./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 944b52f1c750b2b149a29532cc6e317483d681a8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-28 02:57:12,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:12,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:12,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:12,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:12,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:12,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:12,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:12,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:12,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:12,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:12,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:12,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:12,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:12,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:12,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:12,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:12,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:12,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:12,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:12,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:12,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:12,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:12,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:12,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:12,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:12,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:12,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:12,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:12,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:12,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:12,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:12,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:12,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:12,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:12,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:12,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:12,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:12,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:12,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:12,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:12,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:12,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:12,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:12,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:12,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:12,981 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:12,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:12,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:12,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:12,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:12,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:12,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:12,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:12,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:12,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:12,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:12,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:12,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:12,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:12,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:12,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:12,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:12,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:12,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:12,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:12,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:12,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:12,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:12,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:12,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:12,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 944b52f1c750b2b149a29532cc6e317483d681a8 [2020-11-28 02:57:13,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:13,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:13,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:13,355 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:13,356 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:13,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2020-11-28 02:57:13,439 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer/data/d698eacd8/8a668fa8fcbb44cd9fa1973d3bf8e88a/FLAGe567c2f47 [2020-11-28 02:57:14,031 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:14,032 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2020-11-28 02:57:14,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer/data/d698eacd8/8a668fa8fcbb44cd9fa1973d3bf8e88a/FLAGe567c2f47 [2020-11-28 02:57:14,326 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer/data/d698eacd8/8a668fa8fcbb44cd9fa1973d3bf8e88a [2020-11-28 02:57:14,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:14,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:14,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:14,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:14,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:14,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e70fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14, skipping insertion in model container [2020-11-28 02:57:14,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:14,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:14,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:14,716 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:14,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:14,864 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:14,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14 WrapperNode [2020-11-28 02:57:14,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:14,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:14,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:14,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:14,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:14,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:14,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:14,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:15,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:15,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:15,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:15,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:15,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:15,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:15,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:15,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:15,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:15,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:15,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:15,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/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 [2020-11-28 02:57:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:15,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:15,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:15,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:16,323 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:16,323 INFO L298 CfgBuilder]: Removed 166 assume(true) statements. [2020-11-28 02:57:16,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:16 BoogieIcfgContainer [2020-11-28 02:57:16,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:16,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:16,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:16,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:16,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:14" (1/3) ... [2020-11-28 02:57:16,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3d2bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:16, skipping insertion in model container [2020-11-28 02:57:16,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (2/3) ... [2020-11-28 02:57:16,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3d2bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:16, skipping insertion in model container [2020-11-28 02:57:16,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:16" (3/3) ... [2020-11-28 02:57:16,334 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-11-28 02:57:16,345 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:16,350 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 02:57:16,362 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 02:57:16,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:16,387 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:16,387 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:16,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:16,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:16,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:16,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:16,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-11-28 02:57:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:57:16,408 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:16,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:16,409 