./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/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 c24c1e7ee4ec00cdeabebf427b1fca35e12bb483 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.24-6b5699a [2019-11-25 08:47:31,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:47:31,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:47:31,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:47:31,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:47:31,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:47:31,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:47:31,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:47:31,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:47:31,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:47:31,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:47:31,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:47:31,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:47:31,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:47:31,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:47:31,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:47:31,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:47:31,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:47:31,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:47:31,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:47:31,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:47:31,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:47:31,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:47:31,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:47:31,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:47:31,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:47:31,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:47:31,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:47:31,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:47:31,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:47:31,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:47:31,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:47:31,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:47:31,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:47:31,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:47:31,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:47:31,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:47:31,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:47:31,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:47:31,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:47:31,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:47:31,957 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:47:31,980 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:47:31,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:47:31,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:47:31,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:47:31,981 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:47:31,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:47:31,981 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:47:31,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:47:31,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:47:31,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:47:31,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:47:31,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:47:31,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:47:31,983 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:47:31,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:47:31,983 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:47:31,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:47:31,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:47:31,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:47:31,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:47:31,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:47:31,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:47:31,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:47:31,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:47:31,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:47:31,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:47:31,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:47:31,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:47:31,985 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_8d0bffb2-6219-4ea4-a977-8f7646ed7538/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 -> c24c1e7ee4ec00cdeabebf427b1fca35e12bb483 [2019-11-25 08:47:32,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:47:32,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:47:32,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:47:32,149 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:47:32,150 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:47:32,150 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2019-11-25 08:47:32,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/bin/uautomizer/data/8da2dc1a6/8064d466eb254ca7b3aa5f8c83604717/FLAGe81a8e36e [2019-11-25 08:47:32,632 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:47:32,632 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2019-11-25 08:47:32,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/bin/uautomizer/data/8da2dc1a6/8064d466eb254ca7b3aa5f8c83604717/FLAGe81a8e36e [2019-11-25 08:47:32,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/bin/uautomizer/data/8da2dc1a6/8064d466eb254ca7b3aa5f8c83604717 [2019-11-25 08:47:32,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:47:32,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:47:32,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:32,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:47:32,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:47:32,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:32" (1/1) ... [2019-11-25 08:47:32,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43664afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:32, skipping insertion in model container [2019-11-25 08:47:32,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:32" (1/1) ... [2019-11-25 08:47:32,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:47:32,715 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:47:33,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:33,066 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:47:33,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:33,173 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:47:33,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:33 WrapperNode [2019-11-25 08:47:33,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:33,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:33,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:47:33,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:47:33,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:33" (1/1) ... [2019-11-25 08:47:33,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:33" (1/1) ... [2019-11-25 08:47:33,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:33,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:47:33,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:47:33,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:47:33,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:33" (1/1) ... [2019-11-25 08:47:33,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:33" (1/1) ... [2019-11-25 08:47:33,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:33" (1/1) ... [2019-11-25 08:47:33,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:33" (1/1) ... [2019-11-25 08:47:33,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:33" (1/1) ... [2019-11-25 08:47:33,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:33" (1/1) ... [2019-11-25 08:47:33,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:33" (1/1) ... [2019-11-25 08:47:33,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:47:33,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:47:33,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:47:33,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:47:33,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:47:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:47:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-25 08:47:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:47:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:47:34,358 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:47:34,358 INFO L284 CfgBuilder]: Removed 276 assume(true) statements. [2019-11-25 08:47:34,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:34 BoogieIcfgContainer [2019-11-25 08:47:34,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:47:34,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:47:34,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:47:34,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:47:34,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:47:32" (1/3) ... [2019-11-25 08:47:34,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b37d078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:34, skipping insertion in model container [2019-11-25 08:47:34,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:33" (2/3) ... [2019-11-25 08:47:34,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b37d078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:34, skipping insertion in model container [2019-11-25 08:47:34,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:34" (3/3) ... [2019-11-25 08:47:34,371 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2019-11-25 08:47:34,380 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:47:34,387 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-25 