./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/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 a0c13a298b8ef5fea6639223509104e0f4da0801 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:45:02,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:45:02,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:45:02,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:45:02,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:45:02,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:45:02,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:45:02,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:45:02,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:45:02,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:45:02,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:45:02,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:45:02,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:45:02,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:45:02,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:45:02,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:45:02,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:45:02,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:45:02,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:45:02,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:45:02,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:45:02,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:45:02,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:45:02,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:45:02,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:45:02,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:45:02,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:45:02,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:45:02,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:45:02,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:45:02,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:45:02,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:45:02,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:45:02,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:45:02,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:45:02,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:45:02,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:45:02,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:45:02,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:45:02,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:45:02,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:45:02,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 15:45:02,443 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:45:02,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:45:02,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:45:02,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:45:02,444 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:45:02,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:45:02,444 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:45:02,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:45:02,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:45:02,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:45:02,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:45:02,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:45:02,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:45:02,445 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:45:02,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:45:02,446 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:45:02,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:45:02,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:45:02,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:45:02,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:45:02,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:45:02,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:45:02,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:45:02,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:45:02,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:45:02,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:45:02,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:45:02,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:45:02,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:45:02,447 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_38f666d3-fbd0-4daa-baa7-59756afafee6/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 -> a0c13a298b8ef5fea6639223509104e0f4da0801 [2019-12-07 15:45:02,548 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:45:02,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:45:02,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:45:02,562 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:45:02,562 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:45:02,563 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2019-12-07 15:45:02,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/bin/uautomizer/data/ce42c74d3/caec49b64dc14980acb44a98e6ae23c4/FLAG1307ff31e [2019-12-07 15:45:03,030 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:45:03,030 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2019-12-07 15:45:03,038 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/bin/uautomizer/data/ce42c74d3/caec49b64dc14980acb44a98e6ae23c4/FLAG1307ff31e [2019-12-07 15:45:03,371 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/bin/uautomizer/data/ce42c74d3/caec49b64dc14980acb44a98e6ae23c4 [2019-12-07 15:45:03,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:45:03,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:45:03,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:45:03,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:45:03,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:45:03,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:45:03" (1/1) ... [2019-12-07 15:45:03,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a523291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:45:03, skipping insertion in model container [2019-12-07 15:45:03,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:45:03" (1/1) ... [2019-12-07 15:45:03,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:45:03,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:45:03,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:45:03,648 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:45:03,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:45:03,715 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:45:03,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:45:03 WrapperNode [2019-12-07 15:45:03,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:45:03,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:45:03,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:45:03,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:45:03,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:45:03" (1/1) ... [2019-12-07 15:45:03,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:45:03" (1/1) ... [2019-12-07 15:45:03,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:45:03,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:45:03,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:45:03,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:45:03,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:45:03" (1/1) ... [2019-12-07 15:45:03,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:45:03" (1/1) ... [2019-12-07 15:45:03,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:45:03" (1/1) ... [2019-12-07 15:45:03,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:45:03" (1/1) ... [2019-12-07 15:45:03,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:45:03" (1/1) ... [2019-12-07 15:45:03,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:45:03" (1/1) ... [2019-12-07 15:45:03,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:45:03" (1/1) ... [2019-12-07 15:45:03,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:45:03,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:45:03,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:45:03,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:45:03,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:45:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/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 [2019-12-07 15:45:03,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:45:03,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-07 15:45:03,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:45:03,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:45:04,286 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:45:04,287 INFO L287 CfgBuilder]: Removed 158 assume(true) statements. [2019-12-07 15:45:04,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:45:04 BoogieIcfgContainer [2019-12-07 15:45:04,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:45:04,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:45:04,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:45:04,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:45:04,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:45:03" (1/3) ... [2019-12-07 15:45:04,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f33f0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:45:04, skipping insertion in model container [2019-12-07 15:45:04,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:45:03" (2/3) ... [2019-12-07 15:45:04,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f33f0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:45:04, skipping insertion in model container [2019-12-07 15:45:04,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:45:04" (3/3) ... [2019-12-07 