./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product02.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product02.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8ef3a2966212a62c51376d0bc71e8b6c4dafa6b54b639f6f7c53dd815ae9709e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:11:22,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:11:22,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:11:22,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:11:22,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:11:22,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:11:22,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:11:22,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:11:22,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:11:22,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:11:22,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:11:22,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:11:22,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:11:22,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:11:22,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:11:22,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:11:22,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:11:22,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:11:22,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:11:22,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:11:22,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:11:22,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:11:22,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:11:22,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:11:22,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:11:22,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:11:22,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:11:22,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:11:22,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:11:22,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:11:22,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:11:22,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:11:22,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:11:22,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:11:22,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:11:22,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:11:22,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:11:22,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:11:22,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:11:22,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:11:22,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:11:22,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 20:11:22,189 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:11:22,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:11:22,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:11:22,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:11:22,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:11:22,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:11:22,191 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:11:22,191 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:11:22,191 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:11:22,191 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:11:22,191 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:11:22,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:11:22,192 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:11:22,192 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:11:22,192 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:11:22,192 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:11:22,192 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:11:22,193 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:11:22,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:11:22,193 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:11:22,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:11:22,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:11:22,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:11:22,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:11:22,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:11:22,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:11:22,201 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:11:22,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:11:22,202 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:11:22,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:11:22,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:11:22,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:11:22,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:11:22,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:11:22,203 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:11:22,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:11:22,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:11:22,205 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:11:22,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:11:22,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:11:22,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:11:22,205 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_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ef3a2966212a62c51376d0bc71e8b6c4dafa6b54b639f6f7c53dd815ae9709e [2022-11-16 20:11:22,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:11:22,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:11:22,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:11:22,545 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:11:22,546 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:11:22,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/product-lines/minepump_spec4_product02.cil.c [2022-11-16 20:11:22,621 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/data/5224a71c5/8f5de8f830694bfab31512a4715b0ee1/FLAGf4692a6d6 [2022-11-16 20:11:23,209 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:11:23,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/sv-benchmarks/c/product-lines/minepump_spec4_product02.cil.c [2022-11-16 20:11:23,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/data/5224a71c5/8f5de8f830694bfab31512a4715b0ee1/FLAGf4692a6d6 [2022-11-16 20:11:23,487 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/data/5224a71c5/8f5de8f830694bfab31512a4715b0ee1 [2022-11-16 20:11:23,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:11:23,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:11:23,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:11:23,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:11:23,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:11:23,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:11:23" (1/1) ... [2022-11-16 20:11:23,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:23, skipping insertion in model container [2022-11-16 20:11:23,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:11:23" (1/1) ... [2022-11-16 20:11:23,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:11:23,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:11:23,806 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/sv-benchmarks/c/product-lines/minepump_spec4_product02.cil.c[1605,1618] [2022-11-16 20:11:23,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:11:23,961 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:11:23,996 