/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_FUNCTIONS --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_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:00:45,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:00:45,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:00:45,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:00:45,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:00:45,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:00:45,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:00:45,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:00:45,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:00:45,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:00:45,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:00:45,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:00:45,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:00:45,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:00:45,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:00:45,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:00:45,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:00:45,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:00:45,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:00:45,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:00:45,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:00:45,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:00:45,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:00:45,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:00:45,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:00:45,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:00:45,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:00:45,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:00:45,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:00:45,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:00:45,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:00:45,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:00:45,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:00:45,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:00:45,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:00:45,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:00:45,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:00:45,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:00:45,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:00:45,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:00:45,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:00:45,306 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 13:00:45,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:00:45,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:00:45,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:00:45,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:00:45,343 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:00:45,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:00:45,347 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:00:45,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:00:45,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:00:45,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:00:45,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:00:45,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:00:45,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:00:45,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:00:45,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:00:45,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:00:45,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:00:45,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:00:45,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:00:45,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:00:45,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:00:45,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:00:45,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:00:45,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:00:45,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:00:45,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:00:45,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:45,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:00:45,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:00:45,354 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_FUNCTIONS 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 13:00:45,635 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:00:45,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:00:45,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:00:45,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:00:45,652 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:00:45,653 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-07-20 13:00:45,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eaf30bad/222124cdf568427bba4a37b121c71202/FLAG28a9e5b59 [2020-07-20 13:00:46,297 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:00:46,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-07-20 13:00:46,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eaf30bad/222124cdf568427bba4a37b121c71202/FLAG28a9e5b59 [2020-07-20 13:00:46,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eaf30bad/222124cdf568427bba4a37b121c71202 [2020-07-20 13:00:46,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:00:46,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:00:46,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:00:46,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:00:46,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:00:46,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:00:46" (1/1) ... [2020-07-20 13:00:46,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57cfa06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:46, skipping insertion in model container [2020-07-20 13:00:46,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:00:46" (1/1) ... [2020-07-20 13:00:46,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:00:46,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:00:47,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:00:47,116 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:00:47,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:00:47,221 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:00:47,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47 WrapperNode [2020-07-20 13:00:47,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:00:47,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:00:47,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:00:47,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:00:47,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:00:47,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:00:47,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:00:47,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:00:47,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (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 13:00:47,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:00:47,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:00:47,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 13:00:47,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 13:00:47,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 13:00:47,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 13:00:47,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 13:00:47,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 13:00:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 13:00:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 13:00:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 13:00:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 13:00:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 13:00:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 13:00:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 13:00:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 13:00:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 13:00:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 13:00:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 13:00:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 13:00:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 13:00:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 13:00:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 13:00:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 13:00:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 13:00:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 13:00:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 13:00:47,383 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 13:00:47,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 13:00:47,383 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-20 13:00:47,383 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 13:00:47,383 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 13:00:47,383 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 13:00:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 13:00:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 13:00:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 13:00:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 13:00:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 13:00:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:00:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:00:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:00:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 13:00:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 13:00:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 13:00:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 13:00:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 13:00:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 13:00:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 