./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product55.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_9a421516-ab9e-4d1d-896a-0df60b5b5c81/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9a421516-ab9e-4d1d-896a-0df60b5b5c81/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9a421516-ab9e-4d1d-896a-0df60b5b5c81/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9a421516-ab9e-4d1d-896a-0df60b5b5c81/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9a421516-ab9e-4d1d-896a-0df60b5b5c81/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9a421516-ab9e-4d1d-896a-0df60b5b5c81/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 f98010979adc33ea49508c52e1057d4173359b78 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 08:57:27,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:57:27,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:57:27,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:57:27,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:57:27,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:57:27,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:57:27,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:57:27,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:57:27,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:57:27,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:57:27,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:57:27,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:57:27,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:57:27,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:57:27,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:57:27,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:57:27,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:57:27,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:57:27,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:57:27,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:57:27,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:57:27,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:57:27,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:57:27,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:57:27,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:57:27,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:57:27,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:57:27,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:57:27,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:57:27,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:57:27,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:57:27,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:57:27,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:57:27,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:57:27,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:57:27,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:57:27,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:57:27,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:57:27,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:57:27,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:57:27,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9a421516-ab9e-4d1d-896a-0df60b5b5c81/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:57:27,963 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:57:27,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:57:27,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:57:27,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:57:27,965 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:57:27,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:57:27,965 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:57:27,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:57:27,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:57:27,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:57:27,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:57:27,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:57:27,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:57:27,967 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:57:27,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:57:27,968 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:57:27,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:57:27,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:57:27,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:57:27,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:57:27,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:57:27,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:57:27,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:57:27,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:57:27,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:57:27,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:57:27,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:57:27,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:57:27,971 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_9a421516-ab9e-4d1d-896a-0df60b5b5c81/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 -> f98010979adc33ea49508c52e1057d4173359b78 [2019-11-25 08:57:28,136 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:57:28,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:57:28,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:57:28,154 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:57:28,155 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:57:28,156 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9a421516-ab9e-4d1d-896a-0df60b5b5c81/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c [2019-11-25 08:57:28,212 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a421516-ab9e-4d1d-896a-0df60b5b5c81/bin/uautomizer/data/da0f76239/15466bb720f043c5a9c5128be6a79ccb/FLAG7b8e70a5d [2019-11-25 08:57:28,699 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:57:28,712 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9a421516-ab9e-4d1d-896a-0df60b5b5c81/sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c [2019-11-25 08:57:28,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a421516-ab9e-4d1d-896a-0df60b5b5c81/bin/uautomizer/data/da0f76239/15466bb720f043c5a9c5128be6a79ccb/FLAG7b8e70a5d [2019-11-25 08:57:29,026 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9a421516-ab9e-4d1d-896a-0df60b5b5c81/bin/uautomizer/data/da0f76239/15466bb720f043c5a9c5128be6a79ccb [2019-11-25 08:57:29,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:57:29,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:57:29,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:57:29,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:57:29,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:57:29,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:57:29" (1/1) ... [2019-11-25 08:57:29,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7e641a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:29, skipping insertion in model container [2019-11-25 08:57:29,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:57:29" (1/1) ... [2019-11-25 08:57:29,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:57:29,090 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:57:29,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:57:29,425 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:57:29,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:57:29,532 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:57:29,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:29 WrapperNode [2019-11-25 08:57:29,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:57:29,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:57:29,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:57:29,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:57:29,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:29" (1/1) ... [2019-11-25 08:57:29,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:29" (1/1) ... [2019-11-25 08:57:29,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:57:29,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:57:29,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:57:29,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:57:29,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:29" (1/1) ... [2019-11-25 08:57:29,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:29" (1/1) ... [2019-11-25 08:57:29,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:29" (1/1) ... [2019-11-25 08:57:29,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:29" (1/1) ... [2019-11-25 08:57:29,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:29" (1/1) ... [2019-11-25 08:57:29,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:29" (1/1) ... [2019-11-25 08:57:29,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:29" (1/1) ... [2019-11-25 08:57:29,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:57:29,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:57:29,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:57:29,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:57:29,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a421516-ab9e-4d1d-896a-0df60b5b5c81/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 08:57:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:57:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-25 08:57:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:57:29,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:57:30,912 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:57:30,913 INFO L284 CfgBuilder]: Removed 280 assume(true) statements. [2019-11-25 08:57:30,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:30 BoogieIcfgContainer [2019-11-25 08:57:30,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:57:30,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:57:30,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:57:30,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:57:30,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:57:29" (1/3) ... [2019-11-25 08:57:30,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7c9861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:57:30, skipping insertion in model container [2019-11-25 08:57:30,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:29" (2/3) ... [2019-11-25 08:57:30,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7c9861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:57:30, skipping insertion in model container [2019-11-25 08:57:30,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:30" (3/3) ... [2019-11-25 08:57:30,922 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2019-11-25 08:57:30,931 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:57:30,941 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-25 08:57:30,952 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-25 08:57:30,988 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:57:30,988 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:57:30,988 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:57:30,989 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:57:30,990 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:57:30,990 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:57:30,991 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:57:30,991 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:57:31,018 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2019-11-25 08:57:31,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:57:31,026 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:31,027 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:31,028 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:31,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:31,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1084846627, now seen corresponding path program 1 times [2019-11-25 08:57:31,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:31,042 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799392411] [2019-11-25 08:57:31,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:31,319 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 08:57:31,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799392411] [2019-11-25 08:57:31,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:31,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:57:31,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822171506] [2019-11-25 08:57:31,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:57:31,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:31,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:57:31,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:57:31,340 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 2 states. [2019-11-25 08:57:31,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:31,375 INFO L93 Difference]: Finished difference Result 376 states and 575 transitions. [2019-11-25 08:57:31,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:57:31,376 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-25 08:57:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:31,388 INFO L225 Difference]: With dead ends: 376 [2019-11-25 08:57:31,388 INFO L226 Difference]: Without dead ends: 187 [2019-11-25 08:57:31,392 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 08:57:31,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2019-11-25 08:57:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2019-11-25 08:57:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2019-11-25 08:57:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 279 transitions. [2019-11-25 08:57:31,441 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 279 transitions. Word has length 16 [2019-11-25 08:57:31,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:31,441 INFO L462 AbstractCegarLoop]: Abstraction has 187 states and 279 transitions. [2019-11-25 08:57:31,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:57:31,441 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 279 transitions. [2019-11-25 08:57:31,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-25 08:57:31,442 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:31,443 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 08:57:31,443 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:31,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:31,443 INFO L82 PathProgramCache]: Analyzing trace with hash 38089730, now seen corresponding path program 1 times [2019-11-25 08:57:31,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:31,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748155808] [2019-11-25 08:57:31,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:31,531 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 08:57:31,532 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748155808] [2019-11-25 08:57:31,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:31,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:57:31,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044963216] [2019-11-25 08:57:31,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:57:31,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:31,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:57:31,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:57:31,534 INFO L87 Difference]: Start difference. First operand 187 states and 279 transitions. Second operand 3 states. [2019-11-25 08:57:31,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:31,558 INFO L93 Difference]: Finished difference Result 187 states and 279 transitions. [2019-11-25 08:57:31,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:57:31,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-25 08:57:31,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:31,559 INFO L225 Difference]: With dead ends: 187 [2019-11-25 08:57:31,560 INFO L226 Difference]: Without dead ends: 73 [2019-11-25 08:57:31,561 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 08:57:31,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-25 08:57:31,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2019-11-25 08:57:31,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-25 08:57:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2019-11-25 08:57:31,568 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 17 [2019-11-25 08:57:31,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:31,568 