./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5f57b6f2bb2bb4fa43dac897ff23a28c21886d7b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.24-cad4683 [2019-11-15 22:26:08,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:26:08,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:26:08,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:26:08,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:26:08,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:26:08,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:26:08,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:26:08,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:26:08,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:26:08,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:26:08,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:26:08,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:26:08,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:26:08,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:26:08,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:26:08,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:26:08,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:26:08,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:26:08,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:26:08,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:26:08,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:26:08,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:26:08,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:26:08,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:26:08,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:26:08,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:26:08,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:26:08,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:26:08,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:26:08,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:26:08,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:26:08,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:26:08,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:26:08,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:26:08,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:26:08,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:26:08,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:26:08,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:26:08,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:26:08,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:26:08,923 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:26:08,935 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:26:08,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:26:08,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:26:08,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:26:08,937 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:26:08,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:26:08,937 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:26:08,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:26:08,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:26:08,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:26:08,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:26:08,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:26:08,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:26:08,939 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:26:08,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:26:08,939 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:26:08,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:26:08,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:26:08,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:26:08,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:26:08,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:26:08,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:26:08,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:26:08,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:26:08,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:26:08,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:26:08,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:26:08,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:26:08,942 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer 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(__VERIFIER_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 -> 5f57b6f2bb2bb4fa43dac897ff23a28c21886d7b [2019-11-15 22:26:08,967 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:26:08,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:26:08,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:26:08,981 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:26:08,981 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:26:08,982 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2019-11-15 22:26:09,032 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer/data/f62ddc958/e618309eec0f4d35b28b868d2a91ca74/FLAGcaba47583 [2019-11-15 22:26:09,464 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:26:09,465 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2019-11-15 22:26:09,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer/data/f62ddc958/e618309eec0f4d35b28b868d2a91ca74/FLAGcaba47583 [2019-11-15 22:26:09,498 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer/data/f62ddc958/e618309eec0f4d35b28b868d2a91ca74 [2019-11-15 22:26:09,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:26:09,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:26:09,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:26:09,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:26:09,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:26:09,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:26:09" (1/1) ... [2019-11-15 22:26:09,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224d9e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:26:09, skipping insertion in model container [2019-11-15 22:26:09,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:26:09" (1/1) ... [2019-11-15 22:26:09,515 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:26:09,566 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:26:09,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:26:09,920 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:26:10,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:26:10,056 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:26:10,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:26:10 WrapperNode [2019-11-15 22:26:10,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:26:10,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:26:10,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:26:10,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:26:10,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:26:10" (1/1) ... [2019-11-15 22:26:10,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:26:10" (1/1) ... [2019-11-15 22:26:10,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:26:10,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:26:10,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:26:10,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:26:10,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:26:10" (1/1) ... [2019-11-15 22:26:10,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:26:10" (1/1) ... [2019-11-15 22:26:10,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:26:10" (1/1) ... [2019-11-15 22:26:10,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:26:10" (1/1) ... [2019-11-15 