./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product63.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_2f4fd39f-898c-4738-8815-52174645af0e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/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 7819fbe7d63fc779c0cf34c98e41b55fde6ca155 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-29 18:15:05,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:15:05,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:15:05,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:15:05,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:15:05,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:15:05,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:15:05,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:15:05,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:15:05,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:15:05,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:15:05,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:15:05,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:15:05,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:15:05,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:15:05,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:15:05,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:15:05,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:15:05,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:15:05,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:15:05,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:15:05,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:15:05,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:15:05,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:15:05,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:15:05,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:15:05,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:15:05,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:15:05,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:15:05,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:15:05,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:15:05,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:15:05,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:15:05,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:15:05,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:15:05,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:15:05,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:15:05,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:15:05,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:15:05,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:15:05,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:15:05,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:15:05,790 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:15:05,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:15:05,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:15:05,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:15:05,792 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:15:05,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:15:05,797 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:15:05,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:15:05,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:15:05,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:15:05,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:15:05,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:15:05,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:15:05,799 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:15:05,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:15:05,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:15:05,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:15:05,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:15:05,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:15:05,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:15:05,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:15:05,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:15:05,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:15:05,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:15:05,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:15:05,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:15:05,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:15:05,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:15:05,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:15:05,803 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_2f4fd39f-898c-4738-8815-52174645af0e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7819fbe7d63fc779c0cf34c98e41b55fde6ca155 [2020-11-29 18:15:06,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:15:06,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:15:06,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:15:06,081 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:15:06,081 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:15:06,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c [2020-11-29 18:15:06,200 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/bin/uautomizer/data/c00cf47ac/de6fb116fdc345d8b41918bdbc1ef8f9/FLAGdacdd28c6 [2020-11-29 18:15:06,896 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:15:06,897 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c [2020-11-29 18:15:06,913 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/bin/uautomizer/data/c00cf47ac/de6fb116fdc345d8b41918bdbc1ef8f9/FLAGdacdd28c6 [2020-11-29 18:15:07,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/bin/uautomizer/data/c00cf47ac/de6fb116fdc345d8b41918bdbc1ef8f9 [2020-11-29 18:15:07,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:15:07,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:15:07,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:15:07,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:15:07,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:15:07,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:15:07" (1/1) ... [2020-11-29 18:15:07,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da20d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:07, skipping insertion in model container [2020-11-29 18:15:07,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:15:07" (1/1) ... [2020-11-29 18:15:07,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:15:07,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:15:07,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:15:07,732 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:15:07,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:15:07,869 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:15:07,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:07 WrapperNode [2020-11-29 18:15:07,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:15:07,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:15:07,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:15:07,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:15:07,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:07" (1/1) ... [2020-11-29 18:15:07,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:07" (1/1) ... [2020-11-29 18:15:07,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:15:07,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:15:07,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:15:07,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:15:07,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:07" (1/1) ... [2020-11-29 