/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:39:34,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:39:34,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:39:34,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:39:34,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:39:34,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:39:34,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:39:34,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:39:34,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:39:34,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:39:34,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:39:34,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:39:34,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:39:34,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:39:34,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:39:34,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:39:34,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:39:34,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:39:34,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:39:34,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:39:34,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:39:34,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:39:34,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:39:34,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:39:34,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 15:39:34,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 15:39:34,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 15:39:34,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 15:39:34,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 15:39:34,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 15:39:34,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 15:39:34,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 15:39:34,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 15:39:34,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 15:39:34,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 15:39:34,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 15:39:34,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 15:39:34,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 15:39:34,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:39:34,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:39:34,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:39:34,841 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 [2020-07-21 15:39:34,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:39:34,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:39:34,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:39:34,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:39:34,857 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:39:34,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:39:34,857 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:39:34,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:39:34,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:39:34,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:39:34,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:39:34,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:39:34,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:39:34,859 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:39:34,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:39:34,859 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:39:34,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:39:34,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:39:34,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:39:34,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:39:34,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:39:34,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:39:34,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:39:34,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:39:34,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:39:34,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:39:34,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:34,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:39:34,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:39:34,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 15:39:35,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:39:35,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:39:35,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:39:35,206 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:39:35,207 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:39:35,208 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-07-21 15:39:35,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ed43726/57bc45221e2043a491eb96862e3763cd/FLAG0cd23ddd5 [2020-07-21 15:39:35,833 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:39:35,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-07-21 15:39:35,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ed43726/57bc45221e2043a491eb96862e3763cd/FLAG0cd23ddd5 [2020-07-21 15:39:36,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ed43726/57bc45221e2043a491eb96862e3763cd [2020-07-21 15:39:36,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:39:36,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:39:36,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:39:36,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:39:36,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:39:36,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68eda199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36, skipping insertion in model container [2020-07-21 15:39:36,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:39:36,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:39:36,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:39:36,569 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:39:36,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:39:36,752 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:39:36,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36 WrapperNode [2020-07-21 15:39:36,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:39:36,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:39:36,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:39:36,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:39:36,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:39:36,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:39:36,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:39:36,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:39:36,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (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 [2020-07-21 15:39:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:39:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:39:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 15:39:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 15:39:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 15:39:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 15:39:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 15:39:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 15:39:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 15:39:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 15:39:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 15:39:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 15:39:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 15:39:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 15:39:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 15:39:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 15:39:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 15:39:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 15:39:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 15:39:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 15:39:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 15:39:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 15:39:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 15:39:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 15:39:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 15:39:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 15:39:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 15:39:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 15:39:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 15:39:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 15:39:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 15:39:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:39:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 15:39:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 15:39:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 15:39:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 15:39:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 15:39:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 15:39:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:39:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 15:39:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 15:39:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 15:39:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 15:39:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 15:39:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 15:39:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 15:39:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 15:39:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 15:39:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:39:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 