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:16,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:16,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1368208383, now seen corresponding path program 1 times [2020-11-28 02:57:16,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:16,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607437076] [2020-11-28 02:57:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:16,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607437076] [2020-11-28 02:57:16,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:16,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:16,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146308949] [2020-11-28 02:57:16,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:57:16,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:16,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:57:16,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:57:16,682 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-11-28 02:57:16,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:16,739 INFO L93 Difference]: Finished difference Result 223 states and 338 transitions. [2020-11-28 02:57:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:57:16,740 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-28 02:57:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:16,757 INFO L225 Difference]: With dead ends: 223 [2020-11-28 02:57:16,757 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 02:57:16,770 INFO L677 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 [2020-11-28 02:57:16,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 02:57:16,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-28 02:57:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-28 02:57:16,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-11-28 02:57:16,829 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-11-28 02:57:16,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:16,830 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-11-28 02:57:16,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:57:16,831 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-11-28 02:57:16,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:57:16,834 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:16,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:16,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:16,835 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:16,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1880002016, now seen corresponding path program 1 times [2020-11-28 02:57:16,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:16,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257996281] [2020-11-28 02:57:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:17,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257996281] [2020-11-28 02:57:17,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:17,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:17,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040934534] [2020-11-28 02:57:17,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:17,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:17,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:17,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:17,016 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2020-11-28 02:57:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:17,028 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-11-28 02:57:17,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:17,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 02:57:17,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:17,035 INFO L225 Difference]: With dead ends: 109 [2020-11-28 02:57:17,035 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 02:57:17,037 INFO L677 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 [2020-11-28 02:57:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 02:57:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-28 02:57:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 02:57:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-11-28 02:57:17,042 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-11-28 02:57:17,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:17,042 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-11-28 02:57:17,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-11-28 02:57:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:57:17,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:17,046 INFO L422 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] [2020-11-28 02:57:17,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:57:17,047 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:17,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:17,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1744081540, now seen corresponding path program 1 times [2020-11-28 02:57:17,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:17,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86165605] [2020-11-28 02:57:17,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:17,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86165605] [2020-11-28 02:57:17,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:17,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:57:17,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859481495] [2020-11-28 02:57:17,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:17,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:17,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:17,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:17,167 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 6 states. [2020-11-28 02:57:17,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:17,382 INFO L93 Difference]: Finished difference Result 152 states and 226 transitions. [2020-11-28 02:57:17,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:17,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-28 02:57:17,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:17,387 INFO L225 Difference]: With dead ends: 152 [2020-11-28 02:57:17,387 INFO L226 Difference]: Without dead ends: 111 [2020-11-28 02:57:17,388 INFO L677 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 [2020-11-28 02:57:17,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-28 02:57:17,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 66. [2020-11-28 02:57:17,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 02:57:17,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2020-11-28 02:57:17,409 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2020-11-28 02:57:17,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:17,410 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2020-11-28 02:57:17,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:17,410 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2020-11-28 02:57:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 02:57:17,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:17,412 INFO L422 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] [2020-11-28 02:57:17,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:57:17,414 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:17,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:17,414 INFO L82 PathProgramCache]: Analyzing trace with hash -595366227, now seen corresponding path program 1 times [2020-11-28 02:57:17,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:17,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497450221] [2020-11-28 02:57:17,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:17,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497450221] [2020-11-28 02:57:17,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:17,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:17,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700870067] [2020-11-28 02:57:17,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:17,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:17,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:17,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:17,527 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand 3 states. [2020-11-28 02:57:17,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:17,589 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2020-11-28 02:57:17,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:17,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-28 02:57:17,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:17,591 INFO L225 Difference]: With dead ends: 147 [2020-11-28 02:57:17,591 INFO L226 Difference]: Without dead ends: 87 [2020-11-28 02:57:17,592 INFO L677 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 [2020-11-28 02:57:17,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-28 02:57:17,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-11-28 02:57:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-28 02:57:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2020-11-28 02:57:17,610 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2020-11-28 02:57:17,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:17,610 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2020-11-28 02:57:17,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:17,610 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2020-11-28 02:57:17,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:57:17,612 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:17,613 INFO L422 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] [2020-11-28 02:57:17,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:57:17,613 