./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 808e109e6e5bbd4457b727764ccf6e4076a38ae9 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:43:17,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:43:17,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:43:17,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:43:17,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:43:17,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:43:17,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:43:17,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:43:17,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:43:17,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:43:17,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:43:17,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:43:17,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:43:17,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:43:17,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:43:17,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:43:17,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:43:17,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:43:17,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:43:17,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:43:17,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:43:17,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:43:17,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:43:17,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:43:17,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:43:17,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:43:17,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:43:17,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:43:17,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:43:17,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:43:17,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:43:17,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:43:17,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:43:17,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:43:17,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:43:17,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:43:17,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:43:17,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:43:17,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:43:17,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:43:17,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:43:17,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:43:18,000 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:43:18,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:43:18,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:43:18,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:43:18,003 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:43:18,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:43:18,003 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:43:18,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:43:18,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:43:18,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:43:18,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:43:18,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:43:18,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:43:18,007 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:43:18,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:43:18,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:43:18,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:43:18,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:43:18,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:43:18,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:43:18,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:43:18,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:43:18,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:43:18,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:43:18,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:43:18,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:43:18,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:43:18,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:43:18,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:43:18,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 808e109e6e5bbd4457b727764ccf6e4076a38ae9 [2020-10-20 01:43:18,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:43:18,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:43:18,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:43:18,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:43:18,239 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:43:18,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2020-10-20 01:43:18,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c997cc5c7/8affb77b749e4d1782a9e32d2e6b6c88/FLAGc6eb299ba [2020-10-20 01:43:18,862 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:43:18,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2020-10-20 01:43:18,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c997cc5c7/8affb77b749e4d1782a9e32d2e6b6c88/FLAGc6eb299ba [2020-10-20 01:43:19,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c997cc5c7/8affb77b749e4d1782a9e32d2e6b6c88 [2020-10-20 01:43:19,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:43:19,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:43:19,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:43:19,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:43:19,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:43:19,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:43:19" (1/1) ... [2020-10-20 01:43:19,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e17e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:19, skipping insertion in model container [2020-10-20 01:43:19,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:43:19" (1/1) ... [2020-10-20 01:43:19,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:43:19,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:43:19,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:43:19,749 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:43:19,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:43:19,926 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:43:19,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:19 WrapperNode [2020-10-20 01:43:19,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:43:19,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:43:19,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:43:19,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:43:19,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:19" (1/1) ... [2020-10-20 01:43:19,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:19" (1/1) ... [2020-10-20 01:43:20,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:43:20,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:43:20,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:43:20,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:43:20,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:19" (1/1) ... [2020-10-20 01:43:20,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:19" (1/1) ... [2020-10-20 01:43:20,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:19" (1/1) ... [2020-10-20 01:43:20,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:19" (1/1) ... [2020-10-20 01:43:20,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:19" (1/1) ... [2020-10-20 01:43:20,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:19" (1/1) ... [2020-10-20 01:43:20,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:19" (1/1) ... [2020-10-20 01:43:20,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:43:20,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:43:20,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:43:20,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:43:20,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:19" (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 [2020-10-20 01:43:20,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:43:20,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:43:20,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:43:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:43:21,194 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:43:21,195 INFO L298 CfgBuilder]: Removed 174 assume(true) statements. [2020-10-20 01:43:21,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:43:21 BoogieIcfgContainer [2020-10-20 01:43:21,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:43:21,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:43:21,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:43:21,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:43:21,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:43:19" (1/3) ... [2020-10-20 01:43:21,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11387862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:43:21, skipping insertion in model container [2020-10-20 01:43:21,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:19" (2/3) ... [2020-10-20 01:43:21,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11387862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:43:21, skipping insertion in model container [2020-10-20 01:43:21,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:43:21" (3/3) ... [2020-10-20 01:43:21,205 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product40.cil.c [2020-10-20 01:43:21,218 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:43:21,226 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:43:21,239 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:43:21,261 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:43:21,262 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:43:21,262 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:43:21,275 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:43:21,276 