13:00:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:00:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 13:00:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 13:00:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:00:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 13:00:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 13:00:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:00:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 13:00:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 13:00:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:00:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 13:00:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 13:00:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 13:00:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 13:00:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 13:00:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 13:00:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 13:00:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 13:00:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 13:00:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 13:00:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 13:00:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-20 13:00:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 13:00:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 13:00:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 13:00:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 13:00:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 13:00:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 13:00:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 13:00:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 13:00:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 13:00:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 13:00:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 13:00:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 13:00:47,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 13:00:47,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 13:00:47,391 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 13:00:47,391 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 13:00:47,391 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 13:00:47,391 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 13:00:47,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:00:47,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:00:47,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 13:00:47,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:00:48,399 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:00:48,399 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 13:00:48,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:00:48 BoogieIcfgContainer [2020-07-20 13:00:48,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:00:48,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:00:48,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:00:48,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:00:48,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:00:46" (1/3) ... [2020-07-20 13:00:48,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c60b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:00:48, skipping insertion in model container [2020-07-20 13:00:48,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (2/3) ... [2020-07-20 13:00:48,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c60b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:00:48, skipping insertion in model container [2020-07-20 13:00:48,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:00:48" (3/3) ... [2020-07-20 13:00:48,413 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-07-20 13:00:48,424 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:00:48,431 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:00:48,441 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:00:48,468 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:00:48,468 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:00:48,468 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:00:48,468 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:00:48,469 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:00:48,469 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:00:48,469 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:00:48,469 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:00:48,493 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-07-20 13:00:48,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 13:00:48,503 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:48,504 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 13:00:48,505 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:48,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:48,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1081228888, now seen corresponding path program 1 times [2020-07-20 13:00:48,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:48,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423267712] [2020-07-20 13:00:48,520 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 13:00:48,975 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:00:48,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:48,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:00:48,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:49,022 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 13:00:49,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:49,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423267712] [2020-07-20 13:00:49,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:49,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:00:49,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862042112] [2020-07-20 13:00:49,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:00:49,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:49,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:00:49,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:00:49,055 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 2 states. [2020-07-20 13:00:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:49,121 INFO L93 Difference]: Finished difference Result 258 states and 323 transitions. [2020-07-20 13:00:49,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:00:49,124 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 13:00:49,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:49,145 INFO L225 Difference]: With dead ends: 258 [2020-07-20 13:00:49,145 INFO L226 Difference]: Without dead ends: 129 [2020-07-20 13:00:49,156 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 13:00:49,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-07-20 13:00:49,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-07-20 13:00:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-07-20 13:00:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2020-07-20 13:00:49,263 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 46 [2020-07-20 13:00:49,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:49,264 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2020-07-20 13:00:49,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:00:49,265 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2020-07-20 13:00:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 13:00:49,275 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:49,275 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 13:00:49,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:49,487 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:49,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:49,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1618039840, now seen corresponding path program 1 times [2020-07-20 13:00:49,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:49,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234782121] [2020-07-20 13:00:49,490 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 13:00:49,929 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:00:49,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:49,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 13:00:49,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:49,974 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 13:00:49,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:49,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234782121] [2020-07-20 13:00:49,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:49,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:00:49,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420356949] [2020-07-20 13:00:49,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:00:49,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:49,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:00:49,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:00:49,979 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand 3 states. [2020-07-20 13:00:50,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:50,001 INFO L93 Difference]: Finished difference Result 201 states and 237 transitions. [2020-07-20 13:00:50,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:00:50,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 13:00:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:50,004 INFO L225 Difference]: With dead ends: 201 [2020-07-20 13:00:50,004 INFO L226 Difference]: Without dead ends: 120 [2020-07-20 13:00:50,007 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 13:00:50,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-20 13:00:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-07-20 13:00:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-20 13:00:50,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2020-07-20 13:00:50,035 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 47 [2020-07-20 