15:45:04,293 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2019-12-07 15:45:04,300 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:45:04,305 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 15:45:04,313 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 15:45:04,330 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:45:04,330 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:45:04,330 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:45:04,330 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:45:04,330 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:45:04,331 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:45:04,331 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:45:04,331 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:45:04,344 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2019-12-07 15:45:04,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 15:45:04,348 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:45:04,349 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:45:04,349 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:45:04,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:45:04,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1529342393, now seen corresponding path program 1 times [2019-12-07 15:45:04,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:45:04,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585945218] [2019-12-07 15:45:04,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:45:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:45:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:45:04,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585945218] [2019-12-07 15:45:04,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:45:04,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:45:04,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240522768] [2019-12-07 15:45:04,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:45:04,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:45:04,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:45:04,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:45:04,534 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 2 states. [2019-12-07 15:45:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:45:04,554 INFO L93 Difference]: Finished difference Result 216 states and 329 transitions. [2019-12-07 15:45:04,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:45:04,555 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-12-07 15:45:04,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:45:04,562 INFO L225 Difference]: With dead ends: 216 [2019-12-07 15:45:04,563 INFO L226 Difference]: Without dead ends: 107 [2019-12-07 15:45:04,565 INFO L630 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 [2019-12-07 15:45:04,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-12-07 15:45:04,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2019-12-07 15:45:04,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-12-07 15:45:04,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2019-12-07 15:45:04,594 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2019-12-07 15:45:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:45:04,594 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2019-12-07 15:45:04,594 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:45:04,594 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2019-12-07 15:45:04,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 15:45:04,595 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:45:04,595 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:45:04,595 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:45:04,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:45:04,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1945506518, now seen corresponding path program 1 times [2019-12-07 15:45:04,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:45:04,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442515045] [2019-12-07 15:45:04,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:45:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:45:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:45:04,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442515045] [2019-12-07 15:45:04,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:45:04,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:45:04,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756250945] [2019-12-07 15:45:04,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:45:04,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:45:04,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:45:04,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:45:04,658 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand 3 states. [2019-12-07 15:45:04,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:45:04,667 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2019-12-07 15:45:04,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:45:04,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-07 15:45:04,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:45:04,668 INFO L225 Difference]: With dead ends: 107 [2019-12-07 15:45:04,668 INFO L226 Difference]: Without dead ends: 45 [2019-12-07 15:45:04,669 INFO L630 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 [2019-12-07 15:45:04,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-12-07 15:45:04,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-12-07 15:45:04,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 15:45:04,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2019-12-07 15:45:04,673 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 17 [2019-12-07 15:45:04,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:45:04,673 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2019-12-07 15:45:04,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:45:04,673 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2019-12-07 15:45:04,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 15:45:04,674 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:45:04,674 INFO L410 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] [2019-12-07 15:45:04,674 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:45:04,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:45:04,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1939738244, now seen corresponding path program 1 times [2019-12-07 15:45:04,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:45:04,675 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185231174] [2019-12-07 15:45:04,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:45:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:45:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:45:04,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185231174] [2019-12-07 15:45:04,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:45:04,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 15:45:04,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672107352] [2019-12-07 15:45:04,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:45:04,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:45:04,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:45:04,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:45:04,731 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand 5 states. [2019-12-07 15:45:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:45:04,770 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2019-12-07 15:45:04,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:45:04,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-12-07 15:45:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:45:04,771 INFO L225 Difference]: With dead ends: 84 [2019-12-07 15:45:04,771 INFO L226 Difference]: Without dead ends: 45 [2019-12-07 15:45:04,771 INFO L630 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 [2019-12-07 15:45:04,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-12-07 15:45:04,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-12-07 15:45:04,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 15:45:04,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2019-12-07 15:45:04,776 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 22 [2019-12-07 15:45:04,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:45:04,776 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2019-12-07 15:45:04,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:45:04,777 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2019-12-07 15:45:04,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 15:45:04,777 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:45:04,777 INFO L410 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] [2019-12-07 15:45:04,778 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:45:04,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:45:04,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1547834963, now seen corresponding path program 1 times [2019-12-07 15:45:04,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:45:04,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610936295] [2019-12-07 15:45:04,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:45:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:45:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:45:04,810 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610936295] [2019-12-07 15:45:04,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:45:04,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:45:04,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110344243] [2019-12-07 