18:15:07,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:07" (1/1) ... [2020-11-29 18:15:07,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:07" (1/1) ... [2020-11-29 18:15:07,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:07" (1/1) ... [2020-11-29 18:15:08,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:07" (1/1) ... [2020-11-29 18:15:08,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:07" (1/1) ... [2020-11-29 18:15:08,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:07" (1/1) ... [2020-11-29 18:15:08,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:15:08,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:15:08,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:15:08,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:15:08,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/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 [2020-11-29 18:15:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:15:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:15:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:15:08,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:15:09,809 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:15:09,809 INFO L298 CfgBuilder]: Removed 364 assume(true) statements. [2020-11-29 18:15:09,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:15:09 BoogieIcfgContainer [2020-11-29 18:15:09,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:15:09,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:15:09,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:15:09,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:15:09,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:15:07" (1/3) ... [2020-11-29 18:15:09,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70190b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:15:09, skipping insertion in model container [2020-11-29 18:15:09,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:07" (2/3) ... [2020-11-29 18:15:09,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70190b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:15:09, skipping insertion in model container [2020-11-29 18:15:09,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:15:09" (3/3) ... [2020-11-29 18:15:09,821 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product63.cil.c [2020-11-29 18:15:09,833 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:15:09,838 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 18:15:09,851 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 18:15:09,879 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:15:09,879 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:15:09,879 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:15:09,879 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:15:09,879 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:15:09,880 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:15:09,880 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:15:09,880 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:15:09,900 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-11-29 18:15:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:15:09,908 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:09,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:09,909 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:09,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:09,916 INFO L82 PathProgramCache]: Analyzing trace with hash -213727833, now seen corresponding path program 1 times [2020-11-29 18:15:09,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:09,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694618416] [2020-11-29 18:15:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:10,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694618416] [2020-11-29 18:15:10,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:15:10,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:15:10,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866627931] [2020-11-29 18:15:10,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:15:10,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:10,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:15:10,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:15:10,275 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 2 states. [2020-11-29 18:15:10,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:10,353 INFO L93 Difference]: Finished difference Result 463 states and 692 transitions. [2020-11-29 18:15:10,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:15:10,359 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-11-29 18:15:10,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:15:10,389 INFO L225 Difference]: With dead ends: 463 [2020-11-29 18:15:10,389 INFO L226 Difference]: Without dead ends: 229 [2020-11-29 18:15:10,402 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 [2020-11-29 18:15:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-11-29 18:15:10,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-11-29 18:15:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-11-29 18:15:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 336 transitions. [2020-11-29 18:15:10,472 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 336 transitions. Word has length 18 [2020-11-29 18:15:10,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:15:10,472 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 336 transitions. [2020-11-29 18:15:10,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:15:10,473 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 336 transitions. [2020-11-29 18:15:10,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 18:15:10,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:10,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:10,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:15:10,475 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:10,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:10,476 INFO L82 PathProgramCache]: Analyzing trace with hash 811847301, now seen corresponding path program 1 times [2020-11-29 18:15:10,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:10,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211051527] [2020-11-29 18:15:10,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:10,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211051527] [2020-11-29 18:15:10,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:15:10,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:15:10,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349356218] [2020-11-29 18:15:10,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:15:10,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:10,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:15:10,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:15:10,675 INFO L87 Difference]: Start difference. First operand 229 states and 336 transitions. Second operand 3 states. [2020-11-29 18:15:10,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:10,696 INFO L93 Difference]: Finished difference Result 229 states and 336 transitions. [2020-11-29 18:15:10,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:15:10,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-29 18:15:10,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:15:10,699 INFO L225 Difference]: With dead ends: 229 [2020-11-29 18:15:10,699 INFO L226 Difference]: Without dead ends: 87 [2020-11-29 18:15:10,701 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 [2020-11-29 18:15:10,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-29 18:15:10,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-29 