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:43:21,276 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:43:21,276 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:43:21,277 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:43:21,297 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2020-10-20 01:43:21,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 01:43:21,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:21,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:43:21,306 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:21,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:21,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1067326389, now seen corresponding path program 1 times [2020-10-20 01:43:21,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:21,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388252914] [2020-10-20 01:43:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:43:21,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388252914] [2020-10-20 01:43:21,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:21,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:43:21,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513512764] [2020-10-20 01:43:21,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:43:21,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:21,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:43:21,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:43:21,622 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 2 states. [2020-10-20 01:43:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:21,658 INFO L93 Difference]: Finished difference Result 235 states and 356 transitions. [2020-10-20 01:43:21,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:43:21,659 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-10-20 01:43:21,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:21,672 INFO L225 Difference]: With dead ends: 235 [2020-10-20 01:43:21,672 INFO L226 Difference]: Without dead ends: 115 [2020-10-20 01:43:21,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:43:21,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-20 01:43:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-20 01:43:21,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-20 01:43:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2020-10-20 01:43:21,737 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 18 [2020-10-20 01:43:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:21,737 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2020-10-20 01:43:21,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:43:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2020-10-20 01:43:21,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 01:43:21,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:21,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:43:21,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:43:21,740 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:21,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:21,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1978357142, now seen corresponding path program 1 times [2020-10-20 01:43:21,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:21,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469251992] [2020-10-20 01:43:21,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:43:21,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469251992] [2020-10-20 01:43:21,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:21,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:43:21,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585786194] [2020-10-20 01:43:21,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:43:21,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:21,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:43:21,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:21,878 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand 3 states. [2020-10-20 01:43:21,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:21,892 INFO L93 Difference]: Finished difference Result 115 states and 168 transitions. [2020-10-20 01:43:21,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:43:21,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-20 01:43:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:21,894 INFO L225 Difference]: With dead ends: 115 [2020-10-20 01:43:21,895 INFO L226 Difference]: Without dead ends: 49 [2020-10-20 01:43:21,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:21,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-20 01:43:21,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-20 01:43:21,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 01:43:21,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2020-10-20 01:43:21,904 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 19 [2020-10-20 01:43:21,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:21,905 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2020-10-20 01:43:21,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:43:21,905 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2020-10-20 01:43:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:43:21,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:21,907 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] [2020-10-20 01:43:21,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:43:21,907 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:21,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1740217190, now seen corresponding path program 1 times [2020-10-20 01:43:21,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:21,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67798268] [2020-10-20 01:43:21,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:22,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:43:22,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67798268] [2020-10-20 01:43:22,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:22,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:43:22,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61810558] [2020-10-20 01:43:22,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:43:22,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:22,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:43:22,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:22,073 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 3 states. [2020-10-20 01:43:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:22,111 INFO L93 Difference]: Finished difference Result 135 states and 201 transitions. [2020-10-20 01:43:22,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:43:22,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-20 01:43:22,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:22,113 INFO L225 Difference]: With dead ends: 135 [2020-10-20 01:43:22,114 INFO L226 Difference]: Without dead ends: 92 [2020-10-20 01:43:22,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:22,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-20 01:43:22,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2020-10-20 01:43:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-20 01:43:22,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 131 transitions. [2020-10-20 01:43:22,128 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 131 transitions. Word has length 24 [2020-10-20 01:43:22,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:22,128 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 131 transitions. [2020-10-20 01:43:22,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:43:22,129 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 131 transitions. [2020-10-20 01:43:22,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 01:43:22,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:22,130 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] [2020-10-20 01:43:22,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:43:22,131 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:22,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:22,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1869059729, now seen corresponding path program 1 times [2020-10-20 01:43:22,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:22,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659328069] [2020-10-20 01:43:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:43:22,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659328069] [2020-10-20 01:43:22,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:22,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:43:22,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873702593] [2020-10-20 01:43:22,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:43:22,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:22,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:43:22,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:22,193 INFO L87 Difference]: Start difference. First operand 88 states and 131 transitions. Second operand 3 states. [2020-10-20 01:43:22,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:22,278 INFO L93 Difference]: Finished difference Result 215 states and 324 transitions. [2020-10-20 01:43:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:43:22,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-20 01:43:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:22,283 INFO L225 Difference]: With dead ends: 215 [2020-10-20 01:43:22,283 INFO L226 Difference]: Without dead ends: 133 [2020-10-20 01:43:22,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-20 01:43:22,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-10-20 01:43:22,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-20 01:43:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 191 transitions. [2020-10-20 01:43:22,304 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 191 transitions. Word has length 26 [2020-10-20 