./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.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_525a5fc2-4985-41cc-827b-e69da1e4ae07/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/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 9f716f844e272d3040100c1f49345c7fdf02d773 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:18:44,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:18:44,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:18:44,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:18:44,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:18:44,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:18:44,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:18:44,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:18:44,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:18:44,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:18:44,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:18:44,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:18:44,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:18:44,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:18:44,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:18:44,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:18:44,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:18:44,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:18:44,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:18:44,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:18:44,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:18:44,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:18:44,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:18:44,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:18:44,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:18:44,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:18:44,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:18:44,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:18:44,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:18:44,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:18:44,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:18:44,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:18:44,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:18:44,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:18:44,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:18:44,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:18:44,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:18:44,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:18:44,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:18:44,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:18:44,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:18:44,549 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:18:44,577 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:18:44,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:18:44,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:18:44,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:18:44,580 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:18:44,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:18:44,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:18:44,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:18:44,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:18:44,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:18:44,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:18:44,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:18:44,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:18:44,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:18:44,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:18:44,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:18:44,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:18:44,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:18:44,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:18:44,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:18:44,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:18:44,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:18:44,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:18:44,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:18:44,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:18:44,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:18:44,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:18:44,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:18:44,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:18:44,592 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_525a5fc2-4985-41cc-827b-e69da1e4ae07/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f716f844e272d3040100c1f49345c7fdf02d773 [2020-11-28 03:18:44,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:18:44,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:18:44,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:18:44,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:18:44,955 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:18:44,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2020-11-28 03:18:45,042 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/bin/uautomizer/data/83477042d/d74e710577e84a00b34c50f0be0e9959/FLAGdda8de710 [2020-11-28 03:18:45,705 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:18:45,705 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2020-11-28 03:18:45,726 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/bin/uautomizer/data/83477042d/d74e710577e84a00b34c50f0be0e9959/FLAGdda8de710 [2020-11-28 03:18:45,974 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/bin/uautomizer/data/83477042d/d74e710577e84a00b34c50f0be0e9959 [2020-11-28 03:18:45,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:18:45,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:18:45,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:45,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:18:46,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:18:46,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:45" (1/1) ... [2020-11-28 03:18:46,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b02721c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:46, skipping insertion in model container [2020-11-28 03:18:46,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:45" (1/1) ... [2020-11-28 03:18:46,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:18:46,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:18:46,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:46,516 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:18:46,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:46,668 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:18:46,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:46 WrapperNode [2020-11-28 03:18:46,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:46,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:46,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:18:46,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:18:46,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:46" (1/1) ... [2020-11-28 03:18:46,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:46" (1/1) ... [2020-11-28 03:18:46,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:46,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:18:46,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:18:46,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:18:46,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:46" (1/1) ... [2020-11-28 03:18:46,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:46" (1/1) ... [2020-11-28 03:18:46,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:46" (1/1) ... [2020-11-28 03:18:46,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:46" (1/1) ... [2020-11-28 03:18:46,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:46" (1/1) ... [2020-11-28 03:18:46,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:46" (1/1) ... [2020-11-28 03:18:46,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:46" (1/1) ... [2020-11-28 03:18:46,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:18:46,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:18:46,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:18:46,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:18:46,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/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 03:18:46,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:18:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:18:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:18:46,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:18:47,955 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:18:47,956 INFO L298 CfgBuilder]: Removed 102 assume(true) statements. [2020-11-28 03:18:47,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:47 BoogieIcfgContainer [2020-11-28 03:18:47,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:18:47,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:18:47,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:18:47,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:18:47,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:18:45" (1/3) ... [2020-11-28 03:18:47,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:47, skipping insertion in model container [2020-11-28 03:18:47,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:46" (2/3) ... [2020-11-28 03:18:47,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:47, skipping insertion in model container [2020-11-28 03:18:47,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:47" (3/3) ... [2020-11-28 03:18:47,975 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-11-28 03:18:47,992 