./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product55.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/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product55.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/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 07b1c242ee38ca5843c5ca9be19cecfe3ff6bd0c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2019-10-22 08:58:53,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:53,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:53,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:53,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:53,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:53,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:53,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:53,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:53,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:53,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:53,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:53,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:53,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:53,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:53,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:53,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:53,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:53,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:53,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:53,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:53,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:53,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:54,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:54,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:54,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:54,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:54,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:54,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:54,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:54,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:54,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:54,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:54,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:54,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:54,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:54,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:54,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:54,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:54,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:54,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:54,011 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:58:54,024 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:54,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:54,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:54,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:54,025 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:54,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:54,025 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:58:54,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:54,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:58:54,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:54,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:58:54,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:58:54,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:58:54,026 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:58:54,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:58:54,027 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:54,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:58:54,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:54,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:54,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:58:54,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:58:54,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:58:54,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:54,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:58:54,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:58:54,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:54,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:58:54,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:58:54,038 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/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/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 -> 07b1c242ee38ca5843c5ca9be19cecfe3ff6bd0c [2019-10-22 08:58:54,075 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:54,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:54,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:54,092 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:54,092 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:54,093 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product55.cil.c [2019-10-22 08:58:54,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/bin/uautomizer/data/72c56324e/05a889a7f4c2478e9caceecc128d7a80/FLAGae38e9259 [2019-10-22 08:58:54,542 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:54,549 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/sv-benchmarks/c/product-lines/minepump_spec3_product55.cil.c [2019-10-22 08:58:54,560 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/bin/uautomizer/data/72c56324e/05a889a7f4c2478e9caceecc128d7a80/FLAGae38e9259 [2019-10-22 08:58:54,874 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/bin/uautomizer/data/72c56324e/05a889a7f4c2478e9caceecc128d7a80 [2019-10-22 08:58:54,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:54,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:58:54,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:54,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:54,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:54,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:54" (1/1) ... [2019-10-22 08:58:54,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5faea8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:54, skipping insertion in model container [2019-10-22 08:58:54,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:54" (1/1) ... [2019-10-22 08:58:54,894 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:54,934 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:55,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:55,334 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:55,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:55,436 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:55,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:55 WrapperNode [2019-10-22 08:58:55,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:55,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:55,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:58:55,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:58:55,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:55" (1/1) ... [2019-10-22 08:58:55,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:55" (1/1) ... [2019-10-22 08:58:55,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:55,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:55,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:55,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:55,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:55" (1/1) ... [2019-10-22 08:58:55,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:55" (1/1) ... [2019-10-22 08:58:55,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:55" (1/1) ... [2019-10-22 08:58:55,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:55" (1/1) ... [2019-10-22 08:58:55,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:55" (1/1) ... [2019-10-22 08:58:55,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:55" (1/1) ... [2019-10-22 08:58:55,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:55" (1/1) ... [2019-10-22 08:58:55,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:55,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:55,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:55,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:55,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/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 [2019-10-22 08:58:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:58:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 08:58:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:55,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:56,607 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:56,607 INFO L284 CfgBuilder]: Removed 286 assume(true) statements. [2019-10-22 08:58:56,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:56 BoogieIcfgContainer [2019-10-22 08:58:56,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:56,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:58:56,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:58:56,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:58:56,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:58:54" (1/3) ... [2019-10-22 08:58:56,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70283103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:56, skipping insertion in model container [2019-10-22 08:58:56,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:55" (2/3) ... [2019-10-22 08:58:56,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70283103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:56, skipping insertion in model container [2019-10-22 08:58:56,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:56" (3/3) ... [2019-10-22 08:58:56,620 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product55.cil.c [2019-10-22 08:58:56,652 