18:15:10,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-29 18:15:10,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 127 transitions. [2020-11-29 18:15:10,711 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 127 transitions. Word has length 19 [2020-11-29 18:15:10,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:15:10,712 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 127 transitions. [2020-11-29 18:15:10,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:15:10,712 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 127 transitions. [2020-11-29 18:15:10,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 18:15:10,714 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:10,714 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] [2020-11-29 18:15:10,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:15:10,715 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:10,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:10,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1668670364, now seen corresponding path program 1 times [2020-11-29 18:15:10,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:10,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569205302] [2020-11-29 18:15:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:10,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569205302] [2020-11-29 18:15:10,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:15:10,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:15:10,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988629468] [2020-11-29 18:15:10,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:15:10,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:10,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:15:10,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:15:10,866 INFO L87 Difference]: Start difference. First operand 87 states and 127 transitions. Second operand 3 states. [2020-11-29 18:15:10,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:10,914 INFO L93 Difference]: Finished difference Result 249 states and 369 transitions. [2020-11-29 18:15:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:15:10,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-29 18:15:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:15:10,924 INFO L225 Difference]: With dead ends: 249 [2020-11-29 18:15:10,925 INFO L226 Difference]: Without dead ends: 168 [2020-11-29 18:15:10,928 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 [2020-11-29 18:15:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-11-29 18:15:10,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2020-11-29 18:15:10,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-11-29 18:15:10,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 243 transitions. [2020-11-29 18:15:10,973 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 243 transitions. Word has length 24 [2020-11-29 18:15:10,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:15:10,973 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 243 transitions. [2020-11-29 18:15:10,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:15:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 243 transitions. [2020-11-29 18:15:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 18:15:10,975 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:10,975 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] [2020-11-29 18:15:10,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:15:10,976 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1791027038, now seen corresponding path program 1 times [2020-11-29 18:15:10,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:10,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967844484] [2020-11-29 18:15:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:11,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967844484] [2020-11-29 18:15:11,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:15:11,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:15:11,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202478161] [2020-11-29 18:15:11,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:15:11,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:11,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:15:11,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:15:11,081 INFO L87 Difference]: Start difference. First operand 164 states and 243 transitions. Second operand 3 states. [2020-11-29 18:15:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:11,153 INFO L93 Difference]: Finished difference Result 337 states and 504 transitions. [2020-11-29 18:15:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:15:11,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-29 18:15:11,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:15:11,173 INFO L225 Difference]: With dead ends: 337 [2020-11-29 18:15:11,174 INFO L226 Difference]: Without dead ends: 179 [2020-11-29 18:15:11,175 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 [2020-11-29 18:15:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-29 18:15:11,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-11-29 18:15:11,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-11-29 18:15:11,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 255 transitions. [2020-11-29 18:15:11,203 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 255 transitions. Word has length 27 [2020-11-29 18:15:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:15:11,204 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 255 transitions. [2020-11-29 18:15:11,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:15:11,205 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 255 transitions. [2020-11-29 18:15:11,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 18:15:11,209 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:11,210 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] [2020-11-29 18:15:11,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 18:15:11,210 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:11,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:11,211 INFO L82 PathProgramCache]: Analyzing trace with hash 234819321, now seen corresponding path program 1 times [2020-11-29 18:15:11,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:11,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850485682] [2020-11-29 18:15:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:11,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850485682] [2020-11-29 18:15:11,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:15:11,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:15:11,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056239967] [2020-11-29 18:15:11,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:15:11,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:11,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:15:11,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:15:11,345 INFO L87 Difference]: Start difference. First operand 177 states and 255 transitions. Second operand 5 states. [2020-11-29 18:15:11,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:11,533 INFO L93 Difference]: Finished difference Result 899 states and 1311 transitions. [2020-11-29 18:15:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:15:11,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-11-29 18:15:11,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:15:11,541 INFO L225 Difference]: With dead ends: 899 [2020-11-29 18:15:11,542 INFO L226 Difference]: Without dead ends: 728 [2020-11-29 18:15:11,543 