./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.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_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/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 10c62355b958c28dceaa55313714ee80b90c1fad ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:05:18,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:05:18,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:05:19,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:05:19,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:05:19,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:05:19,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:05:19,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:05:19,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:05:19,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:05:19,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:05:19,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:05:19,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:05:19,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:05:19,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:05:19,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:05:19,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:05:19,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:05:19,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:05:19,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:05:19,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:05:19,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:05:19,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:05:19,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:05:19,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:05:19,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:05:19,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:05:19,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:05:19,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:05:19,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:05:19,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:05:19,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:05:19,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:05:19,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:05:19,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:05:19,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:05:19,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:05:19,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:05:19,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:05:19,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:05:19,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:05:19,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:05:19,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:05:19,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:05:19,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:05:19,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:05:19,206 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:05:19,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:05:19,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:05:19,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:05:19,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:05:19,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:05:19,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:05:19,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:05:19,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:05:19,209 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:05:19,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:05:19,210 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:05:19,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:05:19,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:05:19,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:05:19,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:05:19,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:05:19,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:05:19,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:05:19,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:05:19,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:05:19,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:05:19,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:05:19,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:05:19,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:05:19,213 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_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10c62355b958c28dceaa55313714ee80b90c1fad [2020-11-28 03:05:19,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:05:19,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:05:19,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:05:19,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:05:19,616 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:05:19,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2020-11-28 03:05:19,713 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer/data/11f5f2952/2d0e76f61c8444809ae797af0b86d131/FLAG70591371b [2020-11-28 03:05:20,441 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:05:20,441 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2020-11-28 03:05:20,464 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer/data/11f5f2952/2d0e76f61c8444809ae797af0b86d131/FLAG70591371b [2020-11-28 03:05:20,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer/data/11f5f2952/2d0e76f61c8444809ae797af0b86d131 [2020-11-28 03:05:20,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:05:20,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:05:20,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:05:20,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:05:20,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:05:20,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:20" (1/1) ... [2020-11-28 03:05:20,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16131e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:20, skipping insertion in model container [2020-11-28 03:05:20,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:20" (1/1) ... [2020-11-28 03:05:20,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:05:20,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:05:21,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:05:21,200 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:05:21,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:05:21,340 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:05:21,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:21 WrapperNode [2020-11-28 03:05:21,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:05:21,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:05:21,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:05:21,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:05:21,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:21" (1/1) ... [2020-11-28 03:05:21,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:21" (1/1) ... [2020-11-28 03:05:21,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:05:21,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:05:21,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:05:21,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:05:21,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:21" (1/1) ... [2020-11-28 03:05:21,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:21" (1/1) ... [2020-11-28 03:05:21,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:21" (1/1) ... [2020-11-28 03:05:21,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:21" (1/1) ... [2020-11-28 03:05:21,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:21" (1/1) ... [2020-11-28 03:05:21,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:21" (1/1) ... [2020-11-28 03:05:21,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:21" (1/1) ... [2020-11-28 03:05:21,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:05:21,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:05:21,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:05:21,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:05:21,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:05:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:05:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:05:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:05:21,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:05:22,934 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:05:22,934 INFO L298 CfgBuilder]: Removed 168 assume(true) statements. [2020-11-28 03:05:22,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:22 