./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product46.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_9dea22d5-8726-4902-b931-f672f5fba840/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/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 0c528157ad3ccc512d501b1e66086beae537118a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 00:37:46,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:37:46,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:37:46,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:37:46,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:37:46,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:37:46,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:37:46,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:37:46,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:37:46,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:37:46,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:37:46,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:37:46,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:37:46,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:37:46,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:37:46,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:37:46,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:37:46,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:37:46,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:37:47,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:37:47,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:37:47,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:37:47,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:37:47,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:37:47,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:37:47,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:37:47,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:37:47,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:37:47,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:37:47,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:37:47,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:37:47,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:37:47,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:37:47,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:37:47,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:37:47,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:37:47,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:37:47,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:37:47,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:37:47,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:37:47,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:37:47,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:37:47,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:37:47,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:37:47,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:37:47,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:37:47,096 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:37:47,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:37:47,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:37:47,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:37:47,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:37:47,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:37:47,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:37:47,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:37:47,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:37:47,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:37:47,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:37:47,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:37:47,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:37:47,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:37:47,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:37:47,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:37:47,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:37:47,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:37:47,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:37:47,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:37:47,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:37:47,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:37:47,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:37:47,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:37:47,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:37:47,104 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_9dea22d5-8726-4902-b931-f672f5fba840/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c528157ad3ccc512d501b1e66086beae537118a [2020-11-30 00:37:47,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:37:47,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:37:47,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:37:47,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:37:47,446 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:37:47,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2020-11-30 00:37:47,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/bin/uautomizer/data/679453f35/f5dfefbde26b4fea8f679c25f7674bbc/FLAGfc0ab37dc [2020-11-30 00:37:48,176 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:37:48,177 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2020-11-30 00:37:48,190 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/bin/uautomizer/data/679453f35/f5dfefbde26b4fea8f679c25f7674bbc/FLAGfc0ab37dc [2020-11-30 00:37:48,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/bin/uautomizer/data/679453f35/f5dfefbde26b4fea8f679c25f7674bbc [2020-11-30 00:37:48,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:37:48,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:37:48,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:37:48,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:37:48,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:37:48,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:37:48" (1/1) ... [2020-11-30 00:37:48,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46041a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:37:48, skipping insertion in model container [2020-11-30 00:37:48,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:37:48" (1/1) ... [2020-11-30 00:37:48,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:37:48,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:37:49,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:37:49,068 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:37:49,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:37:49,189 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:37:49,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:37:49 WrapperNode [2020-11-30 00:37:49,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:37:49,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:37:49,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:37:49,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:37:49,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:37:49" (1/1) ... [2020-11-30 00:37:49,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:37:49" (1/1) ... [2020-11-30 00:37:49,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:37:49,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:37:49,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:37:49,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:37:49,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:37:49" (1/1) ... [2020-11-30 00:37:49,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:37:49" (1/1) ... [2020-11-30 00:37:49,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:37:49" (1/1) ... [2020-11-30 00:37:49,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:37:49" (1/1) ... [2020-11-30 00:37:49,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:37:49" (1/1) ... [2020-11-30 00:37:49,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:37:49" (1/1) ... [2020-11-30 00:37:49,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:37:49" (1/1) ... [2020-11-30 