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:58:56,664 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 08:58:56,674 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 08:58:56,696 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:58:56,703 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:58:56,703 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:58:56,711 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:56,711 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:56,711 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:58:56,711 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:56,712 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:58:56,741 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2019-10-22 08:58:56,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 08:58:56,755 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:56,756 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:56,757 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:56,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:56,771 INFO L82 PathProgramCache]: Analyzing trace with hash -477478196, now seen corresponding path program 1 times [2019-10-22 08:58:56,788 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:56,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143931096] [2019-10-22 08:58:56,789 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:56,789 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:56,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:56,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143931096] [2019-10-22 08:58:56,978 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:56,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:58:56,979 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543095821] [2019-10-22 08:58:56,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:58:56,983 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:56,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:58:56,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:58:56,993 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2019-10-22 08:58:57,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:57,039 INFO L93 Difference]: Finished difference Result 388 states and 593 transitions. [2019-10-22 08:58:57,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:58:57,040 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-22 08:58:57,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:57,051 INFO L225 Difference]: With dead ends: 388 [2019-10-22 08:58:57,052 INFO L226 Difference]: Without dead ends: 193 [2019-10-22 08:58:57,055 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 [2019-10-22 08:58:57,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-10-22 08:58:57,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2019-10-22 08:58:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-10-22 08:58:57,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 288 transitions. [2019-10-22 08:58:57,100 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 288 transitions. Word has length 18 [2019-10-22 08:58:57,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:57,101 INFO L462 AbstractCegarLoop]: Abstraction has 193 states and 288 transitions. [2019-10-22 08:58:57,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:58:57,101 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 288 transitions. [2019-10-22 08:58:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:58:57,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:57,102 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:57,102 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:57,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:57,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1388508949, now seen corresponding path program 1 times [2019-10-22 08:58:57,103 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:57,103 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189234359] [2019-10-22 08:58:57,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:57,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189234359] [2019-10-22 08:58:57,184 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:57,184 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:58:57,185 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616846894] [2019-10-22 08:58:57,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:58:57,186 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:57,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:58:57,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:58:57,187 INFO L87 Difference]: Start difference. First operand 193 states and 288 transitions. Second operand 3 states. [2019-10-22 08:58:57,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:57,205 INFO L93 Difference]: Finished difference Result 193 states and 288 transitions. [2019-10-22 08:58:57,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:58:57,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 08:58:57,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:57,207 INFO L225 Difference]: With dead ends: 193 [2019-10-22 08:58:57,207 INFO L226 Difference]: Without dead ends: 75 [2019-10-22 08:58:57,208 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 [2019-10-22 08:58:57,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-10-22 08:58:57,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2019-10-22 08:58:57,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-10-22 08:58:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions. [2019-10-22 08:58:57,214 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 111 transitions. Word has length 19 [2019-10-22 08:58:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:57,214 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 111 transitions. [2019-10-22 08:58:57,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:58:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 111 transitions. [2019-10-22 08:58:57,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 08:58:57,216 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:57,216 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] [2019-10-22 08:58:57,216 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:57,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:57,216 INFO L82 PathProgramCache]: Analyzing trace with hash -521457096, now seen corresponding path program 1 times [2019-10-22 08:58:57,217 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:57,217 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521754177] [2019-10-22 08:58:57,217 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,217 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:57,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521754177] [2019-10-22 08:58:57,293 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:57,293 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:58:57,294 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087801793] [2019-10-22 08:58:57,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:58:57,294 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:57,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:58:57,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:58:57,295 INFO L87 Difference]: Start difference. First operand 75 states and 111 transitions. Second operand 3 states. [2019-10-22 08:58:57,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:57,321 INFO L93 Difference]: Finished difference Result 213 states and 321 transitions. [2019-10-22 08:58:57,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:58:57,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 08:58:57,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:57,324 INFO L225 Difference]: With dead ends: 213 [2019-10-22 08:58:57,324 INFO L226 Difference]: Without dead ends: 144 [2019-10-22 08:58:57,325 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 [2019-10-22 08:58:57,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-10-22 08:58:57,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2019-10-22 08:58:57,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-22 08:58:57,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 211 transitions. [2019-10-22 08:58:57,341 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 211 transitions. Word has length 24 [2019-10-22 08:58:57,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:57,341 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 211 transitions. [2019-10-22 08:58:57,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:58:57,342 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 211 transitions. [2019-10-22 08:58:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 08:58:57,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:57,342 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, 1, 1] [2019-10-22 08:58:57,343 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:57,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:57,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1870578463, now seen corresponding path program 1 times [2019-10-22 08:58:57,343 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:57,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124015019] [2019-10-22 08:58:57,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:57,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124015019] [2019-10-22 08:58:57,439 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:57,439 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:58:57,440 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897363417] [2019-10-22 08:58:57,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:58:57,440 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:57,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:58:57,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:58:57,441 