08:47:34,397 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-25 08:47:34,425 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:47:34,425 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:47:34,425 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:47:34,425 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:47:34,430 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:47:34,431 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:47:34,431 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:47:34,431 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:47:34,461 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-11-25 08:47:34,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:47:34,470 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:34,471 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:34,472 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:34,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:34,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2002794138, now seen corresponding path program 1 times [2019-11-25 08:47:34,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:34,487 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956386704] [2019-11-25 08:47:34,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:34,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956386704] [2019-11-25 08:47:34,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:34,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:47:34,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13430557] [2019-11-25 08:47:34,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:47:34,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:34,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:47:34,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:47:34,790 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 2 states. [2019-11-25 08:47:34,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:34,839 INFO L93 Difference]: Finished difference Result 372 states and 569 transitions. [2019-11-25 08:47:34,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:47:34,841 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-25 08:47:34,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:34,852 INFO L225 Difference]: With dead ends: 372 [2019-11-25 08:47:34,853 INFO L226 Difference]: Without dead ends: 185 [2019-11-25 08:47:34,857 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 [2019-11-25 08:47:34,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-11-25 08:47:34,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2019-11-25 08:47:34,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2019-11-25 08:47:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2019-11-25 08:47:34,914 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 276 transitions. Word has length 16 [2019-11-25 08:47:34,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:34,914 INFO L462 AbstractCegarLoop]: Abstraction has 185 states and 276 transitions. [2019-11-25 08:47:34,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:47:34,915 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 276 transitions. [2019-11-25 08:47:34,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-25 08:47:34,919 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:34,919 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:34,920 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:34,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:34,920 INFO L82 PathProgramCache]: Analyzing trace with hash 956037241, now seen corresponding path program 1 times [2019-11-25 08:47:34,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:34,921 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226745181] [2019-11-25 08:47:34,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:35,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226745181] [2019-11-25 08:47:35,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:35,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:47:35,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815658545] [2019-11-25 08:47:35,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:47:35,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:35,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:47:35,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:47:35,008 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. Second operand 3 states. [2019-11-25 08:47:35,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:35,023 INFO L93 Difference]: Finished difference Result 185 states and 276 transitions. [2019-11-25 08:47:35,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:47:35,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-25 08:47:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:35,025 INFO L225 Difference]: With dead ends: 185 [2019-11-25 08:47:35,025 INFO L226 Difference]: Without dead ends: 71 [2019-11-25 08:47:35,026 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 [2019-11-25 08:47:35,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-25 08:47:35,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-11-25 08:47:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-25 08:47:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 105 transitions. [2019-11-25 08:47:35,034 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 105 transitions. Word has length 17 [2019-11-25 08:47:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:35,034 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 105 transitions. [2019-11-25 08:47:35,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:47:35,034 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 105 transitions. [2019-11-25 08:47:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:47:35,035 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:35,036 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] [2019-11-25 08:47:35,036 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:35,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:35,036 INFO L82 PathProgramCache]: Analyzing trace with hash 748559286, now seen corresponding path program 1 times [2019-11-25 08:47:35,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:35,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877341529] [2019-11-25 08:47:35,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:35,139 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877341529] [2019-11-25 08:47:35,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:35,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:47:35,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369864966] [2019-11-25 08:47:35,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:47:35,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:35,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:47:35,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:47:35,141 INFO L87 Difference]: Start difference. First operand 71 states and 105 transitions. Second operand 6 states. [2019-11-25 08:47:35,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:35,240 INFO L93 Difference]: Finished difference Result 136 states and 204 transitions. [2019-11-25 08:47:35,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:47:35,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-25 08:47:35,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:35,243 INFO L225 Difference]: With dead ends: 136 [2019-11-25 08:47:35,244 INFO L226 Difference]: Without dead ends: 71 [2019-11-25 08:47:35,245 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:47:35,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-25 08:47:35,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-11-25 08:47:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-25 08:47:35,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2019-11-25 08:47:35,259 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 22 [2019-11-25 08:47:35,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:35,259 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2019-11-25 08:47:35,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:47:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2019-11-25 08:47:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:47:35,267 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:35,267 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] [2019-11-25 08:47:35,267 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:35,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:35,268 INFO L82 PathProgramCache]: Analyzing trace with hash -682519882, now seen corresponding path program 1 times [2019-11-25 08:47:35,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:35,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660310315] [2019-11-25 08:47:35,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:35,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660310315] [2019-11-25 08:47:35,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:35,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:47:35,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093322021] [2019-11-25 08:47:35,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:47:35,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:35,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:47:35,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:47:35,356 INFO L87 Difference]: Start difference. First operand 71 states and 104 transitions. Second operand 3 states. [2019-11-25 08:47:35,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:35,411 INFO L93 Difference]: Finished difference Result 145 states and 214 transitions. [2019-11-25 08:47:35,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:47:35,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-25 