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 [2020-11-29 18:15:11,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-11-29 18:15:11,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 276. [2020-11-29 18:15:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-11-29 18:15:11,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 388 transitions. [2020-11-29 18:15:11,596 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 388 transitions. Word has length 27 [2020-11-29 18:15:11,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:15:11,597 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 388 transitions. [2020-11-29 18:15:11,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:15:11,597 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 388 transitions. [2020-11-29 18:15:11,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 18:15:11,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:11,599 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] [2020-11-29 18:15:11,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 18:15:11,600 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:11,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:11,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1465444421, now seen corresponding path program 1 times [2020-11-29 18:15:11,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:11,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919827959] [2020-11-29 18:15:11,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:11,719 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:11,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:11,867 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:11,868 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:15:11,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 18:15:12,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:15:12 BoogieIcfgContainer [2020-11-29 18:15:12,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:15:12,021 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:15:12,021 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:15:12,022 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:15:12,023 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:15:09" (3/4) ... [2020-11-29 18:15:12,025 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 18:15:12,167 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2f4fd39f-898c-4738-8815-52174645af0e/bin/uautomizer/witness.graphml [2020-11-29 18:15:12,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:15:12,172 INFO L168 Benchmark]: Toolchain (without parser) took 4980.28 ms. Allocated memory was 94.4 MB in the beginning and 134.2 MB in the end (delta: 39.8 MB). Free memory was 61.7 MB in the beginning and 82.4 MB in the end (delta: -20.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:12,172 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 73.4 MB. Free memory is still 32.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:15:12,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.70 ms. Allocated memory is still 94.4 MB. Free memory was 61.4 MB in the beginning and 60.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:12,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.24 ms. Allocated memory is still 94.4 MB. Free memory was 60.4 MB in the beginning and 54.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:12,174 INFO L168 Benchmark]: Boogie Preprocessor took 81.55 ms. Allocated memory is still 94.4 MB. Free memory was 54.1 MB in the beginning and 49.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:12,175 INFO L168 Benchmark]: RCFGBuilder took 1759.74 ms. Allocated memory was 94.4 MB in the beginning and 134.2 MB in the end (delta: 39.8 MB). Free memory was 49.8 MB in the beginning and 71.0 MB in the end (delta: -21.2 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:12,175 INFO L168 Benchmark]: TraceAbstraction took 2206.33 ms. Allocated memory is still 134.2 MB. Free memory was 70.2 MB in the beginning and 93.9 MB in the end (delta: -23.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:12,176 INFO L168 Benchmark]: Witness Printer took 146.47 ms. Allocated memory is still 134.2 MB. Free memory was 93.9 MB in the beginning and 82.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:12,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 73.4 MB. Free memory is still 32.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 679.70 ms. Allocated memory is still 94.4 MB. Free memory was 61.4 MB in the beginning and 60.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.24 ms. Allocated memory is still 94.4 MB. Free memory was 60.4 MB in the beginning and 54.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.55 ms. Allocated memory is still 94.4 MB. Free memory was 54.1 MB in the beginning and 49.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1759.74 ms. Allocated memory was 94.4 MB in the beginning and 134.2 MB in the end (delta: 39.8 MB). Free memory was 49.8 MB in the beginning and 71.0 MB in the end (delta: -21.2 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2206.33 ms. Allocated memory is still 134.2 MB. Free memory was 70.2 MB in the beginning and 93.9 MB in the end (delta: -23.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. * Witness Printer took 146.47 ms. Allocated memory is still 134.2 MB. Free memory was 93.9 MB in the beginning and 82.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L190] int pumpRunning = 0; [L191] int systemActive = 1; [L514] int waterLevel = 1; [L515] int methaneLevelCritical = 0; [L829] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L447] int splverifierCounter ; [L448] int tmp ; [L449] int tmp___0 ; [L450] int tmp___1 ; [L451] int tmp___2 ; [L454] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L456] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L458] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L464] tmp = __VERIFIER_nondet_int() [L466] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L532] COND TRUE waterLevel < 2 [L533] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L474] tmp___0 = __VERIFIER_nondet_int() [L476] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L484] tmp___2 = __VERIFIER_nondet_int() [L486] COND FALSE !(\read(tmp___2)) [L490] tmp___1 = __VERIFIER_nondet_int() [L492] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L434] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L441] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L198] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L205] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L627] int tmp ; [L628] int tmp___0 ; [L629] int tmp___1 ; [L553] int retValue_acc ; [L556] retValue_acc = methaneLevelCritical [L557] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L633] tmp = isMethaneLevelCritical() [L635] COND FALSE !(\read(tmp)) [L585] int retValue_acc ; [L588] retValue_acc = waterLevel [L589] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L639] tmp___0 = getWaterLevel() [L641] COND TRUE tmp___0 == 2 [L348] int retValue_acc ; [L351] retValue_acc = pumpRunning [L352] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L643] tmp___1 = isPumpRunning() [L645] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L3] __assert_fail("0", "minepump_spec3_product63.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 236 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 869 SDtfs, 682 SDslu, 599 SDs, 0 SdLazy, 73 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 458 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 5388 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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...