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2019-11-25 08:57:31,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:57:31,569 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2019-11-25 08:57:31,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:57:31,570 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:31,570 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 08:57:31,570 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:31,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:31,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1082167242, now seen corresponding path program 1 times [2019-11-25 08:57:31,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:31,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621693470] [2019-11-25 08:57:31,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:31,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621693470] [2019-11-25 08:57:31,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:31,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:57:31,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84602414] [2019-11-25 08:57:31,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:57:31,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:31,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:57:31,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:57:31,657 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand 6 states. [2019-11-25 08:57:31,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:31,802 INFO L93 Difference]: Finished difference Result 230 states and 346 transitions. [2019-11-25 08:57:31,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:57:31,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-25 08:57:31,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:31,805 INFO L225 Difference]: With dead ends: 230 [2019-11-25 08:57:31,805 INFO L226 Difference]: Without dead ends: 163 [2019-11-25 08:57:31,806 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 08:57:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2019-11-25 08:57:31,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 92. [2019-11-25 08:57:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-25 08:57:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 137 transitions. [2019-11-25 08:57:31,830 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 137 transitions. Word has length 22 [2019-11-25 08:57:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:31,830 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 137 transitions. [2019-11-25 08:57:31,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:57:31,830 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 137 transitions. [2019-11-25 08:57:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:57:31,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:31,832 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 08:57:31,832 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:31,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1933185311, now seen corresponding path program 1 times [2019-11-25 08:57:31,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:31,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56339552] [2019-11-25 08:57:31,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:31,886 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 08:57:31,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56339552] [2019-11-25 08:57:31,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:31,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:57:31,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754504536] [2019-11-25 08:57:31,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:57:31,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:31,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:57:31,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:57:31,889 INFO L87 Difference]: Start difference. First operand 92 states and 137 transitions. Second operand 3 states. [2019-11-25 08:57:31,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:31,934 INFO L93 Difference]: Finished difference Result 187 states and 280 transitions. [2019-11-25 08:57:31,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:57:31,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-25 08:57:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:31,936 INFO L225 Difference]: With dead ends: 187 [2019-11-25 08:57:31,936 INFO L226 Difference]: Without dead ends: 101 [2019-11-25 08:57:31,937 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 08:57:31,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-25 08:57:31,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2019-11-25 08:57:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-25 08:57:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 141 transitions. [2019-11-25 08:57:31,947 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 141 transitions. Word has length 25 [2019-11-25 08:57:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:31,948 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 141 transitions. [2019-11-25 08:57:31,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:57:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 141 transitions. [2019-11-25 08:57:31,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:57:31,949 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:31,949 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 08:57:31,949 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:31,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:31,950 INFO L82 PathProgramCache]: Analyzing trace with hash 2034893835, now seen corresponding path program 1 times [2019-11-25 08:57:31,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:31,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061600760] [2019-11-25 08:57:31,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:32,047 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 08:57:32,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061600760] [2019-11-25 08:57:32,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:32,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:57:32,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593863881] [2019-11-25 08:57:32,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:57:32,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:32,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:57:32,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:57:32,049 INFO L87 Difference]: Start difference. First operand 99 states and 141 transitions. Second operand 5 states. [2019-11-25 08:57:32,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:32,233 INFO L93 Difference]: Finished difference Result 281 states and 403 transitions. [2019-11-25 08:57:32,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:57:32,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-25 08:57:32,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:32,235 INFO L225 Difference]: With dead ends: 281 [2019-11-25 08:57:32,236 INFO L226 Difference]: Without dead ends: 279 [2019-11-25 08:57:32,236 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 08:57:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2019-11-25 08:57:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 99. [2019-11-25 08:57:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-25 08:57:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 139 transitions. [2019-11-25 08:57:32,257 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 139 transitions. Word has length 25 [2019-11-25 08:57:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:32,258 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 139 transitions. [2019-11-25 08:57:32,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:57:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 139 transitions. [2019-11-25 08:57:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-25 08:57:32,260 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:32,260 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 08:57:32,261 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:32,261 INFO L82 PathProgramCache]: Analyzing