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/sv-benchmarks/c/product-lines/minepump_spec4_product02.cil.c[1605,1618] [2022-11-16 20:11:24,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:11:24,091 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:11:24,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:24 WrapperNode [2022-11-16 20:11:24,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:11:24,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:11:24,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:11:24,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:11:24,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:24" (1/1) ... [2022-11-16 20:11:24,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:24" (1/1) ... [2022-11-16 20:11:24,167 INFO L138 Inliner]: procedures = 50, calls = 145, calls flagged for inlining = 19, calls inlined = 15, statements flattened = 189 [2022-11-16 20:11:24,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:11:24,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:11:24,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:11:24,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:11:24,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:24" (1/1) ... [2022-11-16 20:11:24,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:24" (1/1) ... [2022-11-16 20:11:24,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:24" (1/1) ... [2022-11-16 20:11:24,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:24" (1/1) ... [2022-11-16 20:11:24,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:24" (1/1) ... [2022-11-16 20:11:24,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:24" (1/1) ... [2022-11-16 20:11:24,205 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:24" (1/1) ... [2022-11-16 20:11:24,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:24" (1/1) ... [2022-11-16 20:11:24,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:11:24,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:11:24,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:11:24,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:11:24,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:24" (1/1) ... [2022-11-16 20:11:24,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:11:24,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:11:24,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:11:24,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:11:24,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:11:24,325 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-16 20:11:24,325 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-16 20:11:24,325 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-16 20:11:24,325 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-16 20:11:24,325 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-16 20:11:24,326 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-16 20:11:24,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:11:24,326 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-16 20:11:24,326 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-16 20:11:24,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:11:24,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:11:24,429 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:11:24,431 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:11:24,751 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:11:24,888 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:11:24,894 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 20:11:24,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:11:24 BoogieIcfgContainer [2022-11-16 20:11:24,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:11:24,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:11:24,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:11:24,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:11:24,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:11:23" (1/3) ... [2022-11-16 20:11:24,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7d5f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:11:24, skipping insertion in model container [2022-11-16 20:11:24,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:24" (2/3) ... [2022-11-16 20:11:24,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7d5f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:11:24, skipping insertion in model container [2022-11-16 20:11:24,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:11:24" (3/3) ... [2022-11-16 20:11:24,913 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product02.cil.c [2022-11-16 20:11:24,932 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:11:24,932 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:11:24,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:11:24,994 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@24b978f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:11:24,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:11:24,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 23 states have (on average 1.434782608695652) internal successors, (33), 27 states have internal predecessors, (33), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 20:11:25,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 20:11:25,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:25,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:11:25,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:11:25,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:25,014 INFO L85 PathProgramCache]: Analyzing trace with hash 831723763, now seen corresponding path program 1 times [2022-11-16 20:11:25,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:25,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162908616] [2022-11-16 20:11:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:25,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:25,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:25,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:25,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162908616] [2022-11-16 20:11:25,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162908616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:25,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:25,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:11:25,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224084946] [2022-11-16 20:11:25,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:25,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 20:11:25,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:25,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 20:11:25,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:11:25,325 INFO L87 Difference]: Start difference. First operand has 35 states, 23 states have (on average 1.434782608695652) internal successors, (33), 27 states have internal predecessors, (33), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:25,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:25,381 INFO L93 Difference]: Finished difference Result 68 states and 91 transitions. [2022-11-16 20:11:25,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 20:11:25,384 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 20:11:25,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:25,391 INFO L225 Difference]: With dead ends: 68 [2022-11-16 20:11:25,391 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 20:11:25,395 INFO L412 NwaCegarLoop]: 