22:26:10,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:26:10" (1/1) ... [2019-11-15 22:26:10,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:26:10" (1/1) ... [2019-11-15 22:26:10,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:26:10" (1/1) ... [2019-11-15 22:26:10,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:26:10,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:26:10,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:26:10,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:26:10,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:26:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer/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 [2019-11-15 22:26:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:26:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-15 22:26:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:26:10,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:26:11,311 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:26:11,311 INFO L284 CfgBuilder]: Removed 198 assume(true) statements. [2019-11-15 22:26:11,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:26:11 BoogieIcfgContainer [2019-11-15 22:26:11,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:26:11,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:26:11,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:26:11,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:26:11,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:26:09" (1/3) ... [2019-11-15 22:26:11,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632a1844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:26:11, skipping insertion in model container [2019-11-15 22:26:11,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:26:10" (2/3) ... [2019-11-15 22:26:11,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632a1844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:26:11, skipping insertion in model container [2019-11-15 22:26:11,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:26:11" (3/3) ... [2019-11-15 22:26:11,322 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product48.cil.c [2019-11-15 22:26:11,331 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:26:11,342 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-15 22:26:11,354 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-15 22:26:11,378 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:26:11,378 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:26:11,378 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:26:11,378 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:26:11,379 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:26:11,379 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:26:11,379 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:26:11,379 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:26:11,397 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2019-11-15 22:26:11,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 22:26:11,404 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:26:11,405 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:26:11,407 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:26:11,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:26:11,412 INFO L82 PathProgramCache]: Analyzing trace with hash 325683581, now seen corresponding path program 1 times [2019-11-15 22:26:11,420 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:26:11,421 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278258659] [2019-11-15 22:26:11,421 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:11,421 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:11,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:26:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:26:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:26:11,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278258659] [2019-11-15 22:26:11,607 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:26:11,608 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 22:26:11,608 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671422086] [2019-11-15 22:26:11,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 22:26:11,612 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:26:11,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 22:26:11,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 22:26:11,627 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 2 states. [2019-11-15 22:26:11,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:26:11,660 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2019-11-15 22:26:11,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 22:26:11,661 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-15 22:26:11,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:26:11,672 INFO L225 Difference]: With dead ends: 256 [2019-11-15 22:26:11,672 INFO L226 Difference]: Without dead ends: 127 [2019-11-15 22:26:11,675 INFO L600 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 [2019-11-15 22:26:11,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-11-15 22:26:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-11-15 22:26:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-15 22:26:11,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2019-11-15 22:26:11,716 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 16 [2019-11-15 22:26:11,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:26:11,717 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2019-11-15 22:26:11,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 22:26:11,717 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2019-11-15 22:26:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 22:26:11,718 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:26:11,718 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:26:11,719 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:26:11,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:26:11,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1302516555, now seen corresponding path program 1 times [2019-11-15 22:26:11,719 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:26:11,719 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564077248] [2019-11-15 22:26:11,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:11,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:11,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:26:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:26:11,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:26:11,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564077248] [2019-11-15 22:26:11,808 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:26:11,808 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:26:11,808 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839252386] [2019-11-15 22:26:11,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:26:11,810 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:26:11,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:26:11,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:26:11,810 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand 3 states. [2019-11-15 22:26:11,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:26:11,828 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2019-11-15 22:26:11,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:26:11,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-15 22:26:11,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:26:11,831 INFO L225 Difference]: With dead ends: 127 [2019-11-15 22:26:11,831 INFO L226 Difference]: Without dead ends: 53 [2019-11-15 22:26:11,832 INFO L600 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 [2019-11-15 22:26:11,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-15 22:26:11,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-11-15 22:26:11,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-15 22:26:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2019-11-15 22:26:11,839 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 17 [2019-11-15 22:26:11,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:26:11,840 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2019-11-15 22:26:11,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:26:11,840 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2019-11-15 22:26:11,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 22:26:11,841 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:26:11,841 INFO L380 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] [2019-11-15 22:26:11,841 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:26:11,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:26:11,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1189907750, now seen corresponding path program 1 times [2019-11-15 22:26:11,842 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:26:11,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224390706] [2019-11-15 22:26:11,842 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:11,842 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:11,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:26:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:26:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:26:11,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224390706] [2019-11-15 22:26:11,950 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:26:11,951 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:26:11,951 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014453178] [2019-11-15 22:26:11,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:26:11,952 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:26:11,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:26:11,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:26:11,952 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand 5 states. [2019-11-15 22:26:12,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:26:12,071 INFO L93 Difference]: Finished difference Result 123 states and 180 transitions. [2019-11-15 22:26:12,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:26:12,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-15 22:26:12,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:26:12,078 INFO L225 Difference]: With dead ends: 123 [2019-11-15 22:26:12,078 INFO L226 Difference]: Without dead ends: 76 [2019-11-15 22:26:12,079 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:26:12,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-15 22:26:12,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2019-11-15 22:26:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-15 22:26:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2019-11-15 22:26:12,098 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 22 [2019-11-15 22:26:12,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:26:12,098 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2019-11-15 22:26:12,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:26:12,098 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2019-11-15 22:26:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 22:26:12,101 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:26:12,101 INFO L380 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] [2019-11-15 22:26:12,101 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:26:12,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:26:12,102 INFO L82 PathProgramCache]: Analyzing trace with hash 752688312, now seen corresponding path program 1 times [2019-11-15 22:26:12,102 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:26:12,102 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520157251] [2019-11-15 22:26:12,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:12,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:12,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:26:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:26:12,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:26:12,222 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520157251] [2019-11-15 22:26:12,223 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:26:12,223 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 22:26:12,223 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62980356] [2019-11-15 22:26:12,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:26:12,224 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:26:12,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:26:12,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:26:12,224 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand 3 states. [2019-11-15 22:26:12,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:26:12,288 INFO L93 Difference]: Finished difference Result 159 states and 234 transitions. [2019-11-15 22:26:12,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:26:12,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-15 22:26:12,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:26:12,290 INFO L225 Difference]: With dead ends: 159 [2019-11-15 22:26:12,290 INFO L226 Difference]: Without dead ends: 93 [2019-11-15 22:26:12,291 INFO L600 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 [2019-11-15 22:26:12,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-15 22:26:12,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2019-11-15 22:26:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-15 22:26:12,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2019-11-15 22:26:12,302 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 24 [2019-11-15 22:26:12,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:26:12,302 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2019-11-15 22:26:12,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:26:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2019-11-15 22:26:12,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-15 22:26:12,304 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:26:12,304 INFO L380 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] [2019-11-15 22:26:12,305 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:26:12,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:26:12,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1744683281, now seen corresponding path program 1 times [2019-11-15 22:26:12,306 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:26:12,306 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724532974] [2019-11-15 22:26:12,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:12,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:12,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:26:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:26:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:26:12,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724532974] [2019-11-15 22:26:12,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:26:12,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:26:12,460 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731992682] [2019-11-15 22:26:12,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:26:12,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:26:12,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:26:12,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:26:12,461 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand 8 states. [2019-11-15 