13:00:50,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:50,035 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2020-07-20 13:00:50,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:00:50,036 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2020-07-20 13:00:50,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 13:00:50,040 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:50,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:00:50,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:50,256 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:50,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:50,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1339561462, now seen corresponding path program 1 times [2020-07-20 13:00:50,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:50,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209333917] [2020-07-20 13:00:50,258 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 13:00:50,687 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:00:50,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:50,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 13:00:50,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:50,723 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 13:00:50,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:50,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209333917] [2020-07-20 13:00:50,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:50,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:00:50,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923572193] [2020-07-20 13:00:50,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:00:50,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:50,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:00:50,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:00:50,726 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand 3 states. [2020-07-20 13:00:50,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:50,753 INFO L93 Difference]: Finished difference Result 310 states and 375 transitions. [2020-07-20 13:00:50,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:00:50,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-20 13:00:50,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:50,757 INFO L225 Difference]: With dead ends: 310 [2020-07-20 13:00:50,757 INFO L226 Difference]: Without dead ends: 214 [2020-07-20 13:00:50,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 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 13:00:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-20 13:00:50,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 210. [2020-07-20 13:00:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-07-20 13:00:50,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 253 transitions. [2020-07-20 13:00:50,799 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 253 transitions. Word has length 51 [2020-07-20 13:00:50,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:50,800 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 253 transitions. [2020-07-20 13:00:50,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:00:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 253 transitions. [2020-07-20 13:00:50,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 13:00:50,805 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:50,806 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 13:00:51,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:51,021 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:51,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:51,022 INFO L82 PathProgramCache]: Analyzing trace with hash 857479477, now seen corresponding path program 1 times [2020-07-20 13:00:51,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:51,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702351771] [2020-07-20 13:00:51,023 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 13:00:51,449 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:00:51,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:51,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:00:51,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:51,503 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 13:00:51,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:51,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702351771] [2020-07-20 13:00:51,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:51,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:00:51,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416703980] [2020-07-20 13:00:51,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:00:51,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:51,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:00:51,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:00:51,506 INFO L87 Difference]: Start difference. First operand 210 states and 253 transitions. Second operand 6 states. [2020-07-20 13:00:51,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:51,753 INFO L93 Difference]: Finished difference Result 506 states and 639 transitions. [2020-07-20 13:00:51,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 13:00:51,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-20 13:00:51,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:51,758 INFO L225 Difference]: With dead ends: 506 [2020-07-20 13:00:51,758 INFO L226 Difference]: Without dead ends: 320 [2020-07-20 13:00:51,759 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 13:00:51,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-07-20 13:00:51,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 310. [2020-07-20 13:00:51,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-07-20 13:00:51,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 377 transitions. [2020-07-20 13:00:51,793 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 377 transitions. Word has length 57 [2020-07-20 13:00:51,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:51,793 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 377 transitions. [2020-07-20 13:00:51,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:00:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 377 transitions. [2020-07-20 13:00:51,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 13:00:51,795 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:51,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:00:52,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:52,011 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:52,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:52,012 INFO L82 PathProgramCache]: Analyzing trace with hash -2089178819, now seen corresponding path program 1 times [2020-07-20 13:00:52,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:52,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152206918] [2020-07-20 13:00:52,014 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 13:00:52,400 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:00:52,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:52,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 13:00:52,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:52,441 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 13:00:52,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:52,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152206918] [2020-07-20 13:00:52,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:52,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:00:52,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163248932] [2020-07-20 13:00:52,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:00:52,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:52,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:00:52,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:00:52,444 INFO L87 Difference]: Start difference. First operand 310 states and 377 transitions. Second operand 3 states. [2020-07-20 13:00:52,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:52,491 INFO L93 Difference]: Finished difference Result 874 states and 1145 transitions. [2020-07-20 13:00:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:00:52,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-07-20 13:00:52,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:52,497 INFO L225 Difference]: With dead ends: 874 [2020-07-20 13:00:52,498 INFO L226 Difference]: Without dead ends: 588 [2020-07-20 13:00:52,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 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 13:00:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-07-20 13:00:52,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 585. [2020-07-20 13:00:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-07-20 13:00:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 748 transitions. [2020-07-20 13:00:52,544 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 748 transitions. Word has length 79 [2020-07-20 13:00:52,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:52,545 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 748 transitions. [2020-07-20 13:00:52,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:00:52,545 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 748 transitions. [2020-07-20 13:00:52,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 13:00:52,548 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:52,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:00:52,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:52,763 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:52,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:52,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1180296478, now seen corresponding path program 1 times [2020-07-20 13:00:52,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:52,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871609821] [2020-07-20 13:00:52,766 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 13:00:53,149 