BoogieIcfgContainer [2020-11-28 03:05:22,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:05:22,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:05:22,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:05:22,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:05:22,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:05:20" (1/3) ... [2020-11-28 03:05:22,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba60ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:05:22, skipping insertion in model container [2020-11-28 03:05:22,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:21" (2/3) ... [2020-11-28 03:05:22,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba60ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:05:22, skipping insertion in model container [2020-11-28 03:05:22,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:22" (3/3) ... [2020-11-28 03:05:22,944 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2020-11-28 03:05:22,955 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:05:22,959 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 03:05:22,970 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 03:05:22,995 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:05:22,995 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:05:22,995 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:05:22,995 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:05:22,995 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:05:22,995 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:05:22,995 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:05:22,996 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:05:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-11-28 03:05:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:05:23,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:23,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:23,018 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:23,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:23,022 INFO L82 PathProgramCache]: Analyzing trace with hash -515765374, now seen corresponding path program 1 times [2020-11-28 03:05:23,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:23,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736907512] [2020-11-28 03:05:23,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:23,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736907512] [2020-11-28 03:05:23,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:23,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:05:23,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836803185] [2020-11-28 03:05:23,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:05:23,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:23,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:05:23,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:05:23,347 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-11-28 03:05:23,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:23,377 INFO L93 Difference]: Finished difference Result 223 states and 338 transitions. [2020-11-28 03:05:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:05:23,378 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-28 03:05:23,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:23,388 INFO L225 Difference]: With dead ends: 223 [2020-11-28 03:05:23,388 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 03:05:23,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:05:23,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 03:05:23,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-28 03:05:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-28 03:05:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-11-28 03:05:23,448 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-11-28 03:05:23,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:23,449 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-11-28 03:05:23,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:05:23,449 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-11-28 03:05:23,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:05:23,451 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:23,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:23,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:05:23,452 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:23,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1562522271, now seen corresponding path program 1 times [2020-11-28 03:05:23,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:23,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128218759] [2020-11-28 03:05:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:23,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128218759] [2020-11-28 03:05:23,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:23,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:05:23,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117875902] [2020-11-28 03:05:23,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:05:23,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:23,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:05:23,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:05:23,613 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2020-11-28 03:05:23,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:23,636 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-11-28 03:05:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:05:23,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:05:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:23,641 INFO L225 Difference]: With dead ends: 109 [2020-11-28 03:05:23,641 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 03:05:23,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:05:23,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 03:05:23,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-28 03:05:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 03:05:23,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-11-28 03:05:23,659 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-11-28 03:05:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:23,659 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-11-28 03:05:23,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:05:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-11-28 03:05:23,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:05:23,663 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:23,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:23,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:05:23,664 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:23,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:23,665 INFO L82 PathProgramCache]: Analyzing trace with hash 109011716, now seen corresponding path program 1 times [2020-11-28 03:05:23,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:23,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084154822] [2020-11-28 03:05:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:23,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084154822] [2020-11-28 03:05:23,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:23,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:05:23,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404534416] [2020-11-28 03:05:23,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:05:23,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:23,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:05:23,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:05:23,803 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 3 states. [2020-11-28 03:05:23,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:23,850 INFO L93 Difference]: Finished difference Result 129 states and 192 transitions. [2020-11-28 03:05:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:05:23,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 03:05:23,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:23,852 INFO L225 Difference]: With dead ends: 129 [2020-11-28 03:05:23,852 INFO L226 Difference]: Without dead ends: 88 [2020-11-28 03:05:23,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:05:23,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-28 03:05:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-11-28 03:05:23,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-28 03:05:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 125 transitions. [2020-11-28 03:05:23,871 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 125 transitions. Word has length 22 [2020-11-28 03:05:23,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:23,871 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 