22:26:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:26:12,872 INFO L93 Difference]: Finished difference Result 585 states and 851 transitions. [2019-11-15 22:26:12,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-15 22:26:12,872 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-11-15 22:26:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:26:12,877 INFO L225 Difference]: With dead ends: 585 [2019-11-15 22:26:12,878 INFO L226 Difference]: Without dead ends: 500 [2019-11-15 22:26:12,882 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-11-15 22:26:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-11-15 22:26:12,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 227. [2019-11-15 22:26:12,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-11-15 22:26:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 316 transitions. [2019-11-15 22:26:12,946 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 316 transitions. Word has length 25 [2019-11-15 22:26:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:26:12,946 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 316 transitions. [2019-11-15 22:26:12,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:26:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 316 transitions. [2019-11-15 22:26:12,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-15 22:26:12,954 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:26:12,954 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:26:12,954 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:26:12,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:26:12,955 INFO L82 PathProgramCache]: Analyzing trace with hash 31993027, now seen corresponding path program 1 times [2019-11-15 22:26:12,955 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:26:12,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927560650] [2019-11-15 22:26:12,956 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:12,956 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:12,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:26:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:26:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-15 22:26:13,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927560650] [2019-11-15 22:26:13,073 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:26:13,073 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:26:13,073 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312823594] [2019-11-15 22:26:13,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:26:13,074 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:26:13,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:26:13,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:26:13,074 INFO L87 Difference]: Start difference. First operand 227 states and 316 transitions. Second operand 5 states. [2019-11-15 22:26:13,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:26:13,230 INFO L93 Difference]: Finished difference Result 543 states and 767 transitions. [2019-11-15 22:26:13,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 22:26:13,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2019-11-15 22:26:13,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:26:13,234 INFO L225 Difference]: With dead ends: 543 [2019-11-15 22:26:13,235 INFO L226 Difference]: Without dead ends: 541 [2019-11-15 22:26:13,235 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:26:13,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2019-11-15 22:26:13,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 227. [2019-11-15 22:26:13,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-11-15 22:26:13,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 314 transitions. [2019-11-15 22:26:13,256 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 314 transitions. Word has length 41 [2019-11-15 22:26:13,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:26:13,257 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 314 transitions. [2019-11-15 22:26:13,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:26:13,257 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 314 transitions. [2019-11-15 22:26:13,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-15 22:26:13,258 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:26:13,259 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:26:13,259 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:26:13,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:26:13,259 INFO L82 PathProgramCache]: Analyzing trace with hash 501007855, now seen corresponding path program 1 times [2019-11-15 22:26:13,259 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:26:13,260 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604628313] [2019-11-15 22:26:13,260 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:13,260 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:13,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:26:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:26:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-15 22:26:13,327 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604628313] [2019-11-15 22:26:13,328 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:26:13,328 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:26:13,328 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040493527] [2019-11-15 22:26:13,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:26:13,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:26:13,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:26:13,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:26:13,329 INFO L87 Difference]: Start difference. First operand 227 states and 314 transitions. Second operand 5 states. [2019-11-15 22:26:13,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:26:13,427 INFO L93 Difference]: Finished difference Result 680 states and 933 transitions. [2019-11-15 22:26:13,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:26:13,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2019-11-15 22:26:13,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:26:13,432 INFO L225 Difference]: With dead ends: 680 [2019-11-15 22:26:13,432 INFO L226 Difference]: Without dead ends: 459 [2019-11-15 22:26:13,433 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:26:13,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2019-11-15 22:26:13,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 242. [2019-11-15 22:26:13,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2019-11-15 22:26:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 329 transitions. [2019-11-15 22:26:13,461 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 329 transitions. Word has length 51 [2019-11-15 22:26:13,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:26:13,462 INFO L462 AbstractCegarLoop]: Abstraction has 242 states and 329 transitions. [2019-11-15 22:26:13,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:26:13,462 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 329 transitions. [2019-11-15 22:26:13,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-15 22:26:13,463 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:26:13,464 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:26:13,464 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:26:13,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:26:13,465 INFO L82 PathProgramCache]: Analyzing trace with hash -85798159, now seen corresponding path program 1 times [2019-11-15 22:26:13,465 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:26:13,465 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388494460] [2019-11-15 22:26:13,466 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:13,466 