00:37:49,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:37:49,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:37:49,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:37:49,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:37:49,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:37:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/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 [2020-11-30 00:37:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:37:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:37:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:37:49,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:37:50,961 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:37:50,961 INFO L298 CfgBuilder]: Removed 200 assume(true) statements. [2020-11-30 00:37:50,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:37:50 BoogieIcfgContainer [2020-11-30 00:37:50,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:37:50,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:37:50,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:37:50,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:37:50,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:37:48" (1/3) ... [2020-11-30 00:37:50,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6c0192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:37:50, skipping insertion in model container [2020-11-30 00:37:50,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:37:49" (2/3) ... [2020-11-30 00:37:50,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6c0192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:37:50, skipping insertion in model container [2020-11-30 00:37:50,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:37:50" (3/3) ... [2020-11-30 00:37:50,973 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-11-30 00:37:50,989 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:37:50,994 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 00:37:51,006 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 00:37:51,029 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:37:51,029 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:37:51,030 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:37:51,030 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:37:51,030 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:37:51,030 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:37:51,030 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:37:51,030 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:37:51,053 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-11-30 00:37:51,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:37:51,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:51,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:37:51,065 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:51,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:51,072 INFO L82 PathProgramCache]: Analyzing trace with hash 677139685, now seen corresponding path program 1 times [2020-11-30 00:37:51,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:51,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142336558] [2020-11-30 00:37:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:37:51,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142336558] [2020-11-30 00:37:51,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:37:51,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:37:51,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006600634] [2020-11-30 00:37:51,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:37:51,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:51,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:37:51,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:37:51,509 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 2 states. [2020-11-30 00:37:51,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:51,574 INFO L93 Difference]: Finished difference Result 255 states and 380 transitions. [2020-11-30 00:37:51,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:37:51,575 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-30 00:37:51,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:51,596 INFO L225 Difference]: With dead ends: 255 [2020-11-30 00:37:51,596 INFO L226 Difference]: Without dead ends: 125 [2020-11-30 00:37:51,605 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 [2020-11-30 00:37:51,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-30 00:37:51,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-11-30 00:37:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-30 00:37:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2020-11-30 00:37:51,703 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 16 [2020-11-30 00:37:51,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:51,706 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2020-11-30 00:37:51,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:37:51,707 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2020-11-30 00:37:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:37:51,710 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:51,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:37:51,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:37:51,711 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:51,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:51,715 INFO L82 PathProgramCache]: Analyzing trace with hash -369617212, now seen corresponding path program 1 times [2020-11-30 00:37:51,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:51,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50968229] [2020-11-30 00:37:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:51,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:37:51,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50968229] [2020-11-30 00:37:51,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:37:51,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:37:51,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547013318] [2020-11-30 00:37:51,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:37:51,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:51,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:37:51,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:37:51,902 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. Second operand 3 states. [2020-11-30 00:37:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:51,923 INFO L93 Difference]: Finished difference Result 125 states and 180 transitions. [2020-11-30 00:37:51,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:37:51,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-30 00:37:51,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:51,926 INFO L225 Difference]: With dead ends: 125 [2020-11-30 00:37:51,928 INFO L226 Difference]: Without dead ends: 51 [2020-11-30 00:37:51,930 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 [2020-11-30 00:37:51,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-30 00:37:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-30 00:37:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 00:37:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2020-11-30 00:37:51,942 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 17 [2020-11-30 00:37:51,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:51,943 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2020-11-30 00:37:51,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:37:51,944 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2020-11-30 00:37:51,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:37:51,946 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:51,946 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] [2020-11-30 00:37:51,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:37:51,948 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:51,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:51,950 INFO L82 PathProgramCache]: Analyzing trace with hash 640818778, now seen corresponding path program 