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 [2022-11-16 20:11:25,398 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:25,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:11:25,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 20:11:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-16 20:11:25,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 20:11:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-11-16 20:11:25,438 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 10 [2022-11-16 20:11:25,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:25,438 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-16 20:11:25,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:25,439 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-11-16 20:11:25,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 20:11:25,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:25,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:11:25,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:11:25,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:11:25,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash 757406308, now seen corresponding path program 1 times [2022-11-16 20:11:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:25,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622220814] [2022-11-16 20:11:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:25,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:25,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622220814] [2022-11-16 20:11:25,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622220814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:25,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:25,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:11:25,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142267750] [2022-11-16 20:11:25,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:25,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:11:25,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:25,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:11:25,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:11:25,600 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:25,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:25,639 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-11-16 20:11:25,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:11:25,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 20:11:25,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:25,641 INFO L225 Difference]: With dead ends: 37 [2022-11-16 20:11:25,641 INFO L226 Difference]: Without dead ends: 22 [2022-11-16 20:11:25,641 INFO L412 NwaCegarLoop]: 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 [2022-11-16 20:11:25,643 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:25,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 23 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:11:25,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-16 20:11:25,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-16 20:11:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:11:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-16 20:11:25,649 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 11 [2022-11-16 20:11:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:25,649 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-16 20:11:25,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:25,649 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-16 20:11:25,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 20:11:25,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:25,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:11:25,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:11:25,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:11:25,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:25,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1209508822, now seen corresponding path program 1 times [2022-11-16 20:11:25,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:25,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597685049] [2022-11-16 20:11:25,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:25,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:25,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:25,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:25,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597685049] [2022-11-16 20:11:25,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597685049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:25,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:25,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:11:25,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159519769] [2022-11-16 20:11:25,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:25,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:11:25,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:25,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:11:25,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:11:25,960 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:26,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:26,021 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2022-11-16 20:11:26,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:11:26,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 20:11:26,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:26,025 INFO L225 Difference]: With dead ends: 58 [2022-11-16 20:11:26,025 INFO L226 Difference]: Without dead ends: 38 [2022-11-16 20:11:26,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:11:26,027 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:26,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 52 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:11:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-16 20:11:26,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-11-16 20:11:26,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.24) internal successors, (31), 29 states have internal predecessors, (31), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 20:11:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-11-16 20:11:26,038 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 13 [2022-11-16 20:11:26,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:26,039 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-11-16 20:11:26,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:26,039 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-11-16 20:11:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 20:11:26,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:26,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:11:26,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:11:26,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:11:26,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:26,042 INFO L85 PathProgramCache]: Analyzing trace with hash -252546858, now seen corresponding path program 1 times [2022-11-16 20:11:26,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:26,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47924359] [2022-11-16 20:11:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:26,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:26,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:26,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47924359] [2022-11-16 