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:13,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:26:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:26:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-15 22:26:13,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388494460] [2019-11-15 22:26:13,528 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:26:13,528 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:26:13,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225614477] [2019-11-15 22:26:13,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:26:13,529 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:26:13,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:26:13,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:26:13,530 INFO L87 Difference]: Start difference. First operand 242 states and 329 transitions. Second operand 4 states. [2019-11-15 22:26:13,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:26:13,645 INFO L93 Difference]: Finished difference Result 560 states and 760 transitions. [2019-11-15 22:26:13,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:26:13,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-11-15 22:26:13,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:26:13,648 INFO L225 Difference]: With dead ends: 560 [2019-11-15 22:26:13,648 INFO L226 Difference]: Without dead ends: 324 [2019-11-15 22:26:13,649 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:26:13,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2019-11-15 22:26:13,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 211. [2019-11-15 22:26:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2019-11-15 22:26:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 282 transitions. [2019-11-15 22:26:13,670 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 282 transitions. Word has length 51 [2019-11-15 22:26:13,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:26:13,671 INFO L462 AbstractCegarLoop]: Abstraction has 211 states and 282 transitions. [2019-11-15 22:26:13,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:26:13,671 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 282 transitions. [2019-11-15 22:26:13,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-15 22:26:13,672 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:26:13,672 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:26:13,673 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:26:13,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:26:13,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1687322796, now seen corresponding path program 1 times [2019-11-15 22:26:13,673 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:26:13,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866971160] [2019-11-15 22:26:13,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:13,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:13,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:26:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:26:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:26:13,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866971160] [2019-11-15 22:26:13,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720760658] [2019-11-15 22:26:13,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:26:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:26:13,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:26:13,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:26:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:26:13,920 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:26:13,921 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-15 22:26:13,922 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311319994] [2019-11-15 22:26:13,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:26:13,923 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:26:13,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:26:13,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:26:13,924 INFO L87 Difference]: Start difference. First operand 211 states and 282 transitions. Second operand 6 states. [2019-11-15 22:26:14,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:26:14,114 INFO L93 Difference]: Finished difference Result 598 states and 816 transitions. [2019-11-15 22:26:14,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 22:26:14,115 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2019-11-15 22:26:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:26:14,118 INFO L225 Difference]: With dead ends: 598 [2019-11-15 22:26:14,118 INFO L226 Difference]: Without dead ends: 435 [2019-11-15 22:26:14,119 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:26:14,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2019-11-15 22:26:14,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 274. [2019-11-15 22:26:14,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2019-11-15 22:26:14,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 365 transitions. [2019-11-15 22:26:14,157 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 365 transitions. Word has length 53 [2019-11-15 22:26:14,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:26:14,158 INFO L462 AbstractCegarLoop]: Abstraction has 274 states and 365 transitions. [2019-11-15 22:26:14,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:26:14,158 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 365 transitions. [2019-11-15 22:26:14,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-15 22:26:14,160 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:26:14,160 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:26:14,365 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:26:14,365 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:26:14,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:26:14,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1211162538, now seen corresponding path program 2 times [2019-11-15 22:26:14,366 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:26:14,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840871370] [2019-11-15 22:26:14,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:14,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:26:14,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:26:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:26:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:26:15,310 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:26:15,310 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 22:26:15,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:26:15 BoogieIcfgContainer [2019-11-15 22:26:15,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:26:15,481 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:26:15,481 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:26:15,482 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:26:15,482 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:26:11" (3/4) ... [2019-11-15 22:26:15,485 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 22:26:15,663 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_af14c9e8-3808-4102-9acc-81e5e55c3a23/bin/uautomizer/witness.graphml [2019-11-15 22:26:15,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:26:15,665 INFO L168 Benchmark]: Toolchain (without parser) took 6162.81 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 221.2 MB). Free memory was 943.4 MB in the beginning and 856.1 MB in the end (delta: 87.3 MB). Peak memory consumption was 308.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:26:15,665 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 966.