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:00:53,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:53,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:00:53,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:53,190 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 13:00:53,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:53,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871609821] [2020-07-20 13:00:53,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:53,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:00:53,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046138478] [2020-07-20 13:00:53,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:00:53,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:53,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:00:53,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:00:53,193 INFO L87 Difference]: Start difference. First operand 585 states and 748 transitions. Second operand 6 states. [2020-07-20 13:00:53,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:53,241 INFO L93 Difference]: Finished difference Result 1166 states and 1534 transitions. [2020-07-20 13:00:53,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:00:53,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-20 13:00:53,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:53,246 INFO L225 Difference]: With dead ends: 1166 [2020-07-20 13:00:53,247 INFO L226 Difference]: Without dead ends: 605 [2020-07-20 13:00:53,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 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 13:00:53,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2020-07-20 13:00:53,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2020-07-20 13:00:53,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-07-20 13:00:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 770 transitions. [2020-07-20 13:00:53,286 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 770 transitions. Word has length 79 [2020-07-20 13:00:53,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:53,287 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 770 transitions. [2020-07-20 13:00:53,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:00:53,287 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 770 transitions. [2020-07-20 13:00:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 13:00:53,289 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:53,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:00:53,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:53,503 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:53,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:53,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1888461058, now seen corresponding path program 1 times [2020-07-20 13:00:53,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:53,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335514456] [2020-07-20 13:00:53,506 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 13:00:53,834 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:00:53,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:53,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 13:00:53,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:53,891 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 13:00:53,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:53,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335514456] [2020-07-20 13:00:53,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:53,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:00:53,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778354700] [2020-07-20 13:00:53,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:00:53,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:53,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:00:53,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:00:53,894 INFO L87 Difference]: Start difference. First operand 605 states and 770 transitions. Second operand 6 states. [2020-07-20 13:00:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:54,981 INFO L93 Difference]: Finished difference Result 2039 states and 2788 transitions. [2020-07-20 13:00:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 13:00:54,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-07-20 13:00:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:54,996 INFO L225 Difference]: With dead ends: 2039 [2020-07-20 13:00:54,999 INFO L226 Difference]: Without dead ends: 1458 [2020-07-20 13:00:55,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 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 13:00:55,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-07-20 13:00:55,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1338. [2020-07-20 13:00:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-07-20 13:00:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1766 transitions. [2020-07-20 13:00:55,117 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1766 transitions. Word has length 83 [2020-07-20 13:00:55,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:55,118 INFO L479 AbstractCegarLoop]: Abstraction has 1338 states and 1766 transitions. [2020-07-20 13:00:55,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:00:55,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1766 transitions. [2020-07-20 13:00:55,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 13:00:55,126 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:55,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:00:55,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:55,341 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:55,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:55,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1202928732, now seen corresponding path program 1 times [2020-07-20 13:00:55,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:55,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655162737] [2020-07-20 13:00:55,342 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 13:00:55,701 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:00:55,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:55,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 13:00:55,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:55,743 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 13:00:55,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:55,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655162737] [2020-07-20 13:00:55,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:55,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:00:55,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083215084] [2020-07-20 13:00:55,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:00:55,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:55,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:00:55,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:00:55,746 INFO L87 Difference]: Start difference. First operand 1338 states and 1766 transitions. Second operand 5 states. [2020-07-20 13:00:55,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:55,818 INFO L93 Difference]: Finished difference Result 2522 states and 3418 transitions. [2020-07-20 13:00:55,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 13:00:55,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-07-20 13:00:55,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:55,828 INFO L225 Difference]: With dead ends: 2522 [2020-07-20 13:00:55,828 INFO L226 Difference]: Without dead ends: 1208 [2020-07-20 13:00:55,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 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 13:00:55,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2020-07-20 13:00:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1208. [2020-07-20 13:00:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2020-07-20 13:00:55,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1560 transitions. [2020-07-20 13:00:55,911 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1560 transitions. Word has length 79 [2020-07-20 13:00:55,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:55,911 INFO L479 AbstractCegarLoop]: Abstraction has 1208 states and 1560 transitions. [2020-07-20 13:00:55,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:00:55,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1560 transitions. [2020-07-20 13:00:55,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 13:00:55,915 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:55,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:00:56,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:56,130 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:56,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:56,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1381014239, now seen corresponding path program 1 times [2020-07-20 13:00:56,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:56,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985394796] [2020-07-20 13:00:56,132 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 13:00:56,513 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:00:56,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:56,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 13:00:56,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:56,560 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 13:00:56,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:56,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985394796] [2020-07-20 13:00:56,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:56,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:00:56,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148048288] [2020-07-20 13:00:56,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:00:56,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:56,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:00:56,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:00:56,563 