15:45:04,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:45:04,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:45:04,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:45:04,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:45:04,812 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 3 states. [2019-12-07 15:45:04,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:45:04,835 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2019-12-07 15:45:04,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:45:04,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-12-07 15:45:04,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:45:04,836 INFO L225 Difference]: With dead ends: 105 [2019-12-07 15:45:04,836 INFO L226 Difference]: Without dead ends: 66 [2019-12-07 15:45:04,837 INFO L630 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 [2019-12-07 15:45:04,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-12-07 15:45:04,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2019-12-07 15:45:04,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-12-07 15:45:04,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2019-12-07 15:45:04,842 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 24 [2019-12-07 15:45:04,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:45:04,842 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2019-12-07 15:45:04,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:45:04,843 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2019-12-07 15:45:04,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 15:45:04,843 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:45:04,843 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:45:04,843 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:45:04,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:45:04,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1827782978, now seen corresponding path program 1 times [2019-12-07 15:45:04,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:45:04,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998352445] [2019-12-07 15:45:04,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:45:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:45:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:45:04,881 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998352445] [2019-12-07 15:45:04,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:45:04,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 15:45:04,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227203741] [2019-12-07 15:45:04,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:45:04,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:45:04,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:45:04,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:45:04,883 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand 5 states. [2019-12-07 15:45:04,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:45:04,931 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2019-12-07 15:45:04,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:45:04,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-12-07 15:45:04,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:45:04,932 INFO L225 Difference]: With dead ends: 171 [2019-12-07 15:45:04,932 INFO L226 Difference]: Without dead ends: 113 [2019-12-07 15:45:04,933 INFO L630 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 [2019-12-07 15:45:04,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-12-07 15:45:04,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2019-12-07 15:45:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-12-07 15:45:04,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2019-12-07 15:45:04,940 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 30 [2019-12-07 15:45:04,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:45:04,940 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2019-12-07 15:45:04,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:45:04,940 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2019-12-07 15:45:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 15:45:04,941 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:45:04,941 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:45:04,941 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:45:04,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:45:04,942 INFO L82 PathProgramCache]: Analyzing trace with hash 834728065, now seen corresponding path program 1 times [2019-12-07 15:45:04,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:45:04,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106901386] [2019-12-07 15:45:04,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:45:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:45:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:45:04,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106901386] [2019-12-07 15:45:04,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:45:04,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:45:04,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072361645] [2019-12-07 15:45:04,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:45:04,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:45:04,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:45:04,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:45:04,983 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 5 states. [2019-12-07 15:45:05,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:45:05,055 INFO L93 Difference]: Finished difference Result 344 states and 483 transitions. [2019-12-07 15:45:05,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:45:05,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-12-07 15:45:05,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:45:05,057 INFO L225 Difference]: With dead ends: 344 [2019-12-07 15:45:05,057 INFO L226 Difference]: Without dead ends: 280 [2019-12-07 15:45:05,058 INFO L630 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 [2019-12-07 15:45:05,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2019-12-07 15:45:05,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 128. [2019-12-07 15:45:05,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-12-07 15:45:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 175 transitions. [2019-12-07 15:45:05,072 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 175 transitions. Word has length 30 [2019-12-07 15:45:05,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:45:05,072 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 175 transitions. [2019-12-07 15:45:05,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:45:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 175 transitions. [2019-12-07 15:45:05,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 15:45:05,073 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:45:05,073 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:45:05,074 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:45:05,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:45:05,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1506496567, now seen corresponding path program 1 times [2019-12-07 15:45:05,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:45:05,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357733492] [2019-12-07 15:45:05,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:45:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:45:05,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:45:05,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357733492] [2019-12-07 15:45:05,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:45:05,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:45:05,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687321045] [2019-12-07 15:45:05,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:45:05,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:45:05,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:45:05,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:45:05,113 INFO L87 Difference]: Start difference. First operand 128 states and 175 transitions. Second operand 5 states. [2019-12-07 15:45:05,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:45:05,210 INFO L93 Difference]: Finished difference Result 366 states and 502 transitions. [2019-12-07 15:45:05,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 15:45:05,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-12-07 15:45:05,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:45:05,213 INFO L225 Difference]: With dead ends: 366 [2019-12-07 15:45:05,213 INFO L226 Difference]: Without dead ends: 364 [2019-12-07 15:45:05,214 INFO L630 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 [2019-12-07 15:45:05,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2019-12-07 15:45:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 128. [2019-12-07 15:45:05,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-12-07 15:45:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2019-12-07 15:45:05,230 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 31 [2019-12-07 15:45:05,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:45:05,231 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2019-12-07 15:45:05,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:45:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2019-12-07 15:45:05,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 15:45:05,232 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:45:05,233 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:45:05,233 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:45:05,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:45:05,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1549041486, now seen corresponding path program 1 times [2019-12-07 