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:18:47,998 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 03:18:48,013 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 03:18:48,050 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:18:48,050 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:18:48,050 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:18:48,051 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:18:48,051 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:18:48,051 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:18:48,051 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:18:48,051 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:18:48,070 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-11-28 03:18:48,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:18:48,077 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:48,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:48,078 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:48,085 INFO L82 PathProgramCache]: Analyzing trace with hash 2080133685, now seen corresponding path program 1 times [2020-11-28 03:18:48,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:48,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774552463] [2020-11-28 03:18:48,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:48,453 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 03:18:48,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774552463] [2020-11-28 03:18:48,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:48,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:18:48,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011672741] [2020-11-28 03:18:48,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:18:48,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:48,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:18:48,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:18:48,482 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 2 states. [2020-11-28 03:18:48,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:48,513 INFO L93 Difference]: Finished difference Result 153 states and 230 transitions. [2020-11-28 03:18:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:18:48,515 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-28 03:18:48,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:48,528 INFO L225 Difference]: With dead ends: 153 [2020-11-28 03:18:48,528 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 03:18:48,532 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 03:18:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 03:18:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-28 03:18:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 03:18:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-11-28 03:18:48,583 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2020-11-28 03:18:48,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:48,584 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-11-28 03:18:48,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:18:48,584 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-11-28 03:18:48,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:18:48,586 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:48,586 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 03:18:48,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:18:48,587 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:48,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:48,588 INFO L82 PathProgramCache]: Analyzing trace with hash 220788147, now seen corresponding path program 1 times [2020-11-28 03:18:48,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:48,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060316297] [2020-11-28 03:18:48,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:48,748 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 03:18:48,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060316297] [2020-11-28 03:18:48,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:48,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:18:48,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135877471] [2020-11-28 03:18:48,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:18:48,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:48,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:18:48,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:18:48,753 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 3 states. [2020-11-28 03:18:48,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:48,775 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2020-11-28 03:18:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:18:48,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:18:48,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:48,779 INFO L225 Difference]: With dead ends: 74 [2020-11-28 03:18:48,779 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 03:18:48,781 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 03:18:48,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 03:18:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-28 03:18:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 03:18:48,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-11-28 03:18:48,794 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2020-11-28 03:18:48,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:48,795 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-11-28 03:18:48,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:18:48,796 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-11-28 03:18:48,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:18:48,799 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:48,799 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 03:18:48,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:18:48,800 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:48,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:48,802 INFO L82 PathProgramCache]: Analyzing trace with hash 670124178, now seen corresponding path program 1 times [2020-11-28 03:18:48,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:48,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989464704] [2020-11-28 03:18:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:48,999 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 03:18:49,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989464704] [2020-11-28 03:18:49,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:49,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:18:49,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343642359] [2020-11-28 03:18:49,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:18:49,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:49,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:18:49,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:18:49,008 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 6 states. [2020-11-28 03:18:49,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:49,232 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2020-11-28 03:18:49,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:18:49,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-28 03:18:49,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:49,235 INFO L225 Difference]: With dead ends: 62 [2020-11-28 03:18:49,235 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 03:18:49,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:18:49,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 03:18:49,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-28 03:18:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 03:18:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2020-11-28 03:18:49,244 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2020-11-28 03:18:49,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:49,244 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2020-11-28 03:18:49,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:18:49,245 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2020-11-28 03:18:49,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:18:49,246 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:49,246 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] [2020-11-28 03:18:49,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:18:49,247 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:49,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:49,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1804645939, now seen corresponding path program 1 times [2020-11-28 03:18:49,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:49,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640423229] [2020-11-28 03:18:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:49,349 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 03:18:49,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640423229] [2020-11-28 03:18:49,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:49,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:18:49,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240658747] [2020-11-28 03:18:49,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:18:49,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:49,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:18:49,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:18:49,353 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2020-11-28 03:18:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:49,405 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2020-11-28 03:18:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:18:49,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-28 03:18:49,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:49,407 INFO L225 