trace with hash -899676752, now seen corresponding path program 1 times [2019-11-25 08:57:32,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:32,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869594387] [2019-11-25 08:57:32,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:32,367 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 08:57:32,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869594387] [2019-11-25 08:57:32,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:32,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:57:32,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924948255] [2019-11-25 08:57:32,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:57:32,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:32,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:57:32,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:57:32,369 INFO L87 Difference]: Start difference. First operand 99 states and 139 transitions. Second operand 5 states. [2019-11-25 08:57:32,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:32,470 INFO L93 Difference]: Finished difference Result 282 states and 395 transitions. [2019-11-25 08:57:32,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:57:32,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-25 08:57:32,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:32,472 INFO L225 Difference]: With dead ends: 282 [2019-11-25 08:57:32,473 INFO L226 Difference]: Without dead ends: 189 [2019-11-25 08:57:32,474 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 08:57:32,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2019-11-25 08:57:32,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 108. [2019-11-25 08:57:32,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-25 08:57:32,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 148 transitions. [2019-11-25 08:57:32,497 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 148 transitions. Word has length 31 [2019-11-25 08:57:32,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:32,497 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 148 transitions. [2019-11-25 08:57:32,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:57:32,497 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 148 transitions. [2019-11-25 08:57:32,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-25 08:57:32,499 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:32,499 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 08:57:32,499 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:32,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1292703762, now seen corresponding path program 1 times [2019-11-25 08:57:32,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:32,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268027287] [2019-11-25 08:57:32,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:32,600 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 08:57:32,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268027287] [2019-11-25 08:57:32,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:32,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:57:32,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71044980] [2019-11-25 08:57:32,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:57:32,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:32,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:57:32,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:57:32,602 INFO L87 Difference]: Start difference. First operand 108 states and 148 transitions. Second operand 4 states. [2019-11-25 08:57:32,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:32,663 INFO L93 Difference]: Finished difference Result 266 states and 364 transitions. [2019-11-25 08:57:32,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:57:32,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-11-25 08:57:32,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:32,665 INFO L225 Difference]: With dead ends: 266 [2019-11-25 08:57:32,665 INFO L226 Difference]: Without dead ends: 164 [2019-11-25 08:57:32,666 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 [2019-11-25 08:57:32,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-11-25 08:57:32,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 114. [2019-11-25 08:57:32,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-11-25 08:57:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 154 transitions. [2019-11-25 08:57:32,680 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 154 transitions. Word has length 31 [2019-11-25 08:57:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:32,681 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 154 transitions. [2019-11-25 08:57:32,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:57:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 154 transitions. [2019-11-25 08:57:32,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-25 08:57:32,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:32,685 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 08:57:32,685 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:32,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:32,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1034538324, now seen corresponding path program 1 times [2019-11-25 08:57:32,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:32,686 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027497557] [2019-11-25 08:57:32,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:32,746 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 08:57:32,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027497557] [2019-11-25 08:57:32,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:32,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:57:32,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741406783] [2019-11-25 08:57:32,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:57:32,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:32,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:57:32,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:57:32,748 INFO L87 Difference]: Start difference. First operand 114 states and 154 transitions. Second operand 3 states. [2019-11-25 08:57:32,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:32,780 INFO L93 Difference]: Finished difference Result 269 states and 365 transitions. [2019-11-25 08:57:32,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:57:32,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-11-25 08:57:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:32,783 INFO L225 Difference]: With dead ends: 269 [2019-11-25 08:57:32,783 INFO L226 Difference]: Without dead ends: 161 [2019-11-25 08:57:32,783 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 08:57:32,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-11-25 08:57:32,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2019-11-25 08:57:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2019-11-25 08:57:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 214 transitions. [2019-11-25 08:57:32,799 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 214 transitions. Word has length 31 [2019-11-25 08:57:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:32,799 INFO L462 AbstractCegarLoop]: Abstraction has 161 states and 214 transitions. [2019-11-25 08:57:32,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:57:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 214 transitions. [2019-11-25 08:57:32,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-25 08:57:32,805 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:32,805 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 08:57:32,806 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:32,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:32,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1147669102, now seen corresponding path program 1 times [2019-11-25 08:57:32,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:32,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721182684] [2019-11-25 08:57:32,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:32,913 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 