15:45:05,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:45:05,234 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155217719] [2019-12-07 15:45:05,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:45:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:45:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:45:05,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155217719] [2019-12-07 15:45:05,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:45:05,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:45:05,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865372770] [2019-12-07 15:45:05,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:45:05,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:45:05,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:45:05,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:45:05,272 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand 4 states. [2019-12-07 15:45:05,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:45:05,315 INFO L93 Difference]: Finished difference Result 308 states and 416 transitions. [2019-12-07 15:45:05,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:45:05,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-12-07 15:45:05,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:45:05,316 INFO L225 Difference]: With dead ends: 308 [2019-12-07 15:45:05,317 INFO L226 Difference]: Without dead ends: 186 [2019-12-07 15:45:05,317 INFO L630 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 [2019-12-07 15:45:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-12-07 15:45:05,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 136. [2019-12-07 15:45:05,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-12-07 15:45:05,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 182 transitions. [2019-12-07 15:45:05,327 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 182 transitions. Word has length 31 [2019-12-07 15:45:05,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:45:05,327 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 182 transitions. [2019-12-07 15:45:05,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:45:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 182 transitions. [2019-12-07 15:45:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 15:45:05,328 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:45:05,328 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:45:05,328 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:45:05,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:45:05,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1290876048, now seen corresponding path program 1 times [2019-12-07 15:45:05,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:45:05,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744969607] [2019-12-07 15:45:05,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:45:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:45:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:45:05,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744969607] [2019-12-07 15:45:05,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:45:05,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:45:05,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634558349] [2019-12-07 15:45:05,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:45:05,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:45:05,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:45:05,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:45:05,352 INFO L87 Difference]: Start difference. First operand 136 states and 182 transitions. Second operand 3 states. [2019-12-07 15:45:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:45:05,372 INFO L93 Difference]: Finished difference Result 316 states and 422 transitions. [2019-12-07 15:45:05,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:45:05,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-12-07 15:45:05,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:45:05,373 INFO L225 Difference]: With dead ends: 316 [2019-12-07 15:45:05,373 INFO L226 Difference]: Without dead ends: 186 [2019-12-07 15:45:05,374 INFO L630 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 [2019-12-07 15:45:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-12-07 15:45:05,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2019-12-07 15:45:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2019-12-07 15:45:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 242 transitions. [2019-12-07 15:45:05,383 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 242 transitions. Word has length 31 [2019-12-07 15:45:05,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:45:05,384 INFO L462 AbstractCegarLoop]: Abstraction has 186 states and 242 transitions. [2019-12-07 15:45:05,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:45:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 242 transitions. [2019-12-07 15:45:05,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 15:45:05,384 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:45:05,385 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:45:05,385 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:45:05,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:45:05,385 INFO L82 PathProgramCache]: Analyzing trace with hash 891331378, now seen corresponding path program 1 times [2019-12-07 15:45:05,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:45:05,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145767830] [2019-12-07 15:45:05,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:45:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:45:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:45:05,473 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:45:05,474 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:45:05,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:45:05 BoogieIcfgContainer [2019-12-07 15:45:05,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:45:05,540 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:45:05,540 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:45:05,540 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:45:05,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:45:04" (3/4) ... [2019-12-07 15:45:05,542 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:45:05,600 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_38f666d3-fbd0-4daa-baa7-59756afafee6/bin/uautomizer/witness.graphml [2019-12-07 15:45:05,600 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:45:05,602 INFO L168 Benchmark]: Toolchain (without parser) took 2227.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -112.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:45:05,602 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:45:05,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-12-07 15:45:05,603 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.22 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. [2019-12-07 15:45:05,603 INFO L168 Benchmark]: Boogie Preprocessor took 29.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:45:05,603 INFO L168 Benchmark]: RCFGBuilder took 497.39 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: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:45:05,603 INFO L168 Benchmark]: TraceAbstraction took 1250.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -24.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:45:05,604 INFO L168 Benchmark]: Witness Printer took 60.65 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: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:45:05,605 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 341.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.22 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 29.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 497.39 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: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1250.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -24.2 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 60.65 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: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 837]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L377] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L580] int pumpRunning = 0; [L581] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L776] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___2) [L761] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L587] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L594] COND TRUE \read(systemActive) [L642] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L645] COND FALSE !(\read(pumpRunning)) [L616] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L619] COND TRUE ! pumpRunning [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L923] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L621] tmp = isHighWaterLevel() [L623] COND TRUE \read(tmp) [L670] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L183] int tmp ; [L184] int tmp___0 ; [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L188] tmp = isMethaneLevelCritical() [L190] COND TRUE \read(tmp) [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L192] tmp___0 = isPumpRunning() [L194] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L837] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 111 locations, 3 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 785 SDtfs, 952 SDslu, 964 SDs, 0 SdLazy, 149 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred 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: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 483 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 11571 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...