15:39:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 15:39:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 15:39:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 15:39:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 15:39:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 15:39:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 15:39:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 15:39:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 15:39:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 15:39:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 15:39:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 15:39:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 15:39:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 15:39:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 15:39:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 15:39:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 15:39:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 15:39:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 15:39:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 15:39:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 15:39:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:39:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 15:39:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 15:39:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 15:39:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 15:39:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 15:39:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 15:39:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:39:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 15:39:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 15:39:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:39:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 15:39:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 15:39:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:39:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 15:39:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 15:39:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 15:39:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:39:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 15:39:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:39:38,090 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:39:38,090 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 15:39:38,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:38 BoogieIcfgContainer [2020-07-21 15:39:38,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:39:38,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:39:38,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:39:38,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:39:38,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:39:36" (1/3) ... [2020-07-21 15:39:38,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e42bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:38, skipping insertion in model container [2020-07-21 15:39:38,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (2/3) ... [2020-07-21 15:39:38,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e42bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:38, skipping insertion in model container [2020-07-21 15:39:38,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:38" (3/3) ... [2020-07-21 15:39:38,104 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2020-07-21 15:39:38,115 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:39:38,123 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:39:38,139 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:39:38,165 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:39:38,165 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:39:38,165 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:39:38,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:39:38,166 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:39:38,166 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:39:38,166 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:39:38,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:39:38,190 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-07-21 15:39:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 15:39:38,199 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:38,200 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] [2020-07-21 15:39:38,201 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:38,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:38,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1896668179, now seen corresponding path program 1 times [2020-07-21 15:39:38,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:38,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862537699] [2020-07-21 15:39:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 15:39:38,564 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:38,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:38,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:39:38,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:38,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:38,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862537699] [2020-07-21 15:39:38,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:38,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:39:38,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946009904] [2020-07-21 15:39:38,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:39:38,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:38,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:39:38,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:39:38,644 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 2 states. [2020-07-21 15:39:38,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:38,688 INFO L93 Difference]: Finished difference Result 228 states and 283 transitions. [2020-07-21 15:39:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:39:38,690 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 15:39:38,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:38,703 INFO L225 Difference]: With dead ends: 228 [2020-07-21 15:39:38,703 INFO L226 Difference]: Without dead ends: 114 [2020-07-21 15:39:38,708 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 [2020-07-21 15:39:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-21 15:39:38,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-07-21 15:39:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-21 15:39:38,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-07-21 15:39:38,765 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 46 [2020-07-21 15:39:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:38,766 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-07-21 15:39:38,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:39:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-07-21 15:39:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 15:39:38,771 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:38,771 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] [2020-07-21 15:39:38,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:38,986 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:38,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:38,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1220507007, now seen corresponding path program 1 times [2020-07-21 15:39:38,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:38,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949363670] [2020-07-21 15:39:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 15:39:39,301 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:39,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:39,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 15:39:39,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:39,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:39,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949363670] [2020-07-21 15:39:39,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:39,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:39,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148095184] [2020-07-21 15:39:39,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:39,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:39,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:39,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:39,349 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 3 states. [2020-07-21 15:39:39,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:39,369 INFO L93 Difference]: Finished difference Result 168 states and 195 transitions. [2020-07-21 15:39:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:39,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 15:39:39,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:39,371 INFO L225 Difference]: With dead ends: 168 [2020-07-21 15:39:39,372 INFO L226 Difference]: Without dead ends: 105 [2020-07-21 15:39:39,373 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 [2020-07-21 15:39:39,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-21 15:39:39,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-07-21 15:39:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-21 15:39:39,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-07-21 15:39:39,385 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 47 [2020-07-21 15:39:39,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:39,386 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-07-21 15:39:39,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:39,386 