08:47:35,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:35,413 INFO L225 Difference]: With dead ends: 145 [2019-11-25 08:47:35,413 INFO L226 Difference]: Without dead ends: 80 [2019-11-25 08:47:35,414 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 [2019-11-25 08:47:35,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-25 08:47:35,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2019-11-25 08:47:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-25 08:47:35,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2019-11-25 08:47:35,434 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 110 transitions. Word has length 25 [2019-11-25 08:47:35,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:35,435 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 110 transitions. [2019-11-25 08:47:35,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:47:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 110 transitions. [2019-11-25 08:47:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-25 08:47:35,437 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:35,437 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] [2019-11-25 08:47:35,438 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:35,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:35,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1459548505, now seen corresponding path program 1 times [2019-11-25 08:47:35,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:35,439 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636134749] [2019-11-25 08:47:35,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:35,540 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636134749] [2019-11-25 08:47:35,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:35,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:47:35,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163707488] [2019-11-25 08:47:35,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:47:35,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:35,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:47:35,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:47:35,542 INFO L87 Difference]: Start difference. First operand 78 states and 110 transitions. Second operand 5 states. [2019-11-25 08:47:35,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:35,655 INFO L93 Difference]: Finished difference Result 204 states and 285 transitions. [2019-11-25 08:47:35,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:47:35,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-25 08:47:35,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:35,657 INFO L225 Difference]: With dead ends: 204 [2019-11-25 08:47:35,657 INFO L226 Difference]: Without dead ends: 132 [2019-11-25 08:47:35,657 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 [2019-11-25 08:47:35,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-11-25 08:47:35,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2019-11-25 08:47:35,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-25 08:47:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2019-11-25 08:47:35,674 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 31 [2019-11-25 08:47:35,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:35,674 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2019-11-25 08:47:35,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:47:35,675 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2019-11-25 08:47:35,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-25 08:47:35,676 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:35,676 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] [2019-11-25 08:47:35,676 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:35,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:35,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1202962538, now seen corresponding path program 1 times [2019-11-25 08:47:35,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:35,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710389626] [2019-11-25 08:47:35,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:35,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710389626] [2019-11-25 08:47:35,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:35,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:47:35,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095009851] [2019-11-25 08:47:35,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:47:35,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:35,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:47:35,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:47:35,768 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 5 states. [2019-11-25 08:47:35,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:35,871 INFO L93 Difference]: Finished difference Result 431 states and 600 transitions. [2019-11-25 08:47:35,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:47:35,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-25 08:47:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:35,875 INFO L225 Difference]: With dead ends: 431 [2019-11-25 08:47:35,875 INFO L226 Difference]: Without dead ends: 350 [2019-11-25 08:47:35,876 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 [2019-11-25 08:47:35,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2019-11-25 08:47:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 162. [2019-11-25 08:47:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-11-25 08:47:35,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 221 transitions. [2019-11-25 08:47:35,897 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 221 transitions. Word has length 31 [2019-11-25 08:47:35,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:35,897 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 221 transitions. [2019-11-25 08:47:35,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:47:35,897 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 221 transitions. [2019-11-25 08:47:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-25 08:47:35,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:35,899 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] [2019-11-25 08:47:35,899 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:35,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:35,900 INFO L82 PathProgramCache]: Analyzing trace with hash 552949620, now seen corresponding path program 1 times [2019-11-25 08:47:35,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:35,900 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272898029] [2019-11-25 08:47:35,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:35,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:35,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272898029] [2019-11-25 08:47:35,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:35,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:47:35,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903191361] [2019-11-25 08:47:35,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:47:35,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:35,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:47:35,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:47:35,975 INFO L87 Difference]: Start difference. First operand 162 states and 221 transitions. Second operand 5 states. [2019-11-25 08:47:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:36,134 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2019-11-25 08:47:36,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:47:36,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-11-25 08:47:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:36,138 INFO L225 Difference]: With dead ends: 470 [2019-11-25 08:47:36,138 INFO L226 Difference]: Without dead ends: 468 [2019-11-25 08:47:36,139 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 [2019-11-25 08:47:36,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2019-11-25 08:47:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 162. [2019-11-25 08:47:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-11-25 08:47:36,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 220 transitions. [2019-11-25 08:47:36,168 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 220 transitions. Word has length 32 [2019-11-25 08:47:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:36,169 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 220 transitions. [2019-11-25 08:47:36,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:47:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 220 transitions. [2019-11-25 08:47:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-25 08:47:36,170 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:36,170 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] [2019-11-25 08:47:36,170 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:36,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:36,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1792378863, now seen corresponding path program 1 times [2019-11-25 08:47:36,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:36,172 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819443800] [2019-11-25 08:47:36,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:36,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819443800] [2019-11-25 08:47:36,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:36,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-25 08:47:36,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307464722] [2019-11-25 08:47:36,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:47:36,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:36,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:47:36,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:47:36,249 