INFO L87 Difference]: Start difference. First operand 1208 states and 1560 transitions. Second operand 6 states. [2020-07-20 13:00:56,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:56,914 INFO L93 Difference]: Finished difference Result 3501 states and 4708 transitions. [2020-07-20 13:00:56,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 13:00:56,915 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-07-20 13:00:56,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:56,935 INFO L225 Difference]: With dead ends: 3501 [2020-07-20 13:00:56,936 INFO L226 Difference]: Without dead ends: 2317 [2020-07-20 13:00:56,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 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 13:00:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2020-07-20 13:00:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2281. [2020-07-20 13:00:57,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-07-20 13:00:57,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 2960 transitions. [2020-07-20 13:00:57,099 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 2960 transitions. Word has length 83 [2020-07-20 13:00:57,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:57,100 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 2960 transitions. [2020-07-20 13:00:57,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:00:57,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 2960 transitions. [2020-07-20 13:00:57,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-20 13:00:57,104 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:57,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:00:57,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:57,318 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:57,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:57,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1146127589, now seen corresponding path program 1 times [2020-07-20 13:00:57,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:57,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74711295] [2020-07-20 13:00:57,320 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 13:00:57,918 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:00:57,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:00:57,918 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:00:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:00:58,027 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:00:58,327 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:00:58,328 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:00:58,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:58,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:00:58 BoogieIcfgContainer [2020-07-20 13:00:58,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:00:58,736 INFO L168 Benchmark]: Toolchain (without parser) took 12133.03 ms. Allocated memory was 146.3 MB in the beginning and 337.6 MB in the end (delta: 191.4 MB). Free memory was 103.2 MB in the beginning and 232.5 MB in the end (delta: -129.3 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:00:58,738 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 13:00:58,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 617.40 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.8 MB in the beginning and 172.7 MB in the end (delta: -69.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-20 13:00:58,740 INFO L168 Benchmark]: Boogie Preprocessor took 87.20 ms. Allocated memory is still 203.9 MB. Free memory was 172.7 MB in the beginning and 168.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-20 13:00:58,741 INFO L168 Benchmark]: RCFGBuilder took 1095.42 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 168.3 MB in the beginning and 195.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-07-20 13:00:58,745 INFO L168 Benchmark]: TraceAbstraction took 10327.23 ms. Allocated memory was 235.9 MB in the beginning and 337.6 MB in the end (delta: 101.7 MB). Free memory was 195.4 MB in the beginning and 232.5 MB in the end (delta: -37.1 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. [2020-07-20 13:00:58,754 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 617.40 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.8 MB in the beginning and 172.7 MB in the end (delta: -69.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.20 ms. Allocated memory is still 203.9 MB. Free memory was 172.7 MB in the beginning and 168.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1095.42 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 168.3 MB in the beginning and 195.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10327.23 ms. Allocated memory was 235.9 MB in the beginning and 337.6 MB in the end (delta: 101.7 MB). Free memory was 195.4 MB in the beginning and 232.5 MB in the end (delta: -37.1 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L617] int pumpRunning = 0; [L618] int systemActive = 1; [L848] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=95, \old(head)=69, \old(head)=56, \old(methaneLevelCritical)=40, \old(pumpRunning)=88, \old(systemActive)=60, \old(waterLevel)=70, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L921] int retValue_acc ; [L922] 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] [L926] 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] [L927] 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] [L928] 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] [L839] int retValue_acc ; [L842] retValue_acc = 1 [L843] 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] [L928] 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] [L928] tmp = valid_product() [L930] 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] [L932] 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] [L933] 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] [L915] 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] [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] 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] [L557] 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] [L559] 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] [L565] tmp = __VERIFIER_nondet_int() [L567] 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] [L569] 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] [L468] COND TRUE waterLevel < 2 [L469] 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] [L569] 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] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] 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=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=-1, waterLevel=2] [L579] CALL changeMethaneLevel() 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] [L480] COND FALSE !(\read(methaneLevelCritical)) [L483] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L579] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=-1, waterLevel=2] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=-1, tmp___2=1, waterLevel=2] [L602] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L624] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L631] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L633] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L679] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L682] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L697] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L653] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L656] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L658] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L776] int retValue_acc ; [L777] int tmp ; [L778] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L782] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L530] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L782] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L782] tmp = isHighWaterSensorDry() [L784] COND FALSE !(\read(tmp)) [L787] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L789] retValue_acc = tmp___0 [L790] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L658] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L658] tmp = isHighWaterLevel() [L660] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L662] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L707] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L662] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L697] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L633] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L639] 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=1, pumpRunning=1, systemActive=1, waterLevel=2] [L410] int tmp ; [L411] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L415] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L415] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L415] tmp = isMethaneLevelCritical() [L417] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L419] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L731] int retValue_acc ; [L734] retValue_acc = pumpRunning [L735] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L419] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L419] tmp___0 = isPumpRunning() [L421] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L423] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L439] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1440 SDtfs, 685 SDslu, 2391 SDs, 0 SdLazy, 771 SolverSat, 202 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 603 GetRequests, 571 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2281occurred 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: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 173 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 691 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 595 ConstructedInterpolants, 0 QuantifiedInterpolants, 76185 SizeOfPredicates, 24 NumberOfNonLiveVariables, 6098 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...