Difference]: With dead ends: 83 [2020-11-28 03:18:49,407 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 03:18:49,408 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 03:18:49,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 03:18:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-11-28 03:18:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 03:18:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2020-11-28 03:18:49,426 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2020-11-28 03:18:49,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:49,427 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2020-11-28 03:18:49,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:18:49,427 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2020-11-28 03:18:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 03:18:49,428 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:49,428 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] [2020-11-28 03:18:49,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:18:49,429 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:49,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:49,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1746371458, now seen corresponding path program 1 times [2020-11-28 03:18:49,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:49,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661942394] [2020-11-28 03:18:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:49,548 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 03:18:49,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661942394] [2020-11-28 03:18:49,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:49,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:18:49,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914811012] [2020-11-28 03:18:49,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:18:49,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:49,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:18:49,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:18:49,552 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2020-11-28 03:18:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:49,627 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2020-11-28 03:18:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:18:49,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-28 03:18:49,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:49,631 INFO L225 Difference]: With dead ends: 139 [2020-11-28 03:18:49,632 INFO L226 Difference]: Without dead ends: 92 [2020-11-28 03:18:49,633 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 03:18:49,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-28 03:18:49,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-11-28 03:18:49,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 03:18:49,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2020-11-28 03:18:49,651 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2020-11-28 03:18:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:49,652 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2020-11-28 03:18:49,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:18:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2020-11-28 03:18:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 03:18:49,654 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:49,654 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] [2020-11-28 03:18:49,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:18:49,654 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:49,655 INFO L82 PathProgramCache]: Analyzing trace with hash 916139585, now seen corresponding path program 1 times [2020-11-28 03:18:49,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:49,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330877087] [2020-11-28 03:18:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:49,798 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 03:18:49,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330877087] [2020-11-28 03:18:49,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:49,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:18:49,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12458639] [2020-11-28 03:18:49,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:18:49,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:49,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:18:49,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:18:49,801 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 8 states. [2020-11-28 03:18:50,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:50,263 INFO L93 Difference]: Finished difference Result 347 states and 497 transitions. [2020-11-28 03:18:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:18:50,265 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-11-28 03:18:50,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:50,269 INFO L225 Difference]: With dead ends: 347 [2020-11-28 03:18:50,269 INFO L226 Difference]: Without dead ends: 297 [2020-11-28 03:18:50,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:18:50,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-11-28 03:18:50,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 140. [2020-11-28 03:18:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-28 03:18:50,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2020-11-28 03:18:50,314 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 29 [2020-11-28 03:18:50,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:50,314 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2020-11-28 03:18:50,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:18:50,315 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2020-11-28 03:18:50,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 03:18:50,317 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:50,318 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] [2020-11-28 03:18:50,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:18:50,318 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:50,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:50,319 INFO L82 PathProgramCache]: Analyzing trace with hash -38679238, now seen corresponding path program 1 times [2020-11-28 03:18:50,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:50,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481189526] [2020-11-28 03:18:50,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:50,397 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 03:18:50,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481189526] [2020-11-28 03:18:50,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:50,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:18:50,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164981623] [2020-11-28 03:18:50,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:18:50,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:50,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:18:50,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:18:50,400 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand 4 states. [2020-11-28 03:18:50,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:50,451 INFO L93 Difference]: Finished difference Result 299 states and 406 transitions. [2020-11-28 03:18:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:18:50,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-11-28 03:18:50,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:50,455 INFO L225 Difference]: With dead ends: 299 [2020-11-28 03:18:50,455 INFO L226 Difference]: Without dead ends: 165 [2020-11-28 03:18:50,456 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 03:18:50,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-11-28 03:18:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 120. [2020-11-28 03:18:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-28 03:18:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 160 transitions. [2020-11-28 03:18:50,487 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 160 transitions. Word has length 44 [2020-11-28 03:18:50,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:50,489 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 160 transitions. [2020-11-28 03:18:50,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:18:50,489 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 160 transitions. [2020-11-28 03:18:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 03:18:50,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:50,499 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] [2020-11-28 03:18:50,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:18:50,499 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:50,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:50,500 INFO L82 PathProgramCache]: Analyzing trace with hash 4866618, now seen corresponding path program 1 times [2020-11-28 03:18:50,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:50,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869696184] [2020-11-28 03:18:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:50,660 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 03:18:50,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869696184] [2020-11-28 03:18:50,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177535685] [2020-11-28 03:18:50,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/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 03:18:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:50,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:18:50,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:51,006 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 