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-07-21 15:39:39,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 15:39:39,388 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:39,388 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] [2020-07-21 15:39:39,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:39,603 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:39,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:39,604 INFO L82 PathProgramCache]: Analyzing trace with hash -421022276, now seen corresponding path program 1 times [2020-07-21 15:39:39,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:39,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639761315] [2020-07-21 15:39:39,606 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 15:39:39,866 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:39,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:39,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 15:39:39,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:39,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:39,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639761315] [2020-07-21 15:39:39,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:39,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:39,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048667841] [2020-07-21 15:39:39,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:39,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:39,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:39,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:39,908 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 3 states. [2020-07-21 15:39:39,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:39,955 INFO L93 Difference]: Finished difference Result 265 states and 315 transitions. [2020-07-21 15:39:39,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:39,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-21 15:39:39,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:39,964 INFO L225 Difference]: With dead ends: 265 [2020-07-21 15:39:39,967 INFO L226 Difference]: Without dead ends: 184 [2020-07-21 15:39:39,968 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 [2020-07-21 15:39:39,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-07-21 15:39:40,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 174. [2020-07-21 15:39:40,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-07-21 15:39:40,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2020-07-21 15:39:40,023 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 51 [2020-07-21 15:39:40,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:40,023 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2020-07-21 15:39:40,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2020-07-21 15:39:40,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 15:39:40,033 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:40,033 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] [2020-07-21 15:39:40,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:40,247 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:40,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:40,247 INFO L82 PathProgramCache]: Analyzing trace with hash 498542477, now seen corresponding path program 1 times [2020-07-21 15:39:40,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:40,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377289655] [2020-07-21 15:39:40,249 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 15:39:40,493 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:40,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:40,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:39:40,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:40,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:40,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377289655] [2020-07-21 15:39:40,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:40,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:40,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985595402] [2020-07-21 15:39:40,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:40,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:40,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:40,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:40,560 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand 6 states. [2020-07-21 15:39:40,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:40,810 INFO L93 Difference]: Finished difference Result 424 states and 522 transitions. [2020-07-21 15:39:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:39:40,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 15:39:40,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:40,817 INFO L225 Difference]: With dead ends: 424 [2020-07-21 15:39:40,817 INFO L226 Difference]: Without dead ends: 274 [2020-07-21 15:39:40,823 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 [2020-07-21 15:39:40,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-07-21 15:39:40,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 266. [2020-07-21 15:39:40,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-07-21 15:39:40,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 319 transitions. [2020-07-21 15:39:40,857 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 319 transitions. Word has length 57 [2020-07-21 15:39:40,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:40,858 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 319 transitions. [2020-07-21 15:39:40,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:40,858 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 319 transitions. [2020-07-21 15:39:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-21 15:39:40,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:40,860 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] [2020-07-21 15:39:41,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:41,075 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:41,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:41,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1299137592, now seen corresponding path program 1 times [2020-07-21 15:39:41,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:41,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411244837] [2020-07-21 15:39:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 15:39:41,291 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:39:41,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:41,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 15:39:41,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:41,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:41,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411244837] [2020-07-21 15:39:41,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:41,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:39:41,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294735196] [2020-07-21 15:39:41,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:39:41,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:41,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:39:41,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:41,333 INFO L87 Difference]: Start difference. First operand 266 states and 319 transitions. Second operand 5 states. [2020-07-21 15:39:41,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:41,368 INFO L93 Difference]: Finished difference Result 522 states and 648 transitions. [2020-07-21 15:39:41,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:39:41,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-07-21 15:39:41,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:41,374 INFO L225 Difference]: With dead ends: 522 [2020-07-21 15:39:41,374 INFO L226 Difference]: Without dead ends: 280 [2020-07-21 15:39:41,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:41,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-07-21 15:39:41,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 274. [2020-07-21 15:39:41,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-07-21 15:39:41,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 327 transitions. [2020-07-21 15:39:41,409 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 327 transitions. Word has length 74 [2020-07-21 15:39:41,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:41,411 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 327 transitions. [2020-07-21 15:39:41,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:39:41,412 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 327 transitions. [2020-07-21 15:39:41,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-21 15:39:41,413 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:41,413 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] [2020-07-21 15:39:41,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:41,628 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:41,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:41,629 INFO L82 PathProgramCache]: Analyzing trace with hash 789664502, now seen corresponding path program 1 times [2020-07-21 15:39:41,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:41,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918327852] [2020-07-21 15:39:41,631 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 15:39:41,885 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:41,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:41,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 15:39:41,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:41,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:41,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918327852] [2020-07-21 