1 times [2020-11-30 00:37:51,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:51,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543983803] [2020-11-30 00:37:51,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:37:52,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543983803] [2020-11-30 00:37:52,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:37:52,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:37:52,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779910804] [2020-11-30 00:37:52,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:37:52,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:52,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:37:52,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:37:52,081 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand 3 states. [2020-11-30 00:37:52,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:52,108 INFO L93 Difference]: Finished difference Result 96 states and 140 transitions. [2020-11-30 00:37:52,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:37:52,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-30 00:37:52,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:52,110 INFO L225 Difference]: With dead ends: 96 [2020-11-30 00:37:52,110 INFO L226 Difference]: Without dead ends: 51 [2020-11-30 00:37:52,111 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 [2020-11-30 00:37:52,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-30 00:37:52,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-30 00:37:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 00:37:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2020-11-30 00:37:52,118 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 22 [2020-11-30 00:37:52,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:52,118 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2020-11-30 00:37:52,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:37:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2020-11-30 00:37:52,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:37:52,120 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:52,120 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] [2020-11-30 00:37:52,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:37:52,120 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:52,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:52,121 INFO L82 PathProgramCache]: Analyzing trace with hash -855709928, now seen corresponding path program 1 times [2020-11-30 00:37:52,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:52,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775708413] [2020-11-30 00:37:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:37:52,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775708413] [2020-11-30 00:37:52,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:37:52,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:37:52,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351529512] [2020-11-30 00:37:52,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:37:52,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:52,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:37:52,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:37:52,230 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand 3 states. [2020-11-30 00:37:52,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:52,290 INFO L93 Difference]: Finished difference Result 117 states and 168 transitions. [2020-11-30 00:37:52,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:37:52,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-30 00:37:52,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:52,292 INFO L225 Difference]: With dead ends: 117 [2020-11-30 00:37:52,292 INFO L226 Difference]: Without dead ends: 72 [2020-11-30 00:37:52,293 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 [2020-11-30 00:37:52,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-30 00:37:52,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-11-30 00:37:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-30 00:37:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2020-11-30 00:37:52,308 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 24 [2020-11-30 00:37:52,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:52,309 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2020-11-30 00:37:52,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:37:52,309 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2020-11-30 00:37:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 00:37:52,310 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:52,311 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] [2020-11-30 00:37:52,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:37:52,311 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:52,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:52,312 INFO L82 PathProgramCache]: Analyzing trace with hash -407287284, now seen corresponding path program 1 times [2020-11-30 00:37:52,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:52,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019272356] [2020-11-30 00:37:52,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:37:52,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019272356] [2020-11-30 00:37:52,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:37:52,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:37:52,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655409163] [2020-11-30 00:37:52,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:37:52,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:52,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:37:52,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:37:52,439 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand 5 states. [2020-11-30 00:37:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:52,600 INFO L93 Difference]: Finished difference Result 247 states and 354 transitions. [2020-11-30 00:37:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:37:52,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-30 00:37:52,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:52,605 INFO L225 Difference]: With dead ends: 247 [2020-11-30 00:37:52,605 INFO L226 Difference]: Without dead ends: 183 [2020-11-30 00:37:52,606 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 [2020-11-30 00:37:52,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-30 00:37:52,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2020-11-30 00:37:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-30 00:37:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2020-11-30 00:37:52,634 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 30 [2020-11-30 00:37:52,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:52,634 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2020-11-30 00:37:52,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:37:52,635 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2020-11-30 00:37:52,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:37:52,641 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:52,641 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] [2020-11-30 00:37:52,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:37:52,642 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:52,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:52,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1879863818, now seen corresponding path program 1 times [2020-11-30 00:37:52,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:52,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849188604] [2020-11-30 00:37:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:37:52,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849188604] [2020-11-30 00:37:52,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:37:52,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:37:52,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227645840] [2020-11-30 