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:17,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:17,614 INFO L82 PathProgramCache]: Analyzing trace with hash 566175321, now seen corresponding path program 1 times [2020-11-28 02:57:17,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:17,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197577618] [2020-11-28 02:57:17,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:17,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197577618] [2020-11-28 02:57:17,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:17,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:17,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905754214] [2020-11-28 02:57:17,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:17,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:17,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:17,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:17,740 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 5 states. [2020-11-28 02:57:17,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:17,855 INFO L93 Difference]: Finished difference Result 301 states and 436 transitions. [2020-11-28 02:57:17,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:17,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-28 02:57:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:17,857 INFO L225 Difference]: With dead ends: 301 [2020-11-28 02:57:17,858 INFO L226 Difference]: Without dead ends: 222 [2020-11-28 02:57:17,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:57:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-11-28 02:57:17,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 144. [2020-11-28 02:57:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-28 02:57:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 200 transitions. [2020-11-28 02:57:17,897 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 200 transitions. Word has length 25 [2020-11-28 02:57:17,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:17,898 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 200 transitions. [2020-11-28 02:57:17,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:17,898 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 200 transitions. [2020-11-28 02:57:17,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 02:57:17,902 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:17,903 INFO L422 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] [2020-11-28 02:57:17,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:57:17,903 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:17,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:17,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1393133669, now seen corresponding path program 1 times [2020-11-28 02:57:17,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:17,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4064015] [2020-11-28 02:57:17,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:17,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:17,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4064015] [2020-11-28 02:57:17,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:17,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:17,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707819536] [2020-11-28 02:57:17,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:17,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:17,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:17,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:17,996 INFO L87 Difference]: Start difference. First operand 144 states and 200 transitions. Second operand 5 states. [2020-11-28 02:57:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:18,151 INFO L93 Difference]: Finished difference Result 297 states and 421 transitions. [2020-11-28 02:57:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:57:18,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-28 02:57:18,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:18,154 INFO L225 Difference]: With dead ends: 297 [2020-11-28 02:57:18,154 INFO L226 Difference]: Without dead ends: 295 [2020-11-28 02:57:18,154 INFO L677 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 [2020-11-28 02:57:18,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-11-28 02:57:18,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 144. [2020-11-28 02:57:18,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-28 02:57:18,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 198 transitions. [2020-11-28 02:57:18,175 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 198 transitions. Word has length 26 [2020-11-28 02:57:18,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:18,176 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 198 transitions. [2020-11-28 02:57:18,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:18,176 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 198 transitions. [2020-11-28 02:57:18,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 02:57:18,177 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:18,177 INFO L422 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] [2020-11-28 02:57:18,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:57:18,178 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:18,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:18,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1756729668, now seen corresponding path program 1 times [2020-11-28 02:57:18,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:18,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799530237] [2020-11-28 02:57:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:18,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799530237] [2020-11-28 02:57:18,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:18,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:18,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025437162] [2020-11-28 02:57:18,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:18,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:18,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:18,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:18,221 INFO L87 Difference]: Start difference. First operand 144 states and 198 transitions. Second operand 4 states. [2020-11-28 02:57:18,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:18,411 INFO L93 Difference]: Finished difference Result 295 states and 413 transitions. [2020-11-28 02:57:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:18,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-28 02:57:18,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:18,413 INFO L225 Difference]: With dead ends: 295 [2020-11-28 02:57:18,413 INFO L226 Difference]: Without dead ends: 216 [2020-11-28 02:57:18,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:18,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-28 02:57:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2020-11-28 02:57:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-11-28 02:57:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 293 transitions. [2020-11-28 02:57:18,433 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 293 transitions. Word has length 31 [2020-11-28 02:57:18,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:18,434 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 293 transitions. [2020-11-28 02:57:18,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 293 transitions. [2020-11-28 02:57:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 02:57:18,437 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:18,437 INFO L422 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] [2020-11-28 02:57:18,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:57:18,438 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:18,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:18,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1498564230, now seen corresponding path program 1 times [2020-11-28 02:57:18,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:18,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362310324] [2020-11-28 02:57:18,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:18,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362310324] [2020-11-28 02:57:18,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:18,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:18,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342632771] [2020-11-28 02:57:18,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:18,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:18,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:18,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:18,501 INFO L87 Difference]: Start difference. First operand 213 states and 293 transitions. Second operand 4 states. [2020-11-28 02:57:18,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:18,589 INFO L93 Difference]: Finished difference Result 635 states and 886 transitions. [2020-11-28 02:57:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:18,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-28 02:57:18,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:18,593 INFO L225 Difference]: With dead ends: 635 [2020-11-28 02:57:18,593 INFO L226 Difference]: Without dead ends: 486 [2020-11-28 02:57:18,594 INFO L677 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 [2020-11-28 02:57:18,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-11-28 