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:26:15,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 942.1 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:26:15,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:26:15,667 INFO L168 Benchmark]: Boogie Preprocessor took 58.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:26:15,667 INFO L168 Benchmark]: RCFGBuilder took 1092.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 71.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:26:15,668 INFO L168 Benchmark]: TraceAbstraction took 4167.42 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 87.6 MB). Free memory was 1.0 GB in the beginning and 889.8 MB in the end (delta: 145.9 MB). Peak memory consumption was 233.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:26:15,668 INFO L168 Benchmark]: Witness Printer took 182.15 ms. Allocated memory is still 1.3 GB. Free memory was 889.8 MB in the beginning and 856.1 MB in the end (delta: 33.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:26:15,670 INFO L335 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 1.0 GB. Free memory is still 966.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 554.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 942.1 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 104.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 58.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1092.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 71.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4167.42 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 87.6 MB). Free memory was 1.0 GB in the beginning and 889.8 MB in the end (delta: 145.9 MB). Peak memory consumption was 233.5 MB. Max. memory is 11.5 GB. * Witness Printer took 182.15 ms. Allocated memory is still 1.3 GB. Free memory was 889.8 MB in the beginning and 856.1 MB in the end (delta: 33.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L556] int pumpRunning = 0; [L557] int systemActive = 1; [L774] int waterLevel = 1; [L775] int methaneLevelCritical = 0; [L525] int retValue_acc ; [L526] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L963] int retValue_acc ; [L966] retValue_acc = 1 [L967] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L532] tmp = valid_product() [L534] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L869] int splverifierCounter ; [L870] int tmp ; [L871] int tmp___0 ; [L872] int tmp___1 ; [L873] int tmp___2 ; [L876] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L878] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L880] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L886] tmp = __VERIFIER_nondet_int() [L888] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L792] COND TRUE waterLevel < 2 [L793] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L896] tmp___0 = __VERIFIER_nondet_int() [L898] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L906] tmp___2 = __VERIFIER_nondet_int() [L908] COND TRUE \read(tmp___2) [L769] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L563] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L570] COND TRUE \read(systemActive) [L618] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L621] COND FALSE !(\read(pumpRunning)) [L592] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L595] COND TRUE ! pumpRunning [L732] int retValue_acc ; [L733] int tmp ; [L734] int tmp___0 ; [L854] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L857] COND FALSE !(waterLevel < 2) [L861] retValue_acc = 0 [L862] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L738] tmp = isHighWaterSensorDry() [L740] COND FALSE !(\read(tmp)) [L743] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L745] retValue_acc = tmp___0 [L746] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L597] tmp = isHighWaterLevel() [L599] COND TRUE \read(tmp) [L651] int tmp ; [L676] int retValue_acc ; [L813] int retValue_acc ; [L816] retValue_acc = methaneLevelCritical [L817] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L680] retValue_acc = isMethaneLevelCritical() [L682] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L655] tmp = isMethaneAlarm() [L657] COND FALSE !(\read(tmp)) [L646] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; [L845] int retValue_acc ; [L848] retValue_acc = waterLevel [L849] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L878] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L880] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L886] tmp = __VERIFIER_nondet_int() [L888] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L896] tmp___0 = __VERIFIER_nondet_int() [L898] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L906] tmp___2 = __VERIFIER_nondet_int() [L908] COND TRUE \read(tmp___2) [L769] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L563] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L780] COND TRUE waterLevel > 0 [L781] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L570] COND TRUE \read(systemActive) [L618] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L621] COND TRUE \read(pumpRunning) [L676] int retValue_acc ; [L813] int retValue_acc ; [L816] retValue_acc = methaneLevelCritical [L817] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L680] retValue_acc = isMethaneLevelCritical() [L682] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L623] tmp = isMethaneAlarm() [L625] COND FALSE !(\read(tmp)) [L592] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L595] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L44] int tmp ; [L45] int tmp___0 ; [L845] int retValue_acc ; [L848] retValue_acc = waterLevel [L849] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L878] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L880] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L886] tmp = __VERIFIER_nondet_int() [L888] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L896] tmp___0 = __VERIFIER_nondet_int() [L898] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L906] tmp___2 = __VERIFIER_nondet_int() [L908] COND TRUE \read(tmp___2) [L769] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L563] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L780] COND TRUE waterLevel > 0 [L781] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L570] COND TRUE \read(systemActive) [L618] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L621] COND TRUE \read(pumpRunning) [L676] int retValue_acc ; [L813] int retValue_acc ; [L816] retValue_acc = methaneLevelCritical [L817] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L680] retValue_acc = isMethaneLevelCritical() [L682] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L623] tmp = isMethaneAlarm() [L625] COND FALSE !(\read(tmp)) [L592] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L595] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L44] int tmp ; [L45] int tmp___0 ; [L845] int retValue_acc ; [L848] retValue_acc = waterLevel [L849] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L687] int retValue_acc ; [L690] retValue_acc = pumpRunning [L691] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L439] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 3 error locations. Result: UNSAFE, OverallTime: 4.0s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1025 SDtfs, 1698 SDslu, 1733 SDs, 0 SdLazy, 278 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1084 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 425 NumberOfCodeBlocks, 425 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 343 ConstructedInterpolants, 0 QuantifiedInterpolants, 26367 SizeOfPredicates, 4 NumberOfNonLiveVariables, 413 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 65/71 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...