00:37:52,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:37:52,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:52,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:37:52,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:37:52,737 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand 4 states. [2020-11-30 00:37:52,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:52,921 INFO L93 Difference]: Finished difference Result 234 states and 328 transitions. [2020-11-30 00:37:52,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:37:52,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-30 00:37:52,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:52,924 INFO L225 Difference]: With dead ends: 234 [2020-11-30 00:37:52,924 INFO L226 Difference]: Without dead ends: 170 [2020-11-30 00:37:52,925 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 [2020-11-30 00:37:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-30 00:37:52,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2020-11-30 00:37:52,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-30 00:37:52,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 230 transitions. [2020-11-30 00:37:52,955 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 230 transitions. Word has length 31 [2020-11-30 00:37:52,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:52,956 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 230 transitions. [2020-11-30 00:37:52,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:37:52,963 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 230 transitions. [2020-11-30 00:37:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:37:52,969 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:52,969 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] [2020-11-30 00:37:52,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:37:52,970 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:52,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:52,972 INFO L82 PathProgramCache]: Analyzing trace with hash 2138029256, now seen corresponding path program 1 times [2020-11-30 00:37:52,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:52,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924202753] [2020-11-30 00:37:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:37:53,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924202753] [2020-11-30 00:37:53,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:37:53,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:37:53,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35591773] [2020-11-30 00:37:53,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:37:53,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:53,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:37:53,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:37:53,058 INFO L87 Difference]: Start difference. First operand 167 states and 230 transitions. Second operand 4 states. [2020-11-30 00:37:53,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:53,148 INFO L93 Difference]: Finished difference Result 465 states and 652 transitions. [2020-11-30 00:37:53,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:37:53,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-30 00:37:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:53,153 INFO L225 Difference]: With dead ends: 465 [2020-11-30 00:37:53,154 INFO L226 Difference]: Without dead ends: 346 [2020-11-30 00:37:53,156 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 [2020-11-30 00:37:53,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-11-30 00:37:53,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 167. [2020-11-30 00:37:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-30 00:37:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2020-11-30 00:37:53,203 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 31 [2020-11-30 00:37:53,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:53,203 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2020-11-30 00:37:53,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:37:53,204 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2020-11-30 00:37:53,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:37:53,207 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:53,207 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] [2020-11-30 00:37:53,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:37:53,207 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:53,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:53,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1745002246, now seen corresponding path program 1 times [2020-11-30 00:37:53,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:53,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464094045] [2020-11-30 00:37:53,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:37:53,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464094045] [2020-11-30 00:37:53,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:37:53,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:37:53,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090488155] [2020-11-30 00:37:53,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:37:53,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:53,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:37:53,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:37:53,313 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand 6 states. [2020-11-30 00:37:53,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:53,498 INFO L93 Difference]: Finished difference Result 582 states and 811 transitions. [2020-11-30 00:37:53,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:37:53,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-11-30 00:37:53,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:53,501 INFO L225 Difference]: With dead ends: 582 [2020-11-30 00:37:53,502 INFO L226 Difference]: Without dead ends: 421 [2020-11-30 00:37:53,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:37:53,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-11-30 00:37:53,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 176. [2020-11-30 00:37:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-11-30 00:37:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 235 transitions. [2020-11-30 00:37:53,530 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 235 transitions. Word has length 31 [2020-11-30 00:37:53,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:53,531 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 235 transitions. [2020-11-30 00:37:53,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:37:53,532 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 235 transitions. [2020-11-30 00:37:53,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:37:53,532 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:53,533 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, 1, 1, 1] [2020-11-30 00:37:53,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:37:53,533 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:53,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:53,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1770472833, now seen corresponding path program 1 times [2020-11-30 00:37:53,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:53,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808332504] [2020-11-30 00:37:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:37:53,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808332504] [2020-11-30 00:37:53,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:37:53,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:37:53,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944922032] [2020-11-30 00:37:53,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:37:53,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:53,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:37:53,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:37:53,639 INFO L87 Difference]: Start difference. First operand 176 states and 235 transitions. Second operand 6 states. [2020-11-30 00:37:53,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:53,927 