20:11:26,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47924359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:26,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:26,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 20:11:26,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769794176] [2022-11-16 20:11:26,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:26,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 20:11:26,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:26,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 20:11:26,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:11:26,362 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 20:11:26,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:26,551 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-11-16 20:11:26,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 20:11:26,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-16 20:11:26,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:26,553 INFO L225 Difference]: With dead ends: 56 [2022-11-16 20:11:26,553 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 20:11:26,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-16 20:11:26,567 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 43 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:26,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 60 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:11:26,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 20:11:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 20:11:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:26,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 20:11:26,574 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-11-16 20:11:26,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:26,574 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 20:11:26,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 20:11:26,575 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 20:11:26,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 20:11:26,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 20:11:26,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:11:26,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 20:11:26,913 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 319 330) the Hoare annotation is: true [2022-11-16 20:11:26,913 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 319 330) no Hoare annotation was computed. [2022-11-16 20:11:26,914 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 766 795) no Hoare annotation was computed. [2022-11-16 20:11:26,914 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 766 795) the Hoare annotation is: true [2022-11-16 20:11:26,914 INFO L902 garLoopResultBuilder]: At program point L791(lines 766 795) the Hoare annotation is: true [2022-11-16 20:11:26,914 INFO L899 garLoopResultBuilder]: For program point L787(line 787) no Hoare annotation was computed. [2022-11-16 20:11:26,914 INFO L899 garLoopResultBuilder]: For program point L780(lines 780 784) no Hoare annotation was computed. [2022-11-16 20:11:26,914 INFO L902 garLoopResultBuilder]: At program point L780-1(lines 780 784) the Hoare annotation is: true [2022-11-16 20:11:26,915 INFO L902 garLoopResultBuilder]: At program point L776-2(lines 776 790) the Hoare annotation is: true [2022-11-16 20:11:26,916 INFO L902 garLoopResultBuilder]: At program point L772(line 772) the Hoare annotation is: true [2022-11-16 20:11:26,916 INFO L899 garLoopResultBuilder]: For program point L772-1(line 772) no Hoare annotation was computed. [2022-11-16 20:11:26,916 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0)))) (and (or .cse0 (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= |old(~waterLevel~0)| 1))))) [2022-11-16 20:11:26,916 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 391) no Hoare annotation was computed. [2022-11-16 20:11:26,917 INFO L895 garLoopResultBuilder]: At program point L381(lines 381 394) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) (and (<= 1 |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1|) (= ~waterLevel~0 1))) (or .cse0 (and (<= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1|) (= |old(~waterLevel~0)| ~waterLevel~0)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-16 20:11:26,919 INFO L895 garLoopResultBuilder]: At program point L381-1(lines 373 397) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) (and (<= 1 |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1|) (= ~waterLevel~0 1))) (or .cse0 (and (<= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1|) (= |old(~waterLevel~0)| ~waterLevel~0)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-16 20:11:26,919 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 110 133) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0)))) (and (or .cse0 (= |old(~waterLevel~0)| ~waterLevel~0) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)))) [2022-11-16 20:11:26,920 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 110 133) no Hoare annotation was computed. [2022-11-16 20:11:26,920 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-16 20:11:26,920 INFO L895 garLoopResultBuilder]: At program point L283(lines 234 284) the Hoare annotation is: false [2022-11-16 20:11:26,920 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 261) no Hoare annotation was computed. [2022-11-16 20:11:26,921 INFO L895 garLoopResultBuilder]: At program point L255-1(lines 255 261) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse0 (<= 2 ~waterLevel~0) .cse1))) [2022-11-16 20:11:26,921 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-16 20:11:26,922 INFO L895 garLoopResultBuilder]: At program point L280(lines 235 282) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse0 (<= 2 ~waterLevel~0) .cse1))) [2022-11-16 20:11:26,923 INFO L895 garLoopResultBuilder]: At program point L247(line 247) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse0 (<= 2 ~waterLevel~0) .cse1))) [2022-11-16 20:11:26,924 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 20:11:26,924 INFO L895 garLoopResultBuilder]: At program point L847(lines 847 854) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1)) [2022-11-16 20:11:26,924 INFO L895 garLoopResultBuilder]: At program point L273-2(lines 265 278) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse0 (<= 2 ~waterLevel~0) .cse1))) [2022-11-16 20:11:26,924 INFO L902 garLoopResultBuilder]: At program point L847-2(lines 847 854) the Hoare annotation is: true [2022-11-16 20:11:26,924 INFO L899 garLoopResultBuilder]: For program point L236(lines 235 282) no Hoare annotation was computed. [2022-11-16 20:11:26,925 INFO L895 garLoopResultBuilder]: At program point L257(line 257) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse0 (<= 2 ~waterLevel~0) .cse1))) [2022-11-16 20:11:26,925 INFO L902 garLoopResultBuilder]: At program point L286(lines 225 290) the Hoare annotation is: true [2022-11-16 20:11:26,925 INFO L899 garLoopResultBuilder]: For program point L245(lines 245 251) no Hoare annotation was computed. [2022-11-16 20:11:26,925 INFO L899 garLoopResultBuilder]: For program point L245-1(lines 245 251) no Hoare annotation was computed. [2022-11-16 20:11:26,925 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 307 318) no Hoare annotation was computed. [2022-11-16 20:11:26,926 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 307 318) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0)))) (and (or .cse0 (= |old(~waterLevel~0)| ~waterLevel~0) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)))) [2022-11-16 20:11:26,929 