125 transitions. [2020-11-28 03:05:23,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:05:23,872 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 125 transitions. [2020-11-28 03:05:23,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:05:23,873 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:23,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:23,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:05:23,874 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:23,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:23,875 INFO L82 PathProgramCache]: Analyzing trace with hash 60563277, now seen corresponding path program 1 times [2020-11-28 03:05:23,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:23,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335285926] [2020-11-28 03:05:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:23,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335285926] [2020-11-28 03:05:23,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:23,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:05:23,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133607289] [2020-11-28 03:05:23,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:05:23,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:23,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:05:23,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:05:23,963 INFO L87 Difference]: Start difference. First operand 84 states and 125 transitions. Second operand 3 states. [2020-11-28 03:05:24,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:24,016 INFO L93 Difference]: Finished difference Result 203 states and 306 transitions. [2020-11-28 03:05:24,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:05:24,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-28 03:05:24,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:24,018 INFO L225 Difference]: With dead ends: 203 [2020-11-28 03:05:24,018 INFO L226 Difference]: Without dead ends: 125 [2020-11-28 03:05:24,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:05:24,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-28 03:05:24,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2020-11-28 03:05:24,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-28 03:05:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 179 transitions. [2020-11-28 03:05:24,036 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 179 transitions. Word has length 24 [2020-11-28 03:05:24,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:24,036 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 179 transitions. [2020-11-28 03:05:24,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:05:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 179 transitions. [2020-11-28 03:05:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:05:24,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:24,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:24,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:05:24,039 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:24,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:24,040 INFO L82 PathProgramCache]: Analyzing trace with hash -445763815, now seen corresponding path program 1 times [2020-11-28 03:05:24,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:24,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394791368] [2020-11-28 03:05:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:24,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394791368] [2020-11-28 03:05:24,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:24,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:05:24,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789707272] [2020-11-28 03:05:24,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:05:24,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:24,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:05:24,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:05:24,143 INFO L87 Difference]: Start difference. First operand 123 states and 179 transitions. Second operand 5 states. [2020-11-28 03:05:24,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:24,279 INFO L93 Difference]: Finished difference Result 439 states and 645 transitions. [2020-11-28 03:05:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:05:24,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-28 03:05:24,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:24,283 INFO L225 Difference]: With dead ends: 439 [2020-11-28 03:05:24,283 INFO L226 Difference]: Without dead ends: 322 [2020-11-28 03:05:24,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:05:24,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-11-28 03:05:24,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 206. [2020-11-28 03:05:24,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-28 03:05:24,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 290 transitions. [2020-11-28 03:05:24,311 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 290 transitions. Word has length 25 [2020-11-28 03:05:24,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:24,311 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 290 transitions. [2020-11-28 03:05:24,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:05:24,312 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 290 transitions. [2020-11-28 03:05:24,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:05:24,313 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:24,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:24,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:05:24,314 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:24,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:24,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1889894491, now seen corresponding path program 1 times [2020-11-28 03:05:24,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:24,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890536723] [2020-11-28 03:05:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:24,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890536723] [2020-11-28 03:05:24,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:24,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:05:24,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079877506] [2020-11-28 03:05:24,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:05:24,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:24,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:05:24,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:05:24,422 INFO L87 Difference]: Start difference. First operand 206 states and 290 transitions. Second operand 5 states. [2020-11-28 03:05:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:24,573 INFO L93 Difference]: Finished difference Result 438 states and 630 transitions. [2020-11-28 03:05:24,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:05:24,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-28 03:05:24,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:24,577 INFO L225 Difference]: With dead ends: 438 [2020-11-28 03:05:24,577 INFO L226 Difference]: Without dead ends: 436 [2020-11-28 03:05:24,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:05:24,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-11-28 03:05:24,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 206. [2020-11-28 03:05:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-28 03:05:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 288 transitions. [2020-11-28 03:05:24,597 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 288 transitions. Word has length 26 [2020-11-28 03:05:24,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:24,601 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 288 transitions. [2020-11-28 03:05:24,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:05:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 288 transitions. [2020-11-28 03:05:24,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 03:05:24,609 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:24,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:24,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:05:24,610 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:24,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:24,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1724354492, now seen corresponding path program 1 times [2020-11-28 03:05:24,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:24,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813419006] [2020-11-28 03:05:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:24,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813419006] [2020-11-28 03:05:24,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:24,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:05:24,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075412561] [2020-11-28 03:05:24,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:05:24,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:24,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:05:24,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:05:24,699 INFO L87 Difference]: Start difference. First operand 206 states and 288 transitions. Second operand 4 states. [2020-11-28 03:05:24,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:24,814 INFO L93 Difference]: Finished difference Result 426 states and 607 transitions. [2020-11-28 03:05:24,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:05:24,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-28 03:05:24,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:24,817 INFO L225 Difference]: With dead ends: 426 [2020-11-28 03:05:24,817 INFO L226 Difference]: Without dead ends: 309 [2020-11-28 03:05:24,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:05:24,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-11-28 03:05:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 305. [2020-11-28 03:05:24,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-11-28 03:05:24,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 425 transitions. [2020-11-28 03:05:24,841 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 425 transitions. Word has length 31 [2020-11-28 03:05:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:24,844 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 425 transitions. [2020-11-28 03:05:24,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:05:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 425 transitions. [2020-11-28 03:05:24,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 03:05:24,848 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:24,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:24,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:05:24,848 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:24,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:24,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1982519930, now seen corresponding path program 1 times [2020-11-28 03:05:24,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:24,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142302682] [2020-11-28 03:05:24,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:24,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142302682] [2020-11-28 03:05:24,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:24,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:05:24,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865237308] [2020-11-28 03:05:24,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:05:24,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:24,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:05:24,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:05:24,902 INFO L87 Difference]: Start difference. First operand 305 states and 425 transitions. Second operand 4 states. [2020-11-28 03:05:24,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:24,992 INFO L93 Difference]: Finished difference Result 894 states and 1264 transitions. [2020-11-28 03:05:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:05:24,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-28 03:05:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:24,999 INFO L225 Difference]: With dead ends: 894 [2020-11-28 03:05:25,000 INFO L226 Difference]: Without dead ends: 676 [2020-11-28 03:05:25,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:05:25,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-11-28 03:05:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 305. [2020-11-28 03:05:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-11-28 03:05:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 421 transitions. [2020-11-28 03:05:25,039 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 421 transitions. Word has length 31 [2020-11-28 03:05:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:25,040 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 421 transitions. [2020-11-28 03:05:25,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:05:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 421 transitions. [2020-11-28 03:05:25,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 03:05:25,040 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:25,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:25,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:05:25,041 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:25,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:25,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1589492920, now seen corresponding path program 1 times [2020-11-28 03:05:25,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:25,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651633393] [2020-11-28 03:05:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:25,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651633393] [2020-11-28 03:05:25,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:25,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:05:25,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510912734] [2020-11-28 03:05:25,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:05:25,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:25,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:05:25,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:05:25,144 INFO L87 Difference]: Start difference. First operand 305 states and 421 transitions. Second operand 5 states. [2020-11-28 03:05:25,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:25,403 INFO L93 Difference]: Finished difference Result 673 states and 940 transitions. [2020-11-28 03:05:25,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:05:25,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-28 03:05:25,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:25,407 INFO L225 Difference]: With dead ends: 673 [2020-11-28 03:05:25,407 INFO L226 Difference]: Without dead ends: 455 [2020-11-28 03:05:25,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:05:25,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-11-28 03:05:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 336. [2020-11-28 03:05:25,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-11-28 03:05:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 467 transitions. [2020-11-28 03:05:25,437 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 467 transitions. Word has length 31 [2020-11-28 03:05:25,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:25,437 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 467 transitions. [2020-11-28 03:05:25,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:05:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 467 transitions. [2020-11-28 03:05:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-28 03:05:25,438 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:25,439 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] [2020-11-28 03:05:25,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:05:25,439 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:25,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:25,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1479282308, now seen corresponding path program 1 times [2020-11-28 03:05:25,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:25,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278522571] [2020-11-28 03:05:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:05:25,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278522571] [2020-11-28 03:05:25,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:25,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:05:25,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831352434] [2020-11-28 03:05:25,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:05:25,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:25,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:05:25,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:05:25,511 INFO L87 Difference]: Start difference. First operand 336 states and 467 transitions. Second operand 3 states. [2020-11-28 03:05:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:25,606 INFO L93 Difference]: Finished difference Result 577 states and 798 transitions. [2020-11-28 03:05:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:05:25,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-11-28 03:05:25,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:25,613 INFO L225 Difference]: With dead ends: 577 [2020-11-28 03:05:25,613 INFO L226 Difference]: Without dead ends: 247 [2020-11-28 03:05:25,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:05:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-11-28 03:05:25,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 239. [2020-11-28 03:05:25,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-11-28 03:05:25,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 325 transitions. [2020-11-28 03:05:25,635 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 325 transitions. Word has length 48 [2020-11-28 03:05:25,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:25,635 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 325 transitions. [2020-11-28 03:05:25,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:05:25,635 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 325 transitions. [2020-11-28 03:05:25,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-28 03:05:25,636 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:25,637 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:25,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:05:25,639 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:25,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:25,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1631590215, now seen corresponding path program 1 times [2020-11-28 03:05:25,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:25,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062939284] [2020-11-28 03:05:25,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:05:25,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062939284] [2020-11-28 03:05:25,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:25,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:05:25,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380347184] [2020-11-28 03:05:25,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:05:25,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:25,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:05:25,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:05:25,738 INFO L87 Difference]: Start difference. First operand 239 states and 325 transitions. Second operand 5 states. [2020-11-28 03:05:25,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:25,854 INFO L93 Difference]: Finished difference Result 733 states and 994 transitions. [2020-11-28 03:05:25,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:05:25,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-11-28 03:05:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:25,858 INFO L225 Difference]: With dead ends: 733 [2020-11-28 03:05:25,858 INFO L226 Difference]: Without dead ends: 500 [2020-11-28 03:05:25,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:05:25,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-28 03:05:25,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 248. [2020-11-28 03:05:25,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-11-28 03:05:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 334 transitions. [2020-11-28 03:05:25,884 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 334 transitions. Word has length 49 [2020-11-28 03:05:25,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:25,885 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 334 transitions. [2020-11-28 03:05:25,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:05:25,885 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 334 transitions. [2020-11-28 03:05:25,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-28 03:05:25,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:25,886 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:25,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:05:25,887 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:25,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:25,887 INFO L82 PathProgramCache]: Analyzing trace with hash -245386821, now seen corresponding path program 1 times [2020-11-28 03:05:25,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:25,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456891435] [2020-11-28 03:05:25,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:05:25,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456891435] [2020-11-28 03:05:25,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:25,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:05:25,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594323960] [2020-11-28 03:05:25,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:05:25,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:25,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:05:25,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:05:25,962 INFO L87 Difference]: Start difference. First operand 248 states and 334 transitions. Second operand 5 states. [2020-11-28 03:05:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:26,113 INFO L93 Difference]: Finished difference Result 600 states and 800 transitions. [2020-11-28 03:05:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:05:26,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-11-28 03:05:26,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:26,116 INFO L225 Difference]: With dead ends: 600 [2020-11-28 03:05:26,116 INFO L226 Difference]: Without dead ends: 358 [2020-11-28 03:05:26,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:05:26,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-28 03:05:26,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 216. [2020-11-28 03:05:26,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-28 03:05:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 284 transitions. [2020-11-28 03:05:26,150 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 284 transitions. Word has length 49 [2020-11-28 03:05:26,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:26,151 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 284 transitions. [2020-11-28 03:05:26,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:05:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 284 transitions. [2020-11-28 03:05:26,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-28 03:05:26,152 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:26,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:26,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 03:05:26,152 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:26,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:26,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1908839041, now seen corresponding path program 1 times [2020-11-28 03:05:26,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:26,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883339860] [2020-11-28 03:05:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:26,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883339860] [2020-11-28 03:05:26,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991259366] [2020-11-28 03:05:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:05:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:26,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:05:26,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:05:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:26,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:05:26,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-28 03:05:26,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434125439] [2020-11-28 03:05:26,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:05:26,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:26,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:05:26,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:05:26,495 INFO L87 Difference]: Start difference. First operand 216 states and 284 transitions. Second operand 6 states. [2020-11-28 03:05:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:26,816 INFO L93 Difference]: Finished difference Result 608 states and 813 transitions. [2020-11-28 03:05:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:05:26,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-11-28 03:05:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:26,822 INFO L225 Difference]: With dead ends: 608 [2020-11-28 03:05:26,822 INFO L226 Difference]: Without dead ends: 446 [2020-11-28 03:05:26,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:05:26,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-11-28 03:05:26,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 262. [2020-11-28 03:05:26,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-11-28 03:05:26,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 345 transitions. [2020-11-28 