01:43:22,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:22,304 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 191 transitions. [2020-10-20 01:43:22,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:43:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 191 transitions. [2020-10-20 01:43:22,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 01:43:22,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:22,306 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] [2020-10-20 01:43:22,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:43:22,307 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:22,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:22,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1176876603, now seen corresponding path program 1 times [2020-10-20 01:43:22,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:22,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552706356] [2020-10-20 01:43:22,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:43:22,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552706356] [2020-10-20 01:43:22,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:22,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:43:22,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925584358] [2020-10-20 01:43:22,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:43:22,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:22,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:43:22,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:43:22,384 INFO L87 Difference]: Start difference. First operand 131 states and 191 transitions. Second operand 5 states. [2020-10-20 01:43:22,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:22,535 INFO L93 Difference]: Finished difference Result 691 states and 1025 transitions. [2020-10-20 01:43:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:43:22,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-20 01:43:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:22,540 INFO L225 Difference]: With dead ends: 691 [2020-10-20 01:43:22,540 INFO L226 Difference]: Without dead ends: 566 [2020-10-20 01:43:22,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:43:22,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-10-20 01:43:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 222. [2020-10-20 01:43:22,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-20 01:43:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 314 transitions. [2020-10-20 01:43:22,568 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 314 transitions. Word has length 27 [2020-10-20 01:43:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:22,569 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 314 transitions. [2020-10-20 01:43:22,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:43:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 314 transitions. [2020-10-20 01:43:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 01:43:22,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:22,571 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] [2020-10-20 01:43:22,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:43:22,572 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:22,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:22,572 INFO L82 PathProgramCache]: Analyzing trace with hash -523387139, now seen corresponding path program 1 times [2020-10-20 01:43:22,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:22,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784146766] [2020-10-20 01:43:22,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:43:22,662 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:43:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:43:22,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:43:22,768 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:43:22,768 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:43:22,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:43:22,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:43:22 BoogieIcfgContainer [2020-10-20 01:43:22,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:43:22,876 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:43:22,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:43:22,876 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:43:22,877 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:43:21" (3/4) ... [2020-10-20 01:43:22,880 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:43:22,990 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:43:22,990 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:43:22,995 INFO L168 Benchmark]: Toolchain (without parser) took 3822.55 ms. Allocated memory was 40.4 MB in the beginning and 58.2 MB in the end (delta: 17.8 MB). Free memory was 17.3 MB in the beginning and 25.9 MB in the end (delta: -8.6 MB). Peak memory consumption was 25.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:22,996 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 30.9 MB. Free memory was 6.2 MB in the beginning and 6.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 01:43:22,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.82 ms. Allocated memory was 40.4 MB in the beginning and 42.5 MB in the end (delta: 2.1 MB). Free memory was 16.4 MB in the beginning and 18.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:22,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.20 ms. Allocated memory is still 42.5 MB. Free memory was 18.3 MB in the beginning and 14.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:22,998 INFO L168 Benchmark]: Boogie Preprocessor took 85.61 ms. Allocated memory is still 42.5 MB. Free memory was 14.3 MB in the beginning and 11.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:22,999 INFO L168 Benchmark]: RCFGBuilder took 1093.85 ms. Allocated memory was 42.5 MB in the beginning and 47.2 MB in the end (delta: 4.7 MB). Free memory was 11.3 MB in the beginning and 14.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:23,005 INFO L168 Benchmark]: TraceAbstraction took 1677.36 ms. Allocated memory was 47.2 MB in the beginning and 57.7 MB in the end (delta: 10.5 MB). Free memory was 14.0 MB in the beginning and 11.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:23,006 INFO L168 Benchmark]: Witness Printer took 114.67 ms. Allocated memory was 57.7 MB in the beginning and 58.2 MB in the end (delta: 524.3 kB). Free memory was 11.3 MB in the beginning and 25.9 MB in the end (delta: -14.6 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:23,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 30.9 MB. Free memory was 6.2 MB in the beginning and 6.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 750.82 ms. Allocated memory was 40.4 MB in the beginning and 42.5 MB in the end (delta: 2.1 MB). Free memory was 16.4 MB in the beginning and 18.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 81.20 ms. Allocated memory is still 42.5 MB. Free memory was 18.3 MB in the beginning and 14.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 85.61 ms. Allocated memory is still 42.5 MB. Free memory was 14.3 MB in the beginning and 11.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1093.85 ms. Allocated memory was 42.5 MB in the beginning and 47.2 MB in the end (delta: 4.7 MB). Free memory was 11.3 MB in the beginning and 14.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1677.36 ms. Allocated memory was 47.2 MB in the beginning and 57.7 MB in the end (delta: 10.5 MB). Free memory was 14.0 MB in the beginning and 11.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. * Witness Printer took 114.67 ms. Allocated memory was 57.7 MB in the beginning and 58.2 MB in the end (delta: 524.3 kB). Free memory was 11.3 MB in the beginning and 25.9 MB in the end (delta: -14.6 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L231] int waterLevel = 1; [L232] int methaneLevelCritical = 0; [L329] int pumpRunning = 0; [L330] int systemActive = 1; [L768] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L531] int splverifierCounter ; [L532] int tmp ; [L533] int tmp___0 ; [L534] int tmp___1 ; [L535] int tmp___2 ; [L538] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L540] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L542] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L548] tmp = __VERIFIER_nondet_int() [L550] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L249] COND TRUE waterLevel < 2 [L250] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L558] tmp___0 = __VERIFIER_nondet_int() [L560] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L568] tmp___2 = __VERIFIER_nondet_int() [L570] COND FALSE !(\read(tmp___2)) [L576] tmp___1 = __VERIFIER_nondet_int() [L578] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L510] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L517] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L336] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L343] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L186] int tmp ; [L187] int tmp___0 ; [L188] int tmp___1 ; [L270] int retValue_acc ; [L273] retValue_acc = methaneLevelCritical [L274] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L192] tmp = isMethaneLevelCritical() [L194] COND FALSE !(\read(tmp)) [L302] int retValue_acc ; [L305] retValue_acc = waterLevel [L306] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L198] tmp___0 = getWaterLevel() [L200] COND TRUE tmp___0 == 2 [L443] int retValue_acc ; [L446] retValue_acc = pumpRunning [L447] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L202] tmp___1 = isPumpRunning() [L204] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L3] __assert_fail("0", "minepump_spec3_product40.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 122 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 495 SDtfs, 445 SDslu, 382 SDs, 0 SdLazy, 63 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 350 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 4653 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...