INFO L93 Difference]: Finished difference Result 834 states and 1114 transitions. [2020-11-30 00:37:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:37:53,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-11-30 00:37:53,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:53,932 INFO L225 Difference]: With dead ends: 834 [2020-11-30 00:37:53,933 INFO L226 Difference]: Without dead ends: 664 [2020-11-30 00:37:53,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:37:53,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-11-30 00:37:53,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 334. [2020-11-30 00:37:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-11-30 00:37:53,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 439 transitions. [2020-11-30 00:37:53,977 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 439 transitions. Word has length 34 [2020-11-30 00:37:53,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:53,977 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 439 transitions. [2020-11-30 00:37:53,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:37:53,978 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 439 transitions. [2020-11-30 00:37:53,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:37:53,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:53,979 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, 1, 1, 1] [2020-11-30 00:37:53,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 00:37:53,979 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:53,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:53,980 INFO L82 PathProgramCache]: Analyzing trace with hash 4534529, now seen corresponding path program 1 times [2020-11-30 00:37:53,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:53,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876967842] [2020-11-30 00:37:53,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:54,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:37:54,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876967842] [2020-11-30 00:37:54,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:37:54,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:37:54,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535552251] [2020-11-30 00:37:54,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:37:54,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:54,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:37:54,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:37:54,075 INFO L87 Difference]: Start difference. First operand 334 states and 439 transitions. Second operand 5 states. [2020-11-30 00:37:54,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:54,339 INFO L93 Difference]: Finished difference Result 740 states and 975 transitions. [2020-11-30 00:37:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:37:54,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-11-30 00:37:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:54,346 INFO L225 Difference]: With dead ends: 740 [2020-11-30 00:37:54,346 INFO L226 Difference]: Without dead ends: 502 [2020-11-30 00:37:54,347 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 [2020-11-30 00:37:54,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-11-30 00:37:54,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 328. [2020-11-30 00:37:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-11-30 00:37:54,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 427 transitions. [2020-11-30 00:37:54,395 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 427 transitions. Word has length 34 [2020-11-30 00:37:54,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:54,396 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 427 transitions. [2020-11-30 00:37:54,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:37:54,396 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 427 transitions. [2020-11-30 00:37:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-30 00:37:54,398 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:54,398 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, 1, 1] [2020-11-30 00:37:54,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 00:37:54,399 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:54,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:54,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1946639489, now seen corresponding path program 1 times [2020-11-30 00:37:54,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:54,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239741105] [2020-11-30 00:37:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 00:37:54,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239741105] [2020-11-30 00:37:54,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:37:54,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:37:54,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842329723] [2020-11-30 00:37:54,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:37:54,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:54,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:37:54,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:37:54,483 INFO L87 Difference]: Start difference. First operand 328 states and 427 transitions. Second operand 5 states. [2020-11-30 00:37:54,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:54,635 INFO L93 Difference]: Finished difference Result 745 states and 973 transitions. [2020-11-30 00:37:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:37:54,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-11-30 00:37:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:54,640 INFO L225 Difference]: With dead ends: 745 [2020-11-30 00:37:54,640 INFO L226 Difference]: Without dead ends: 423 [2020-11-30 00:37:54,641 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 [2020-11-30 00:37:54,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-11-30 00:37:54,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 328. [2020-11-30 00:37:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-11-30 00:37:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 421 transitions. [2020-11-30 00:37:54,683 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 421 transitions. Word has length 51 [2020-11-30 00:37:54,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:54,684 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 421 transitions. [2020-11-30 00:37:54,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:37:54,684 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 421 transitions. [2020-11-30 00:37:54,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-30 00:37:54,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:54,685 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, 1, 1] [2020-11-30 00:37:54,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 00:37:54,686 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:54,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:54,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1245039615, now seen corresponding path program 1 times [2020-11-30 00:37:54,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:54,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583501996] [2020-11-30 00:37:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 00:37:54,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583501996] [2020-11-30 00:37:54,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:37:54,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:37:54,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220297511] [2020-11-30 00:37:54,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:37:54,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:54,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:37:54,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:37:54,768 INFO L87 Difference]: Start difference. First operand 328 states and 421 transitions. Second operand 4 states. [2020-11-30 00:37:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:54,861 INFO L93 Difference]: Finished difference Result 668 states and 867 