [2020-07-20 16:22:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:34,208 INFO L93 Difference]: Finished difference Result 4606 states and 6160 transitions. [2020-07-20 16:22:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 16:22:34,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-07-20 16:22:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:34,225 INFO L225 Difference]: With dead ends: 4606 [2020-07-20 16:22:34,225 INFO L226 Difference]: Without dead ends: 2347 [2020-07-20 16:22:34,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 16:22:34,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-07-20 16:22:34,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2323. [2020-07-20 16:22:34,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2020-07-20 16:22:34,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 2996 transitions. [2020-07-20 16:22:34,400 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 2996 transitions. Word has length 94 [2020-07-20 16:22:34,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:34,402 INFO L479 AbstractCegarLoop]: Abstraction has 2323 states and 2996 transitions. [2020-07-20 16:22:34,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:34,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 2996 transitions. [2020-07-20 16:22:34,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-20 16:22:34,408 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:34,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:34,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:34,622 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:34,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:34,622 INFO L82 PathProgramCache]: Analyzing trace with hash -188140781, now seen corresponding path program 1 times [2020-07-20 16:22:34,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:34,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504074825] [2020-07-20 16:22:34,623 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:34,759 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 16:22:34,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:34,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 16:22:34,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 16:22:34,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:34,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504074825] [2020-07-20 16:22:34,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:34,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 16:22:34,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940898068] [2020-07-20 16:22:34,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 16:22:34,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:34,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 16:22:34,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:34,792 INFO L87 Difference]: Start difference. First operand 2323 states and 2996 transitions. Second operand 5 states. [2020-07-20 16:22:34,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:34,870 INFO L93 Difference]: Finished difference Result 4262 states and 5640 transitions. [2020-07-20 16:22:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 16:22:34,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-07-20 16:22:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:34,883 INFO L225 Difference]: With dead ends: 4262 [2020-07-20 16:22:34,883 INFO L226 Difference]: Without dead ends: 1963 [2020-07-20 16:22:34,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:34,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2020-07-20 16:22:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1963. [2020-07-20 16:22:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1963 states. [2020-07-20 16:22:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2492 transitions. [2020-07-20 16:22:35,041 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2492 transitions. Word has length 94 [2020-07-20 16:22:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:35,042 INFO L479 AbstractCegarLoop]: Abstraction has 1963 states and 2492 transitions. [2020-07-20 16:22:35,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 16:22:35,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2492 transitions. [2020-07-20 16:22:35,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-07-20 16:22:35,045 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:35,045 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:35,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:35,260 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:35,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:35,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1347463022, now seen corresponding path program 1 times [2020-07-20 16:22:35,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:35,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759186808] [2020-07-20 16:22:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:35,594 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:35,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:35,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 16:22:35,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:35,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:35,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759186808] [2020-07-20 16:22:35,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:35,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 16:22:35,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260947948] [2020-07-20 16:22:35,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 16:22:35,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:35,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 16:22:35,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:22:35,669 INFO L87 Difference]: Start difference. First operand 1963 states and 2492 transitions. Second operand 8 states. [2020-07-20 16:22:36,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:36,211 INFO L93 Difference]: Finished difference Result 3832 states and 4888 transitions. [2020-07-20 16:22:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 16:22:36,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-07-20 16:22:36,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:36,223 INFO L225 Difference]: With dead ends: 3832 [2020-07-20 16:22:36,223 INFO L226 Difference]: Without dead ends: 1893 [2020-07-20 16:22:36,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:22:36,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2020-07-20 16:22:36,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1893. [2020-07-20 16:22:36,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-07-20 16:22:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2354 transitions. [2020-07-20 16:22:36,317 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2354 transitions. Word has length 98 [2020-07-20 16:22:36,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:36,318 INFO L479 AbstractCegarLoop]: Abstraction has 1893 states and 2354 transitions. [2020-07-20 16:22:36,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 16:22:36,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2354 transitions. [2020-07-20 16:22:36,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-20 16:22:36,322 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:36,323 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:36,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:36,537 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:36,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:36,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1051353802, now seen corresponding path program 1 times [2020-07-20 16:22:36,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:36,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378423464] [2020-07-20 16:22:36,539 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:37,154 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:37,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:37,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 16:22:37,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-20 16:22:37,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:37,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378423464] [2020-07-20 16:22:37,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:37,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:37,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40169025] [2020-07-20 16:22:37,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:37,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:37,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:37,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:37,184 INFO L87 Difference]: Start difference. First operand 1893 states and 2354 transitions. Second operand 3 states. [2020-07-20 16:22:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:37,319 INFO L93 Difference]: Finished difference Result 3247 states and 4023 transitions. [2020-07-20 16:22:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:37,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2020-07-20 16:22:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:37,327 INFO L225 Difference]: With dead ends: 3247 [2020-07-20 16:22:37,327 INFO L226 Difference]: Without dead ends: 1378 [2020-07-20 16:22:37,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:37,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2020-07-20 16:22:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1336. [2020-07-20 16:22:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-07-20 16:22:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1608 transitions. [2020-07-20 16:22:37,393 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1608 transitions. Word has length 131 [2020-07-20 16:22:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:37,394 INFO L479 AbstractCegarLoop]: Abstraction has 1336 states and 1608 transitions. [2020-07-20 16:22:37,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:37,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1608 transitions. [2020-07-20 