03:18:51,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:18:51,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-11-28 03:18:51,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267368721] [2020-11-28 03:18:51,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:18:51,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:51,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:18:51,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:18:51,012 INFO L87 Difference]: Start difference. First operand 120 states and 160 transitions. Second operand 8 states. [2020-11-28 03:18:51,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:51,421 INFO L93 Difference]: Finished difference Result 412 states and 570 transitions. [2020-11-28 03:18:51,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:18:51,421 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-11-28 03:18:51,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:51,424 INFO L225 Difference]: With dead ends: 412 [2020-11-28 03:18:51,424 INFO L226 Difference]: Without dead ends: 321 [2020-11-28 03:18:51,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:18:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-11-28 03:18:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 159. [2020-11-28 03:18:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-11-28 03:18:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 211 transitions. [2020-11-28 03:18:51,487 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 211 transitions. Word has length 45 [2020-11-28 03:18:51,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:51,492 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 211 transitions. [2020-11-28 03:18:51,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:18:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 211 transitions. [2020-11-28 03:18:51,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-28 03:18:51,494 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:51,494 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 03:18:51,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-11-28 03:18:51,709 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:51,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:51,710 INFO L82 PathProgramCache]: Analyzing trace with hash -2052342276, now seen corresponding path program 2 times [2020-11-28 03:18:51,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:51,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299424144] [2020-11-28 03:18:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:51,828 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:51,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:52,023 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:52,024 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:18:52,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:18:52,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:18:52 BoogieIcfgContainer [2020-11-28 03:18:52,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:18:52,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:18:52,224 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:18:52,224 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:18:52,225 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:47" (3/4) ... [2020-11-28 03:18:52,227 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:18:52,454 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_525a5fc2-4985-41cc-827b-e69da1e4ae07/bin/uautomizer/witness.graphml [2020-11-28 03:18:52,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:18:52,456 INFO L168 Benchmark]: Toolchain (without parser) took 6462.08 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 74.5 MB in the beginning and 98.5 MB in the end (delta: -24.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:52,457 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:52,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.75 ms. Allocated memory is still 102.8 MB. Free memory was 74.3 MB in the beginning and 70.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:52,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.80 ms. Allocated memory is still 102.8 MB. Free memory was 70.9 MB in the beginning and 68.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:52,461 INFO L168 Benchmark]: Boogie Preprocessor took 70.05 ms. Allocated memory is still 102.8 MB. Free memory was 68.0 MB in the beginning and 65.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:52,462 INFO L168 Benchmark]: RCFGBuilder took 1093.77 ms. Allocated memory is still 102.8 MB. Free memory was 65.9 MB in the beginning and 79.0 MB in the end (delta: -13.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:52,462 INFO L168 Benchmark]: TraceAbstraction took 4258.72 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 79.0 MB in the beginning and 121.6 MB in the end (delta: -42.5 MB). Peak memory consumption was 71.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:52,463 INFO L168 Benchmark]: Witness Printer took 230.61 ms. Allocated memory is still 148.9 MB. Free memory was 121.6 MB in the beginning and 98.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:52,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 673.75 ms. Allocated memory is still 102.8 MB. Free memory was 74.3 MB in the beginning and 70.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 123.80 ms. Allocated memory is still 102.8 MB. Free memory was 70.9 MB in the beginning and 68.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.05 ms. Allocated memory is still 102.8 MB. Free memory was 68.0 MB in the beginning and 65.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1093.77 ms. Allocated memory is still 102.8 MB. Free memory was 65.9 MB in the beginning and 79.0 MB in the end (delta: -13.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4258.72 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 79.0 MB in the beginning and 121.6 MB in the end (delta: -42.5 MB). Peak memory consumption was 71.7 MB. Max. memory is 16.1 GB. * Witness Printer took 230.61 ms. Allocated memory is still 148.9 MB. Free memory was 121.6 MB in the beginning and 98.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 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: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L408] int cleanupTimeShifts = 4; [L617] int waterLevel = 1; [L618] int methaneLevelCritical = 0; [L714] int pumpRunning = 0; [L715] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L489] int retValue_acc ; [L490] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L496] tmp = valid_product() [L498] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L557] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L559] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L635] COND TRUE waterLevel < 2 [L636] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L722] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L729] COND TRUE \read(systemActive) [L751] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L754] COND TRUE ! pumpRunning [L848] int retValue_acc ; [L849] int tmp ; [L850] int tmp___0 ; [L697] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L700] COND FALSE !(waterLevel < 2) [L704] retValue_acc = 0 [L705] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L854] tmp = isHighWaterSensorDry() [L856] COND FALSE !(\read(tmp)) [L859] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L861] retValue_acc = tmp___0 [L862] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L756] tmp = isHighWaterLevel() [L758] COND TRUE \read(tmp) [L779] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L877] int tmp ; [L878] int tmp___0 ; [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L882] tmp = getWaterLevel() [L884] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L557] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L559] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L565] tmp = __VERIFIER_nondet_int() [L567] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L722] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L623] COND TRUE waterLevel > 0 [L624] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L729] COND TRUE \read(systemActive) [L751] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L754] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L877] int tmp ; [L878] int tmp___0 ; [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L882] tmp = getWaterLevel() [L884] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L557] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L559] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L565] tmp = __VERIFIER_nondet_int() [L567] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L722] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L623] COND TRUE waterLevel > 0 [L624] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L729] COND TRUE \read(systemActive) [L751] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L754] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L877] int tmp ; [L878] int tmp___0 ; [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L882] tmp = getWaterLevel() [L884] COND TRUE tmp == 0 [L803] int retValue_acc ; [L806] retValue_acc = pumpRunning [L807] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L886] tmp___0 = isPumpRunning() [L888] 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_product33.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, 81 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.9s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 554 SDtfs, 937 SDslu, 987 SDs, 0 SdLazy, 191 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 402 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 16788 SizeOfPredicates, 4 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 36/42 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...