transitions. [2020-11-30 00:37:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:37:54,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-11-30 00:37:54,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:54,865 INFO L225 Difference]: With dead ends: 668 [2020-11-30 00:37:54,865 INFO L226 Difference]: Without dead ends: 346 [2020-11-30 00:37:54,867 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 [2020-11-30 00:37:54,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-11-30 00:37:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 262. [2020-11-30 00:37:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-11-30 00:37:54,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 335 transitions. [2020-11-30 00:37:54,902 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 335 transitions. Word has length 51 [2020-11-30 00:37:54,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:54,902 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 335 transitions. [2020-11-30 00:37:54,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:37:54,903 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 335 transitions. [2020-11-30 00:37:54,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-30 00:37:54,904 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:54,904 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, 1, 1] [2020-11-30 00:37:54,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 00:37:54,905 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:54,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:54,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2094788923, now seen corresponding path program 1 times [2020-11-30 00:37:54,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:54,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571116404] [2020-11-30 00:37:54,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-30 00:37:55,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571116404] [2020-11-30 00:37:55,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:37:55,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:37:55,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649302109] [2020-11-30 00:37:55,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:37:55,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:55,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:37:55,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:37:55,007 INFO L87 Difference]: Start difference. First operand 262 states and 335 transitions. Second operand 6 states. [2020-11-30 00:37:55,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:55,299 INFO L93 Difference]: Finished difference Result 714 states and 934 transitions. [2020-11-30 00:37:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:37:55,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-11-30 00:37:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:55,309 INFO L225 Difference]: With dead ends: 714 [2020-11-30 00:37:55,309 INFO L226 Difference]: Without dead ends: 506 [2020-11-30 00:37:55,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:37:55,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-11-30 00:37:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 262. [2020-11-30 00:37:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-11-30 00:37:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 334 transitions. [2020-11-30 00:37:55,345 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 334 transitions. Word has length 52 [2020-11-30 00:37:55,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:55,346 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 334 transitions. [2020-11-30 00:37:55,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:37:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 334 transitions. [2020-11-30 00:37:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-30 00:37:55,348 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:55,348 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, 1, 1, 1] [2020-11-30 00:37:55,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 00:37:55,348 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:55,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:55,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1208636850, now seen corresponding path program 1 times [2020-11-30 00:37:55,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:55,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294886091] [2020-11-30 00:37:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:37:55,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294886091] [2020-11-30 00:37:55,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176561805] [2020-11-30 00:37:55,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/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 [2020-11-30 00:37:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:37:55,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:37:55,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:37:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:37:55,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:37:55,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-30 00:37:55,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791229156] [2020-11-30 00:37:55,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:37:55,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:37:55,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:37:55,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:37:55,800 INFO L87 Difference]: Start difference. First operand 262 states and 334 transitions. Second operand 6 states. [2020-11-30 00:37:56,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:37:56,152 INFO L93 Difference]: Finished difference Result 805 states and 1041 transitions. [2020-11-30 00:37:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:37:56,153 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-11-30 00:37:56,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:37:56,157 INFO L225 Difference]: With dead ends: 805 [2020-11-30 00:37:56,157 INFO L226 Difference]: Without dead ends: 597 [2020-11-30 00:37:56,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:37:56,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-11-30 00:37:56,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 366. [2020-11-30 00:37:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-11-30 00:37:56,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 471 transitions. [2020-11-30 00:37:56,211 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 471 transitions. Word has length 53 [2020-11-30 00:37:56,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:37:56,212 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 471 transitions. [2020-11-30 00:37:56,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:37:56,212 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 471 transitions. [2020-11-30 00:37:56,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-30 00:37:56,213 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:37:56,214 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, 1, 1, 1] [2020-11-30 00:37:56,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-30 00:37:56,435 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:37:56,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:37:56,436 INFO L82 PathProgramCache]: Analyzing trace with hash 742788065, now seen corresponding path program 2 times [2020-11-30 00:37:56,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:37:56,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395207207] [2020-11-30 00:37:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:37:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:37:56,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:37:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:37:56,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:37:56,678 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:37:56,680 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:37:56,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-30 00:37:56,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:37:56 BoogieIcfgContainer [2020-11-30 00:37:56,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:37:56,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:37:56,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:37:56,890 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:37:56,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:37:50" (3/4) ... [2020-11-30 00:37:56,893 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:37:57,096 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9dea22d5-8726-4902-b931-f672f5fba840/bin/uautomizer/witness.graphml [2020-11-30 00:37:57,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:37:57,098 INFO L168 Benchmark]: Toolchain (without parser) took 8663.50 ms. Allocated memory was 96.5 MB in the beginning and 159.4 MB in the end (delta: 62.9 MB). Free memory was 68.9 MB in the beginning and 82.5 MB in the end (delta: -13.5 MB). Peak memory consumption was 49.