16:22:37,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-20 16:22:37,397 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:37,397 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:37,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:37,612 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:37,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:37,613 INFO L82 PathProgramCache]: Analyzing trace with hash 555633972, now seen corresponding path program 1 times [2020-07-20 16:22:37,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:37,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102119886] [2020-07-20 16:22:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:38,081 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:38,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:22:38,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:22:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:22:38,165 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:22:38,434 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:22:38,434 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:22:38,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:38,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:22:38 BoogieIcfgContainer [2020-07-20 16:22:38,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:22:38,846 INFO L168 Benchmark]: Toolchain (without parser) took 14352.53 ms. Allocated memory was 137.9 MB in the beginning and 363.9 MB in the end (delta: 226.0 MB). Free memory was 101.8 MB in the beginning and 77.5 MB in the end (delta: 24.3 MB). Peak memory consumption was 250.3 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:38,847 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 16:22:38,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.68 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 101.4 MB in the beginning and 172.2 MB in the end (delta: -70.8 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:38,848 INFO L168 Benchmark]: Boogie Preprocessor took 84.82 ms. Allocated memory is still 202.9 MB. Free memory was 172.2 MB in the beginning and 168.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:38,849 INFO L168 Benchmark]: RCFGBuilder took 1098.97 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 168.0 MB in the beginning and 198.5 MB in the end (delta: -30.5 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:38,850 INFO L168 Benchmark]: TraceAbstraction took 12528.08 ms. Allocated memory was 234.9 MB in the beginning and 363.9 MB in the end (delta: 129.0 MB). Free memory was 198.5 MB in the beginning and 77.5 MB in the end (delta: 121.0 MB). Peak memory consumption was 249.9 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:38,853 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 634.68 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 101.4 MB in the beginning and 172.2 MB in the end (delta: -70.8 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.82 ms. Allocated memory is still 202.9 MB. Free memory was 172.2 MB in the beginning and 168.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1098.97 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 168.0 MB in the beginning and 198.5 MB in the end (delta: -30.5 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12528.08 ms. Allocated memory was 234.9 MB in the beginning and 363.9 MB in the end (delta: 129.0 MB). Free memory was 198.5 MB in the beginning and 77.5 MB in the end (delta: 121.0 MB). Peak memory consumption was 249.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L498] int pumpRunning = 0; [L499] int systemActive = 1; [L693] int waterLevel = 1; [L694] int methaneLevelCritical = 0; [L851] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=64, \old(head)=24, \old(head)=94, \old(methaneLevelCritical)=54, \old(pumpRunning)=40, \old(systemActive)=26, \old(waterLevel)=95, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L924] int retValue_acc ; [L925] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L929] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L930] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L931] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L842] int retValue_acc ; [L845] retValue_acc = 1 [L846] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L931] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L931] tmp = valid_product() [L933] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L935] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L936] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L918] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L422] int splverifierCounter ; [L423] int tmp ; [L424] int tmp___0 ; [L425] int tmp___1 ; [L426] int tmp___2 ; [L429] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L431] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L433] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L439] tmp = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L443] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L711] COND TRUE waterLevel < 2 [L712] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L443] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L478] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L506] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L513] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L515] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L535] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L538] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L540] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L650] int retValue_acc ; [L651] int tmp ; [L652] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L656] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L773] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L776] COND FALSE !(waterLevel < 2) [L780] retValue_acc = 0 [L781] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L656] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L656] tmp = isHighWaterSensorDry() [L658] COND FALSE !(\read(tmp)) [L661] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L663] retValue_acc = tmp___0 [L664] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L540] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L540] tmp = isHighWaterLevel() [L542] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L544] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L569] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L573] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L594] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L598] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L598] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L598] retValue_acc = isMethaneLevelCritical() [L600] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L573] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L573] tmp = isMethaneAlarm() [L575] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L579] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L563] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L579] RET activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L544] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L515] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L521] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L788] int tmp ; [L789] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L793] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L793] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L793] tmp = isMethaneLevelCritical() [L795] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L521] RET __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L478] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L431] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L433] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L453] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L723] COND FALSE !(\read(methaneLevelCritical)) [L726] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L453] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L478] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L506] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L508] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L699] COND TRUE waterLevel > 0 [L700] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L508] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L513] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L515] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L535] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L538] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L553] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L515] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L521] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L788] int tmp ; [L789] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L793] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L793] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L793] tmp = isMethaneLevelCritical() [L795] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L797] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L605] int retValue_acc ; [L608] retValue_acc = pumpRunning [L609] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L797] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L797] tmp___0 = isPumpRunning() [L799] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L801] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L44] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.2s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1959 SDtfs, 844 SDslu, 3836 SDs, 0 SdLazy, 990 SolverSat, 212 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 962 GetRequests, 919 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2323occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 319 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 1100 NumberOfCodeBlocks, 840 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 954 ConstructedInterpolants, 0 QuantifiedInterpolants, 127886 SizeOfPredicates, 28 NumberOfNonLiveVariables, 7727 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 44/44 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...