02:57:18,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 213. [2020-11-28 02:57:18,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-11-28 02:57:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 291 transitions. [2020-11-28 02:57:18,625 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 291 transitions. Word has length 31 [2020-11-28 02:57:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:18,627 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 291 transitions. [2020-11-28 02:57:18,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 291 transitions. [2020-11-28 02:57:18,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 02:57:18,628 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:18,629 INFO L422 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] [2020-11-28 02:57:18,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:57:18,629 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:18,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:18,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1891591240, now seen corresponding path program 1 times [2020-11-28 02:57:18,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:18,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015871777] [2020-11-28 02:57:18,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:18,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015871777] [2020-11-28 02:57:18,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:18,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:57:18,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964509885] [2020-11-28 02:57:18,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:18,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:18,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:18,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:18,713 INFO L87 Difference]: Start difference. First operand 213 states and 291 transitions. Second operand 5 states. [2020-11-28 02:57:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:18,888 INFO L93 Difference]: Finished difference Result 460 states and 638 transitions. [2020-11-28 02:57:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:18,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-28 02:57:18,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:18,891 INFO L225 Difference]: With dead ends: 460 [2020-11-28 02:57:18,891 INFO L226 Difference]: Without dead ends: 311 [2020-11-28 02:57:18,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:57:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-11-28 02:57:18,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 239. [2020-11-28 02:57:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-11-28 02:57:18,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 329 transitions. [2020-11-28 02:57:18,916 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 329 transitions. Word has length 31 [2020-11-28 02:57:18,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:18,917 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 329 transitions. [2020-11-28 02:57:18,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:18,918 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 329 transitions. [2020-11-28 02:57:18,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-28 02:57:18,921 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:18,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:18,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:57:18,922 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:18,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:18,923 INFO L82 PathProgramCache]: Analyzing trace with hash 728455000, now seen corresponding path program 1 times [2020-11-28 02:57:18,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:18,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013218032] [2020-11-28 02:57:18,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 02:57:19,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013218032] [2020-11-28 02:57:19,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:19,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:57:19,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389679835] [2020-11-28 02:57:19,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:19,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:19,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:19,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:19,009 INFO L87 Difference]: Start difference. First operand 239 states and 329 transitions. Second operand 5 states. [2020-11-28 02:57:19,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:19,131 INFO L93 Difference]: Finished difference Result 733 states and 1010 transitions. [2020-11-28 02:57:19,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:19,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-11-28 02:57:19,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:19,137 INFO L225 Difference]: With dead ends: 733 [2020-11-28 02:57:19,137 INFO L226 Difference]: Without dead ends: 500 [2020-11-28 02:57:19,138 INFO L677 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 [2020-11-28 02:57:19,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-28 02:57:19,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 248. [2020-11-28 02:57:19,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-11-28 02:57:19,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 338 transitions. [2020-11-28 02:57:19,169 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 338 transitions. Word has length 49 [2020-11-28 02:57:19,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:19,169 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 338 transitions. [2020-11-28 02:57:19,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:19,170 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 338 transitions. [2020-11-28 02:57:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-28 02:57:19,170 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:19,171 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:19,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:57:19,173 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:19,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:19,173 INFO L82 PathProgramCache]: Analyzing trace with hash 2114658394, now seen corresponding path program 1 times [2020-11-28 02:57:19,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:19,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313357245] [2020-11-28 02:57:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 02:57:19,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313357245] [2020-11-28 02:57:19,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:19,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:57:19,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209427864] [2020-11-28 02:57:19,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:19,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:19,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:19,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:19,242 INFO L87 Difference]: Start difference. First operand 248 states and 338 transitions. Second operand 6 states. [2020-11-28 02:57:19,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:19,352 INFO L93 Difference]: Finished difference Result 584 states and 796 transitions. [2020-11-28 02:57:19,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:19,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-11-28 02:57:19,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:19,355 INFO L225 Difference]: With dead ends: 584 [2020-11-28 02:57:19,355 INFO L226 Difference]: Without dead ends: 342 [2020-11-28 02:57:19,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:57:19,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-11-28 02:57:19,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 216. [2020-11-28 02:57:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-28 02:57:19,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 288 transitions. [2020-11-28 02:57:19,384 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 288 transitions. Word has length 49 [2020-11-28 02:57:19,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:19,384 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 288 transitions. [2020-11-28 02:57:19,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 288 transitions. [2020-11-28 02:57:19,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-28 02:57:19,385 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:19,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:19,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 02:57:19,386 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:19,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:19,387 INFO L82 PathProgramCache]: Analyzing trace with hash 451206174, now seen corresponding path program 1 times [2020-11-28 02:57:19,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:19,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140790371] [2020-11-28 02:57:19,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:19,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140790371] [2020-11-28 02:57:19,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755739875] [2020-11-28 02:57:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:19,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:57:19,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:19,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:57:19,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-28 02:57:19,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291890785] [2020-11-28 02:57:19,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:19,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:19,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:19,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:19,759 INFO L87 Difference]: Start difference. First operand 216 states and 288 transitions. Second operand 6 states. [2020-11-28 02:57:20,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:20,076 INFO L93 Difference]: Finished difference Result 608 states and 825 transitions. [2020-11-28 02:57:20,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:57:20,076 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-11-28 02:57:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:20,079 INFO L225 Difference]: With dead ends: 608 [2020-11-28 02:57:20,079 INFO L226 Difference]: Without dead ends: 446 [2020-11-28 02:57:20,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:57:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-11-28 02:57:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 262. [2020-11-28 02:57:20,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-11-28 02:57:20,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 349 transitions. [2020-11-28 02:57:20,124 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 349 transitions. Word has length 50 [2020-11-28 02:57:20,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:20,125 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 349 transitions. [2020-11-28 02:57:20,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 349 transitions. [2020-11-28 02:57:20,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-28 02:57:20,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:20,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:20,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 02:57:20,351 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:20,351 INFO L82 PathProgramCache]: Analyzing trace with hash -992737800, now seen corresponding path program 2 times [2020-11-28 02:57:20,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:20,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121828655] [2020-11-28 02:57:20,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:20,472 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:20,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:20,632 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:20,636 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:57:20,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 02:57:20,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:20 BoogieIcfgContainer [2020-11-28 02:57:20,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:20,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:20,817 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:20,817 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:20,818 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:16" (3/4) ... [2020-11-28 02:57:20,821 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:57:20,993 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1a6afd27-deed-4d10-aaab-111769c6ab6a/bin/uautomizer/witness.graphml [2020-11-28 02:57:20,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:20,995 INFO L168 Benchmark]: Toolchain (without parser) took 6663.82 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 90.7 MB in the beginning and 44.3 MB in the end (delta: 46.4 MB). Peak memory consumption was 72.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:20,996 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory was 40.6 MB in the beginning and 40.5 MB in the end (delta: 41.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:20,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 534.50 ms. Allocated memory is still 119.5 MB. Free memory was 90.7 MB in the beginning and 86.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:20,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.88 ms. Allocated memory is still 119.5 MB. Free memory was 86.5 MB in the beginning and 82.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:20,998 INFO L168 Benchmark]: Boogie Preprocessor took 86.58 ms. Allocated memory is still 119.5 MB. Free memory was 82.7 MB in the beginning and 80.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:20,998 INFO L168 Benchmark]: RCFGBuilder took 1245.79 ms. Allocated memory is still 119.5 MB. Free memory was 80.2 MB in the beginning and 94.0 MB in the end (delta: -13.8 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:20,999 INFO L168 Benchmark]: TraceAbstraction took 4489.20 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 93.5 MB in the beginning and 71.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:20,999 INFO L168 Benchmark]: Witness Printer took 177.07 ms. Allocated memory is still 144.7 MB. Free memory was 71.6 MB in the beginning and 44.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:21,001 INFO L339 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 81.8 MB. Free memory was 40.6 MB in the beginning and 40.5 MB in the end (delta: 41.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 534.50 ms. Allocated memory is still 119.5 MB. Free memory was 90.7 MB in the beginning and 86.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 123.88 ms. Allocated memory is still 119.5 MB. Free memory was 86.5 MB in the beginning and 82.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.58 ms. Allocated memory is still 119.5 MB. Free memory was 82.7 MB in the beginning and 80.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1245.79 ms. Allocated memory is still 119.5 MB. Free memory was 80.2 MB in the beginning and 94.0 MB in the end (delta: -13.8 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4489.20 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 93.5 MB in the beginning and 71.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. * Witness Printer took 177.07 ms. Allocated memory is still 144.7 MB. Free memory was 71.6 MB in the beginning and 44.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int pumpRunning = 0; [L527] int systemActive = 1; [L730] int waterLevel = 1; [L731] int methaneLevelCritical = 0; [L824] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L897] int retValue_acc ; [L898] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L452] int splverifierCounter ; [L453] int tmp ; [L454] int tmp___0 ; [L455] int tmp___1 ; [L456] int tmp___2 ; [L459] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L469] tmp = __VERIFIER_nondet_int() [L471] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L748] COND TRUE waterLevel < 2 [L749] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L534] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L592] COND FALSE !(\read(pumpRunning)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L566] COND TRUE ! pumpRunning [L686] int retValue_acc ; [L687] int tmp ; [L688] int tmp___0 ; [L810] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L813] COND FALSE !(waterLevel < 2) [L817] retValue_acc = 0 [L818] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L692] tmp = isHighWaterSensorDry() [L694] COND FALSE !(\read(tmp)) [L697] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L699] retValue_acc = tmp___0 [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L568] tmp = isHighWaterLevel() [L570] COND TRUE \read(tmp) [L617] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L469] tmp = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L534] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L736] COND TRUE waterLevel > 0 [L737] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L592] COND TRUE \read(pumpRunning) [L630] int retValue_acc ; [L769] int retValue_acc ; [L772] retValue_acc = methaneLevelCritical [L773] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L634] retValue_acc = isMethaneLevelCritical() [L636] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L594] tmp = isMethaneAlarm() [L596] COND FALSE !(\read(tmp)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L566] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L469] tmp = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L534] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L736] COND TRUE waterLevel > 0 [L737] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L592] COND TRUE \read(pumpRunning) [L630] int retValue_acc ; [L769] int retValue_acc ; [L772] retValue_acc = methaneLevelCritical [L773] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L634] retValue_acc = isMethaneLevelCritical() [L636] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L594] tmp = isMethaneAlarm() [L596] COND FALSE !(\read(tmp)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L566] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L926] tmp = getWaterLevel() [L928] COND TRUE tmp == 0 [L641] int retValue_acc ; [L644] retValue_acc = pumpRunning [L645] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L930] tmp___0 = isPumpRunning() [L932] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product39.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 116 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.2s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1314 SDtfs, 1698 SDslu, 2060 SDs, 0 SdLazy, 309 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 1186 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 26477 SizeOfPredicates, 4 NumberOfNonLiveVariables, 416 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 50/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...