15:39:41,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:41,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:41,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499353124] [2020-07-21 15:39:41,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:41,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:41,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:41,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:41,930 INFO L87 Difference]: Start difference. First operand 274 states and 327 transitions. Second operand 3 states. [2020-07-21 15:39:41,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:41,992 INFO L93 Difference]: Finished difference Result 750 states and 961 transitions. [2020-07-21 15:39:41,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:41,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-07-21 15:39:41,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:41,996 INFO L225 Difference]: With dead ends: 750 [2020-07-21 15:39:41,997 INFO L226 Difference]: Without dead ends: 500 [2020-07-21 15:39:41,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:41,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-07-21 15:39:42,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 497. [2020-07-21 15:39:42,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-07-21 15:39:42,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 622 transitions. [2020-07-21 15:39:42,027 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 622 transitions. Word has length 74 [2020-07-21 15:39:42,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:42,027 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 622 transitions. [2020-07-21 15:39:42,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:42,027 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 622 transitions. [2020-07-21 15:39:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-21 15:39:42,029 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:42,030 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] [2020-07-21 15:39:42,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:42,245 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:42,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:42,246 INFO L82 PathProgramCache]: Analyzing trace with hash -985725863, now seen corresponding path program 1 times [2020-07-21 15:39:42,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:42,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932431080] [2020-07-21 15:39:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 15:39:42,460 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:42,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:42,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 15:39:42,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:42,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:42,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932431080] [2020-07-21 15:39:42,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:42,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:42,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202275395] [2020-07-21 15:39:42,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:42,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:42,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:42,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:42,514 INFO L87 Difference]: Start difference. First operand 497 states and 622 transitions. Second operand 6 states. [2020-07-21 15:39:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:42,773 INFO L93 Difference]: Finished difference Result 1408 states and 1828 transitions. [2020-07-21 15:39:42,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:39:42,774 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-07-21 15:39:42,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:42,783 INFO L225 Difference]: With dead ends: 1408 [2020-07-21 15:39:42,783 INFO L226 Difference]: Without dead ends: 935 [2020-07-21 15:39:42,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 15:39:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-07-21 15:39:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 919. [2020-07-21 15:39:42,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-07-21 15:39:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1158 transitions. [2020-07-21 15:39:42,856 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1158 transitions. Word has length 74 [2020-07-21 15:39:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:42,857 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1158 transitions. [2020-07-21 15:39:42,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:42,857 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1158 transitions. [2020-07-21 15:39:42,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-21 15:39:42,861 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:42,862 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] [2020-07-21 15:39:43,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:43,076 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:43,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:43,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1060992747, now seen corresponding path program 1 times [2020-07-21 15:39:43,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:43,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901385048] [2020-07-21 15:39:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 15:39:43,345 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:43,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:43,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:39:43,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:43,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:43,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901385048] [2020-07-21 15:39:43,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:43,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:43,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241818856] [2020-07-21 15:39:43,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:43,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:43,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:43,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:43,381 INFO L87 Difference]: Start difference. First operand 919 states and 1158 transitions. Second operand 6 states. [2020-07-21 15:39:43,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:43,443 INFO L93 Difference]: Finished difference Result 1834 states and 2352 transitions. [2020-07-21 15:39:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:39:43,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-07-21 15:39:43,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:43,450 INFO L225 Difference]: With dead ends: 1834 [2020-07-21 15:39:43,450 INFO L226 Difference]: Without dead ends: 939 [2020-07-21 15:39:43,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:39:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-07-21 15:39:43,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 939. [2020-07-21 15:39:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2020-07-21 15:39:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1182 transitions. [2020-07-21 15:39:43,501 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1182 transitions. Word has length 78 [2020-07-21 15:39:43,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:43,501 INFO L479 AbstractCegarLoop]: Abstraction has 939 states and 1182 transitions. [2020-07-21 15:39:43,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1182 transitions. [2020-07-21 15:39:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-21 15:39:43,504 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:43,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:43,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:43,719 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:43,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:43,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1570465837, now seen corresponding path program 1 times [2020-07-21 15:39:43,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:43,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730169858] [2020-07-21 15:39:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 15:39:43,879 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:39:43,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:43,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 15:39:43,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:43,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:43,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730169858] [2020-07-21 15:39:43,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:43,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:39:43,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136141587] [2020-07-21 15:39:43,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:39:43,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:43,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:39:43,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:43,919 INFO L87 Difference]: Start difference. First operand 939 states and 1182 transitions. Second operand 5 states. [2020-07-21 15:39:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:43,976 INFO L93 Difference]: Finished difference Result 1818 states and 2348 transitions. [2020-07-21 15:39:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:39:43,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-07-21 15:39:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:43,983 INFO L225 Difference]: With dead ends: 1818 [2020-07-21 15:39:43,983 INFO L226 Difference]: Without dead ends: 903 [2020-07-21 15:39:43,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:43,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-07-21 15:39:44,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 903. [2020-07-21 15:39:44,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-07-21 15:39:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1114 transitions. [2020-07-21 15:39:44,051 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1114 transitions. Word has length 78 [2020-07-21 15:39:44,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:44,051 INFO L479 AbstractCegarLoop]: Abstraction has 903 states and 1114 transitions. [2020-07-21 15:39:44,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:39:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1114 transitions. [2020-07-21 15:39:44,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-21 15:39:44,055 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:44,055 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] [2020-07-21 15:39:44,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:44,269 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:44,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:44,269 INFO L82 PathProgramCache]: Analyzing trace with hash -341045236, now seen corresponding path program 1 times [2020-07-21 15:39:44,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:44,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661301311] [2020-07-21 15:39:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 15:39:44,577 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:44,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:39:44,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:39:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:39:44,666 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:39:44,953 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:39:44,953 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:39:45,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:45,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:39:45 BoogieIcfgContainer [2020-07-21 15:39:45,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:39:45,367 INFO L168 Benchmark]: Toolchain (without parser) took 9245.36 ms. Allocated memory was 142.1 MB in the beginning and 358.6 MB in the end (delta: 216.5 MB). Free memory was 98.6 MB in the beginning and 273.0 MB in the end (delta: -174.4 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:45,368 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 15:39:45,369 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.80 ms. Allocated memory was 142.1 MB in the beginning and 198.7 MB in the end (delta: 56.6 MB). Free memory was 98.2 MB in the beginning and 165.0 MB in the end (delta: -66.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:45,369 INFO L168 Benchmark]: Boogie Preprocessor took 124.39 ms. Allocated memory is still 198.7 MB. Free memory was 165.0 MB in the beginning and 160.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:45,370 INFO L168 Benchmark]: RCFGBuilder took 1215.97 ms. Allocated memory was 198.7 MB in the beginning and 226.0 MB in the end (delta: 27.3 MB). Free memory was 160.6 MB in the beginning and 192.4 MB in the end (delta: -31.8 MB). Peak memory consumption was 87.7 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:45,371 INFO L168 Benchmark]: TraceAbstraction took 7268.28 ms. Allocated memory was 226.0 MB in the beginning and 358.6 MB in the end (delta: 132.6 MB). Free memory was 192.4 MB in the beginning and 273.0 MB in the end (delta: -80.6 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:45,374 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 628.80 ms. Allocated memory was 142.1 MB in the beginning and 198.7 MB in the end (delta: 56.6 MB). Free memory was 98.2 MB in the beginning and 165.0 MB in the end (delta: -66.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.39 ms. Allocated memory is still 198.7 MB. Free memory was 165.0 MB in the beginning and 160.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1215.97 ms. Allocated memory was 198.7 MB in the beginning and 226.0 MB in the end (delta: 27.3 MB). Free memory was 160.6 MB in the beginning and 192.4 MB in the end (delta: -31.8 MB). Peak memory consumption was 87.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7268.28 ms. Allocated memory was 226.0 MB in the beginning and 358.6 MB in the end (delta: 132.6 MB). Free memory was 192.4 MB in the beginning and 273.0 MB in the end (delta: -80.6 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 145]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L250] int pumpRunning = 0; [L251] int systemActive = 1; [L455] int cleanupTimeShifts = 4; [L720] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=106, \old(head)=59, \old(head)=38, \old(methaneLevelCritical)=52, \old(pumpRunning)=48, \old(systemActive)=60, \old(waterLevel)=39, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L528] int retValue_acc ; [L529] 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] [L533] 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] [L534] 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] [L535] 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] [L446] int retValue_acc ; [L449] retValue_acc = 1 [L450] 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] [L535] 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] [L535] tmp = valid_product() [L537] 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] [L539] 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] [L540] 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] [L522] 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] [L181] int splverifierCounter ; [L182] int tmp ; [L183] int tmp___0 ; [L184] int tmp___1 ; [L185] int tmp___2 ; [L188] 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] [L190] 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] [L192] 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] [L198] tmp = __VERIFIER_nondet_int() [L200] 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] [L202] 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] [L65] COND TRUE waterLevel < 2 [L66] 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] [L202] 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] [L208] tmp___0 = __VERIFIER_nondet_int() [L210] 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] [L212] 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] [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] 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] [L212] 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] [L218] tmp___2 = __VERIFIER_nondet_int() [L220] 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] [L235] 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] [L257] 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] [L264] 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] [L266] 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] [L286] 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] [L289] 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] [L291] 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] [L383] int retValue_acc ; [L384] int tmp ; [L385] 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] [L389] 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] [L127] 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] [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] 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] [L389] 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] [L389] tmp = isHighWaterSensorDry() [L391] COND FALSE !(\read(tmp)) [L394] 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] [L396] retValue_acc = tmp___0 [L397] 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] [L291] 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] [L291] tmp = isHighWaterLevel() [L293] 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] [L295] 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] [L314] 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] [L295] 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] [L266] 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] [L272] 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] [L152] int tmp ; [L153] 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] [L157] 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] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] 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] [L157] 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] [L157] tmp = isMethaneLevelCritical() [L159] 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] [L161] 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] [L338] int retValue_acc ; [L341] retValue_acc = pumpRunning [L342] 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] [L161] 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] [L161] tmp___0 = isPumpRunning() [L163] 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] [L165] 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] [L145] __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 38 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1171 SDtfs, 325 SDslu, 2289 SDs, 0 SdLazy, 183 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 575 GetRequests, 548 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=939occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 43 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 661 NumberOfCodeBlocks, 585 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 570 ConstructedInterpolants, 0 QuantifiedInterpolants, 61118 SizeOfPredicates, 21 NumberOfNonLiveVariables, 6002 ConjunctsInSsa, 80 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...