08:57:32,913 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721182684] [2019-11-25 08:57:32,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:32,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:57:32,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440278725] [2019-11-25 08:57:32,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:57:32,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:32,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:57:32,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:57:32,915 INFO L87 Difference]: Start difference. First operand 161 states and 214 transitions. Second operand 5 states. [2019-11-25 08:57:33,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:33,066 INFO L93 Difference]: Finished difference Result 818 states and 1098 transitions. [2019-11-25 08:57:33,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:57:33,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-11-25 08:57:33,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:33,071 INFO L225 Difference]: With dead ends: 818 [2019-11-25 08:57:33,071 INFO L226 Difference]: Without dead ends: 663 [2019-11-25 08:57:33,072 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 08:57:33,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2019-11-25 08:57:33,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 304. [2019-11-25 08:57:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2019-11-25 08:57:33,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 400 transitions. [2019-11-25 08:57:33,110 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 400 transitions. Word has length 32 [2019-11-25 08:57:33,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:33,111 INFO L462 AbstractCegarLoop]: Abstraction has 304 states and 400 transitions. [2019-11-25 08:57:33,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:57:33,111 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 400 transitions. [2019-11-25 08:57:33,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-25 08:57:33,115 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:33,115 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 08:57:33,115 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:33,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:33,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1539369524, now seen corresponding path program 1 times [2019-11-25 08:57:33,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:33,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697002242] [2019-11-25 08:57:33,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:33,266 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:33,267 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:57:33,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:57:33 BoogieIcfgContainer [2019-11-25 08:57:33,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:57:33,361 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:57:33,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:57:33,361 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:57:33,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:30" (3/4) ... [2019-11-25 08:57:33,364 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:57:33,499 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9a421516-ab9e-4d1d-896a-0df60b5b5c81/bin/uautomizer/witness.graphml [2019-11-25 08:57:33,500 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:57:33,501 INFO L168 Benchmark]: Toolchain (without parser) took 4470.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 946.1 MB in the beginning and 1.0 GB in the end (delta: -61.1 MB). Peak memory consumption was 104.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:33,502 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:57:33,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -203.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:33,504 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.51 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. [2019-11-25 08:57:33,505 INFO L168 Benchmark]: Boogie Preprocessor took 103.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:33,505 INFO L168 Benchmark]: RCFGBuilder took 1180.84 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: 86.9 MB). Peak memory consumption was 86.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:33,505 INFO L168 Benchmark]: TraceAbstraction took 2446.08 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:33,507 INFO L168 Benchmark]: Witness Printer took 138.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:33,510 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 502.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -203.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 95.51 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 103.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1180.84 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: 86.9 MB). Peak memory consumption was 86.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2446.08 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. * Witness Printer took 138.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L159] int pumpRunning = 0; [L160] int systemActive = 1; [L399] int waterLevel = 1; [L400] int methaneLevelCritical = 0; [L511] int cleanupTimeShifts = 4; [L802] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L584] int retValue_acc ; [L585] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L591] tmp = valid_product() [L593] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L84] int splverifierCounter ; [L85] int tmp ; [L86] int tmp___0 ; [L87] int tmp___1 ; [L88] int tmp___2 ; [L91] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L93] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L95] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L101] tmp = __VERIFIER_nondet_int() [L103] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L417] COND TRUE waterLevel < 2 [L418] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L111] tmp___0 = __VERIFIER_nondet_int() [L113] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L429] COND FALSE !(\read(methaneLevelCritical)) [L432] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L121] tmp___2 = __VERIFIER_nondet_int() [L123] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L167] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L174] COND TRUE \read(systemActive) [L248] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L251] COND FALSE !(\read(pumpRunning)) [L222] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L225] COND FALSE !(\read(pumpRunning)) [L196] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L199] COND TRUE ! pumpRunning [L345] int retValue_acc ; [L346] int tmp ; [L347] int tmp___0 ; [L479] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L482] COND FALSE !(waterLevel < 2) [L486] retValue_acc = 0 [L487] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L351] tmp = isHighWaterSensorDry() [L353] COND FALSE !(\read(tmp)) [L356] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L358] retValue_acc = tmp___0 [L359] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L201] tmp = isHighWaterLevel() [L203] COND TRUE \read(tmp) [L276] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L608] int tmp ; [L609] int tmp___0 ; [L438] int retValue_acc ; [L441] retValue_acc = methaneLevelCritical [L442] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L613] tmp = isMethaneLevelCritical() [L615] COND TRUE \read(tmp) [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L617] tmp___0 = isPumpRunning() [L619] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L506] __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, 191 locations, 3 error locations. Result: UNSAFE, OverallTime: 2.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1183 SDtfs, 1480 SDslu, 1720 SDs, 0 SdLazy, 217 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=304occurred 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, 743 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 263 NumberOfCodeBlocks, 263 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 15338 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...