INFO L87 Difference]: Start difference. First operand 140 states and 211 transitions. Second operand 3 states. [2019-10-22 08:58:57,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:57,492 INFO L93 Difference]: Finished difference Result 295 states and 448 transitions. [2019-10-22 08:58:57,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:58:57,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-22 08:58:57,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:57,494 INFO L225 Difference]: With dead ends: 295 [2019-10-22 08:58:57,495 INFO L226 Difference]: Without dead ends: 161 [2019-10-22 08:58:57,496 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 [2019-10-22 08:58:57,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-10-22 08:58:57,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2019-10-22 08:58:57,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-10-22 08:58:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 231 transitions. [2019-10-22 08:58:57,519 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 231 transitions. Word has length 27 [2019-10-22 08:58:57,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:57,527 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 231 transitions. [2019-10-22 08:58:57,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:58:57,527 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 231 transitions. [2019-10-22 08:58:57,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 08:58:57,528 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:57,528 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, 1, 1] [2019-10-22 08:58:57,528 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:57,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1382032589, now seen corresponding path program 1 times [2019-10-22 08:58:57,529 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:57,529 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572296914] [2019-10-22 08:58:57,529 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,529 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:57,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572296914] [2019-10-22 08:58:57,605 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:57,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:58:57,605 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576114027] [2019-10-22 08:58:57,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:58:57,606 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:57,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:58:57,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:57,606 INFO L87 Difference]: Start difference. First operand 159 states and 231 transitions. Second operand 5 states. [2019-10-22 08:58:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:57,742 INFO L93 Difference]: Finished difference Result 809 states and 1191 transitions. [2019-10-22 08:58:57,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:58:57,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-10-22 08:58:57,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:57,745 INFO L225 Difference]: With dead ends: 809 [2019-10-22 08:58:57,745 INFO L226 Difference]: Without dead ends: 656 [2019-10-22 08:58:57,746 INFO L600 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 [2019-10-22 08:58:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2019-10-22 08:58:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 252. [2019-10-22 08:58:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2019-10-22 08:58:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 356 transitions. [2019-10-22 08:58:57,771 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 356 transitions. Word has length 27 [2019-10-22 08:58:57,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:57,772 INFO L462 AbstractCegarLoop]: Abstraction has 252 states and 356 transitions. [2019-10-22 08:58:57,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:58:57,772 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 356 transitions. [2019-10-22 08:58:57,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-22 08:58:57,773 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:57,773 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, 1, 1, 1] [2019-10-22 08:58:57,773 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:57,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:57,774 INFO L82 PathProgramCache]: Analyzing trace with hash -318231153, now seen corresponding path program 1 times [2019-10-22 08:58:57,774 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:57,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908305030] [2019-10-22 08:58:57,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:58,379 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:58,380 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:58:58,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:58:58 BoogieIcfgContainer [2019-10-22 08:58:58,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:58:58,454 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:58,454 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:58,454 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:58,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:56" (3/4) ... [2019-10-22 08:58:58,457 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:58:58,527 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_12737890-85c5-45ea-bedb-a8e1d53e0828/bin/uautomizer/witness.graphml [2019-10-22 08:58:58,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:58,529 INFO L168 Benchmark]: Toolchain (without parser) took 3651.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 944.5 MB in the beginning and 1.0 GB in the end (delta: -74.1 MB). Peak memory consumption was 82.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:58,529 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:58,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 558.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -194.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:58,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.57 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:58,530 INFO L168 Benchmark]: Boogie Preprocessor took 90.92 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:58,530 INFO L168 Benchmark]: RCFGBuilder took 1013.88 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: 86.9 MB). Peak memory consumption was 86.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:58,530 INFO L168 Benchmark]: TraceAbstraction took 1844.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:58,531 INFO L168 Benchmark]: Witness Printer took 73.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:58,533 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 558.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -194.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 66.57 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 90.92 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1013.88 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: 86.9 MB). Peak memory consumption was 86.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1844.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 11.5 GB. * Witness Printer took 73.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 193]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L86] int waterLevel = 1; [L87] int methaneLevelCritical = 0; [L367] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L564] int cleanupTimeShifts = 4; [L667] int pumpRunning = 0; [L668] int systemActive = 1; [L640] int retValue_acc ; [L641] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L647] tmp = valid_product() [L649] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L941] int splverifierCounter ; [L942] int tmp ; [L943] int tmp___0 ; [L944] int tmp___1 ; [L945] int tmp___2 ; [L948] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L950] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L952] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L958] tmp = __VERIFIER_nondet_int() [L960] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L104] COND TRUE waterLevel < 2 [L105] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L968] tmp___0 = __VERIFIER_nondet_int() [L970] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L978] tmp___2 = __VERIFIER_nondet_int() [L980] COND FALSE !(\read(tmp___2)) [L984] tmp___1 = __VERIFIER_nondet_int() [L986] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L894] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L901] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L675] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L682] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L907] int tmp ; [L908] int tmp___0 ; [L909] int tmp___1 ; [L125] int retValue_acc ; [L128] retValue_acc = methaneLevelCritical [L129] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L913] tmp = isMethaneLevelCritical() [L915] COND FALSE !(\read(tmp)) [L157] int retValue_acc ; [L160] retValue_acc = waterLevel [L161] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L919] tmp___0 = getWaterLevel() [L921] COND TRUE tmp___0 == 2 [L808] int retValue_acc ; [L811] retValue_acc = pumpRunning [L812] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L923] tmp___1 = isPumpRunning() [L925] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L193] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 197 locations, 3 error locations. Result: UNSAFE, OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 753 SDtfs, 586 SDslu, 523 SDs, 0 SdLazy, 73 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=252occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 410 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 5388 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...