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:37:57,099 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:37:57,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 754.41 ms. Allocated memory is still 96.5 MB. Free memory was 68.7 MB in the beginning and 62.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:37:57,101 INFO L168 Benchmark]: Boogie Procedure Inliner took 149.20 ms. Allocated memory is still 96.5 MB. Free memory was 62.8 MB in the beginning and 58.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:37:57,102 INFO L168 Benchmark]: Boogie Preprocessor took 127.56 ms. Allocated memory is still 96.5 MB. Free memory was 58.9 MB in the beginning and 56.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:37:57,102 INFO L168 Benchmark]: RCFGBuilder took 1494.91 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 56.0 MB in the beginning and 77.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:37:57,103 INFO L168 Benchmark]: TraceAbstraction took 5923.44 ms. Allocated memory was 121.6 MB in the beginning and 159.4 MB in the end (delta: 37.7 MB). Free memory was 77.6 MB in the beginning and 110.8 MB in the end (delta: -33.2 MB). Peak memory consumption was 73.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:37:57,103 INFO L168 Benchmark]: Witness Printer took 206.89 ms. Allocated memory is still 159.4 MB. Free memory was 110.8 MB in the beginning and 82.5 MB in the end (delta: 28.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:37:57,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 754.41 ms. Allocated memory is still 96.5 MB. Free memory was 68.7 MB in the beginning and 62.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 149.20 ms. Allocated memory is still 96.5 MB. Free memory was 62.8 MB in the beginning and 58.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 127.56 ms. Allocated memory is still 96.5 MB. Free memory was 58.9 MB in the beginning and 56.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1494.91 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 56.0 MB in the beginning and 77.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5923.44 ms. Allocated memory was 121.6 MB in the beginning and 159.4 MB in the end (delta: 37.7 MB). Free memory was 77.6 MB in the beginning and 110.8 MB in the end (delta: -33.2 MB). Peak memory consumption was 73.4 MB. Max. memory is 16.1 GB. * Witness Printer took 206.89 ms. Allocated memory is still 159.4 MB. Free memory was 110.8 MB in the beginning and 82.5 MB in the end (delta: 28.3 MB). Peak memory consumption was 29.4 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: [L42] int cleanupTimeShifts = 4; [L344] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L557] int pumpRunning = 0; [L558] int systemActive = 1; [L760] int waterLevel = 1; [L761] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L947] int retValue_acc ; [L950] retValue_acc = 1 [L951] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L855] int splverifierCounter ; [L856] int tmp ; [L857] int tmp___0 ; [L858] int tmp___1 ; [L859] int tmp___2 ; [L862] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L864] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L866] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L872] tmp = __VERIFIER_nondet_int() [L874] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] COND TRUE waterLevel < 2 [L779] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L564] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L571] COND TRUE \read(systemActive) [L619] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L622] COND FALSE !(\read(pumpRunning)) [L593] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] COND TRUE ! pumpRunning [L733] int retValue_acc ; [L734] int tmp ; [L735] int tmp___0 ; [L840] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L843] COND FALSE !(waterLevel < 2) [L847] retValue_acc = 0 [L848] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L739] tmp = isHighWaterSensorDry() [L741] COND FALSE !(\read(tmp)) [L744] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L746] retValue_acc = tmp___0 [L747] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L598] tmp = isHighWaterLevel() [L600] COND TRUE \read(tmp) [L652] int tmp ; [L677] int retValue_acc ; [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L656] tmp = isMethaneAlarm() [L658] COND FALSE !(\read(tmp)) [L647] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L150] int tmp ; [L151] int tmp___0 ; [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L155] tmp = getWaterLevel() [L157] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L864] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L866] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L872] tmp = __VERIFIER_nondet_int() [L874] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L564] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L766] COND TRUE waterLevel > 0 [L767] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L571] COND TRUE \read(systemActive) [L619] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L622] COND TRUE \read(pumpRunning) [L677] int retValue_acc ; [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L624] tmp = isMethaneAlarm() [L626] COND FALSE !(\read(tmp)) [L593] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L596] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L150] int tmp ; [L151] int tmp___0 ; [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L155] tmp = getWaterLevel() [L157] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L864] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L866] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L872] tmp = __VERIFIER_nondet_int() [L874] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L564] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L766] COND TRUE waterLevel > 0 [L767] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L571] COND TRUE \read(systemActive) [L619] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L622] COND TRUE \read(pumpRunning) [L677] int retValue_acc ; [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L624] tmp = isMethaneAlarm() [L626] COND FALSE !(\read(tmp)) [L593] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L596] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L150] int tmp ; [L151] int tmp___0 ; [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L155] tmp = getWaterLevel() [L157] COND TRUE tmp == 0 [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L159] tmp___0 = isPumpRunning() [L161] 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_product46.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, 132 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.6s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1555 SDtfs, 2199 SDslu, 2569 SDs, 0 SdLazy, 378 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 1657 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 602 NumberOfCodeBlocks, 602 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 38105 SizeOfPredicates, 4 NumberOfNonLiveVariables, 436 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 64/70 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...