INFO L87 Difference]: Start difference. First operand 162 states and 220 transitions. Second operand 6 states. [2019-11-25 08:47:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:36,379 INFO L93 Difference]: Finished difference Result 428 states and 574 transitions. [2019-11-25 08:47:36,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:47:36,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-11-25 08:47:36,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:36,381 INFO L225 Difference]: With dead ends: 428 [2019-11-25 08:47:36,381 INFO L226 Difference]: Without dead ends: 272 [2019-11-25 08:47:36,382 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:47:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2019-11-25 08:47:36,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 174. [2019-11-25 08:47:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2019-11-25 08:47:36,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2019-11-25 08:47:36,401 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 32 [2019-11-25 08:47:36,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:36,402 INFO L462 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2019-11-25 08:47:36,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:47:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2019-11-25 08:47:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-25 08:47:36,433 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:36,433 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] [2019-11-25 08:47:36,433 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:36,436 INFO L82 PathProgramCache]: Analyzing trace with hash 2050544301, now seen corresponding path program 1 times [2019-11-25 08:47:36,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:36,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172447483] [2019-11-25 08:47:36,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:36,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172447483] [2019-11-25 08:47:36,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:36,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:47:36,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645954913] [2019-11-25 08:47:36,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:47:36,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:36,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:47:36,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:47:36,490 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand 3 states. [2019-11-25 08:47:36,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:36,534 INFO L93 Difference]: Finished difference Result 394 states and 524 transitions. [2019-11-25 08:47:36,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:47:36,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-11-25 08:47:36,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:36,536 INFO L225 Difference]: With dead ends: 394 [2019-11-25 08:47:36,536 INFO L226 Difference]: Without dead ends: 226 [2019-11-25 08:47:36,537 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 [2019-11-25 08:47:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2019-11-25 08:47:36,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2019-11-25 08:47:36,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2019-11-25 08:47:36,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 294 transitions. [2019-11-25 08:47:36,555 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 294 transitions. Word has length 32 [2019-11-25 08:47:36,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:36,556 INFO L462 AbstractCegarLoop]: Abstraction has 226 states and 294 transitions. [2019-11-25 08:47:36,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:47:36,556 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 294 transitions. [2019-11-25 08:47:36,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-25 08:47:36,561 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:36,561 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, 1] [2019-11-25 08:47:36,561 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:36,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:36,562 INFO L82 PathProgramCache]: Analyzing trace with hash 979497771, now seen corresponding path program 1 times [2019-11-25 08:47:36,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:36,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587212858] [2019-11-25 08:47:36,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:36,735 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:36,735 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:47:36,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:47:36 BoogieIcfgContainer [2019-11-25 08:47:36,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:47:36,826 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:47:36,826 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:47:36,826 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:47:36,827 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:34" (3/4) ... [2019-11-25 08:47:36,830 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:47:36,975 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8d0bffb2-6219-4ea4-a977-8f7646ed7538/bin/uautomizer/witness.graphml [2019-11-25 08:47:36,975 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:47:36,977 INFO L168 Benchmark]: Toolchain (without parser) took 4319.15 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 249.6 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -213.5 MB). Peak memory consumption was 36.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:36,980 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:36,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 516.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.0 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -217.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:36,981 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:36,982 INFO L168 Benchmark]: Boogie Preprocessor took 82.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:36,982 INFO L168 Benchmark]: RCFGBuilder took 1026.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 88.2 MB). Peak memory consumption was 88.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:36,982 INFO L168 Benchmark]: TraceAbstraction took 2465.07 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -117.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:36,983 INFO L168 Benchmark]: Witness Printer took 149.78 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:36,987 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 516.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.0 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -217.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 75.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 82.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1026.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 88.2 MB). Peak memory consumption was 88.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2465.07 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -117.7 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 149.78 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L444] int cleanupTimeShifts = 4; [L554] int pumpRunning = 0; [L555] int systemActive = 1; [L878] int waterLevel = 1; [L879] int methaneLevelCritical = 0; [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L525] int retValue_acc ; [L526] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L868] int retValue_acc ; [L871] retValue_acc = 1 [L872] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L532] tmp = valid_product() [L534] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] int splverifierCounter ; [L779] int tmp ; [L780] int tmp___0 ; [L781] int tmp___1 ; [L782] int tmp___2 ; [L785] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L787] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L789] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L795] tmp = __VERIFIER_nondet_int() [L797] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L896] COND TRUE waterLevel < 2 [L897] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L805] tmp___0 = __VERIFIER_nondet_int() [L807] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L908] COND FALSE !(\read(methaneLevelCritical)) [L911] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L815] tmp___2 = __VERIFIER_nondet_int() [L817] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L561] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L568] 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 FALSE !(\read(pumpRunning)) [L590] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L593] COND TRUE ! pumpRunning [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L958] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L961] COND FALSE !(waterLevel < 2) [L965] retValue_acc = 0 [L966] 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] [L595] tmp = isHighWaterLevel() [L597] COND TRUE \read(tmp) [L670] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = isMethaneLevelCritical() [L51] 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] [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L73] __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, 189 locations, 3 error locations. Result: UNSAFE, OverallTime: 2.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1135 SDtfs, 1663 SDslu, 1257 SDs, 0 SdLazy, 203 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 639 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 271 NumberOfCodeBlocks, 271 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 13180 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...