03:05:26,860 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 345 transitions. Word has length 50 [2020-11-28 03:05:26,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:26,861 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 345 transitions. [2020-11-28 03:05:26,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:05:26,862 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 345 transitions. [2020-11-28 03:05:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-28 03:05:26,863 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:26,863 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:27,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 03:05:27,078 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:27,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:27,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1359831384, now seen corresponding path program 2 times [2020-11-28 03:05:27,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:27,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075567410] [2020-11-28 03:05:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:05:27,171 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:05:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:05:27,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:05:27,343 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:05:27,344 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:05:27,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 03:05:27,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:05:27 BoogieIcfgContainer [2020-11-28 03:05:27,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:05:27,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:05:27,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:05:27,507 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:05:27,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:22" (3/4) ... [2020-11-28 03:05:27,510 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:05:27,694 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8513ae55-7023-4ee4-8ef2-fc6ccd471dfb/bin/uautomizer/witness.graphml [2020-11-28 03:05:27,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:05:27,696 INFO L168 Benchmark]: Toolchain (without parser) took 6954.84 ms. Allocated memory was 102.8 MB in the beginning and 155.2 MB in the end (delta: 52.4 MB). Free memory was 73.6 MB in the beginning and 127.3 MB in the end (delta: -53.6 MB). Peak memory consumption was 86.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:27,696 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory was 60.0 MB in the beginning and 60.0 MB in the end (delta: 45.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:05:27,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 599.48 ms. Allocated memory is still 102.8 MB. Free memory was 73.6 MB in the beginning and 69.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:27,697 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.67 ms. Allocated memory is still 102.8 MB. Free memory was 69.8 MB in the beginning and 66.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:27,698 INFO L168 Benchmark]: Boogie Preprocessor took 95.36 ms. Allocated memory is still 102.8 MB. Free memory was 66.1 MB in the beginning and 63.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:27,698 INFO L168 Benchmark]: RCFGBuilder took 1394.76 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 63.2 MB in the beginning and 70.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:27,699 INFO L168 Benchmark]: TraceAbstraction took 4568.50 ms. Allocated memory was 123.7 MB in the beginning and 155.2 MB in the end (delta: 31.5 MB). Free memory was 70.2 MB in the beginning and 64.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:27,699 INFO L168 Benchmark]: Witness Printer took 187.42 ms. Allocated memory is still 155.2 MB. Free memory was 64.4 MB in the beginning and 127.3 MB in the end (delta: -62.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:27,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory was 60.0 MB in the beginning and 60.0 MB in the end (delta: 45.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 599.48 ms. Allocated memory is still 102.8 MB. Free memory was 73.6 MB in the beginning and 69.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.67 ms. Allocated memory is still 102.8 MB. Free memory was 69.8 MB in the beginning and 66.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.36 ms. Allocated memory is still 102.8 MB. Free memory was 66.1 MB in the beginning and 63.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1394.76 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 63.2 MB in the beginning and 70.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4568.50 ms. Allocated memory was 123.7 MB in the beginning and 155.2 MB in the end (delta: 31.5 MB). Free memory was 70.2 MB in the beginning and 64.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. * Witness Printer took 187.42 ms. Allocated memory is still 155.2 MB. Free memory was 64.4 MB in the beginning and 127.3 MB in the end (delta: -62.9 MB). Peak memory consumption was 25.2 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: [L125] int pumpRunning = 0; [L126] int systemActive = 1; [L336] int cleanupTimeShifts = 4; [L436] int waterLevel = 1; [L437] int methaneLevelCritical = 0; [L699] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L412] int retValue_acc ; [L413] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L948] int retValue_acc ; [L951] retValue_acc = 1 [L952] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L419] tmp = valid_product() [L421] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L49] int splverifierCounter ; [L50] int tmp ; [L51] int tmp___0 ; [L52] int tmp___1 ; [L53] int tmp___2 ; [L56] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L454] COND TRUE waterLevel < 2 [L455] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L133] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L191] COND FALSE !(\read(pumpRunning)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] COND TRUE ! pumpRunning [L285] int retValue_acc ; [L286] int tmp ; [L287] int tmp___0 ; [L516] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L519] COND FALSE !(waterLevel < 2) [L523] retValue_acc = 0 [L524] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L291] tmp = isHighWaterSensorDry() [L293] COND FALSE !(\read(tmp)) [L296] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L298] retValue_acc = tmp___0 [L299] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] tmp = isHighWaterLevel() [L169] COND TRUE \read(tmp) [L216] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L902] tmp = getWaterLevel() [L904] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L442] COND TRUE waterLevel > 0 [L443] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L191] COND TRUE \read(pumpRunning) [L229] int retValue_acc ; [L475] int retValue_acc ; [L478] retValue_acc = methaneLevelCritical [L479] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L233] retValue_acc = isMethaneLevelCritical() [L235] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L193] tmp = isMethaneAlarm() [L195] COND FALSE !(\read(tmp)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L902] tmp = getWaterLevel() [L904] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L442] COND TRUE waterLevel > 0 [L443] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L191] COND TRUE \read(pumpRunning) [L229] int retValue_acc ; [L475] int retValue_acc ; [L478] retValue_acc = methaneLevelCritical [L479] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L233] retValue_acc = isMethaneLevelCritical() [L235] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L193] tmp = isMethaneAlarm() [L195] COND FALSE !(\read(tmp)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L902] tmp = getWaterLevel() [L904] COND TRUE tmp == 0 [L240] int retValue_acc ; [L243] retValue_acc = pumpRunning [L244] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L906] tmp___0 = isPumpRunning() [L908] 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_product40.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 116 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1409 SDtfs, 1510 SDslu, 1947 SDs, 0 SdLazy, 301 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=336occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 1432 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 538 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 455 ConstructedInterpolants, 0 QuantifiedInterpolants, 28097 SizeOfPredicates, 4 NumberOfNonLiveVariables, 420 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 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...