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-16 20:11:26,935 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:11:26,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:11:26 BoogieIcfgContainer [2022-11-16 20:11:26,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:11:26,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:11:26,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:11:26,953 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:11:26,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:11:24" (3/4) ... [2022-11-16 20:11:26,956 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 20:11:26,962 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-16 20:11:26,962 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-16 20:11:26,962 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-16 20:11:26,962 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-16 20:11:26,969 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 66 nodes and edges [2022-11-16 20:11:26,969 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-16 20:11:26,969 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-16 20:11:26,971 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 20:11:26,971 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 20:11:26,971 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 20:11:26,972 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 20:11:27,004 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(pumpRunning == 0) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel))) && ((!(pumpRunning == 0) || !(\old(waterLevel) == 1)) || waterLevel == 1) [2022-11-16 20:11:27,009 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(pumpRunning == 0) || !(\old(waterLevel) == 1)) || (1 <= tmp && waterLevel == 1)) && ((!(pumpRunning == 0) || (2 <= tmp && \old(waterLevel) == waterLevel)) || !(2 <= \old(waterLevel))) [2022-11-16 20:11:27,010 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(pumpRunning == 0) || !(\old(waterLevel) == 1)) || (1 <= tmp && waterLevel == 1)) && ((!(pumpRunning == 0) || (2 <= tmp && \old(waterLevel) == waterLevel)) || !(2 <= \old(waterLevel))) [2022-11-16 20:11:27,010 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(pumpRunning == 0) || !(2 <= \old(waterLevel))) && (!(pumpRunning == 0) || !(\old(waterLevel) == 1)) [2022-11-16 20:11:27,046 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 20:11:27,047 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:11:27,048 INFO L158 Benchmark]: Toolchain (without parser) took 3554.59ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 83.2MB in the beginning and 104.6MB in the end (delta: -21.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-11-16 20:11:27,048 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 101.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:11:27,049 INFO L158 Benchmark]: CACSL2BoogieTranslator took 597.02ms. Allocated memory is still 121.6MB. Free memory was 83.1MB in the beginning and 90.8MB in the end (delta: -7.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 20:11:27,049 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.24ms. Allocated memory is still 121.6MB. Free memory was 90.8MB in the beginning and 88.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:11:27,049 INFO L158 Benchmark]: Boogie Preprocessor took 56.59ms. Allocated memory is still 121.6MB. Free memory was 88.5MB in the beginning and 87.1MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 20:11:27,050 INFO L158 Benchmark]: RCFGBuilder took 673.05ms. Allocated memory is still 121.6MB. Free memory was 87.1MB in the beginning and 60.5MB in the end (delta: 26.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-16 20:11:27,050 INFO L158 Benchmark]: TraceAbstraction took 2048.34ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 59.9MB in the beginning and 108.8MB in the end (delta: -48.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:11:27,051 INFO L158 Benchmark]: Witness Printer took 94.59ms. Allocated memory is still 151.0MB. Free memory was 108.8MB in the beginning and 104.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 20:11:27,054 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 101.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 597.02ms. Allocated memory is still 121.6MB. Free memory was 83.1MB in the beginning and 90.8MB in the end (delta: -7.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.24ms. Allocated memory is still 121.6MB. Free memory was 90.8MB in the beginning and 88.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.59ms. Allocated memory is still 121.6MB. Free memory was 88.5MB in the beginning and 87.1MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 673.05ms. Allocated memory is still 121.6MB. Free memory was 87.1MB in the beginning and 60.5MB in the end (delta: 26.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2048.34ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 59.9MB in the beginning and 108.8MB in the end (delta: -48.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 94.59ms. Allocated memory is still 151.0MB. Free memory was 108.8MB in the beginning and 104.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 165 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 125 IncrementalHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 85 mSDtfsCounter, 125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=3, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 66 PreInvPairs, 81 NumberOfFragments, 257 HoareAnnotationTreeSize, 66 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 72 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 181 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: (!(pumpRunning == 0) || !(2 <= \old(waterLevel))) && (!(pumpRunning == 0) || !(\old(waterLevel) == 1)) - InvariantResult [Line: 255]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && splverifierCounter == 0) && waterLevel == 1) || ((pumpRunning == 0 && 2 <= waterLevel) && splverifierCounter == 0) - InvariantResult [Line: 847]: Loop Invariant Derived loop invariant: pumpRunning == 0 && waterLevel == 1 - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: ((!(pumpRunning == 0) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel))) && ((!(pumpRunning == 0) || !(\old(waterLevel) == 1)) || waterLevel == 1) - InvariantResult [Line: 766]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 373]: Loop Invariant Derived loop invariant: ((!(pumpRunning == 0) || !(\old(waterLevel) == 1)) || (1 <= tmp && waterLevel == 1)) && ((!(pumpRunning == 0) || (2 <= tmp && \old(waterLevel) == waterLevel)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 235]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && splverifierCounter == 0) && waterLevel == 1) || ((pumpRunning == 0 && 2 <= waterLevel) && splverifierCounter == 0) - InvariantResult [Line: 776]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 234]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 847]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 381]: Loop Invariant Derived loop invariant: ((!(pumpRunning == 0) || !(\old(waterLevel) == 1)) || (1 <= tmp && waterLevel == 1)) && ((!(pumpRunning == 0) || (2 <= tmp && \old(waterLevel) == waterLevel)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 225]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-16 20:11:27,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10bb9bb-2403-479c-977a-1cc685c5f01c/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE