./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9 --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 34b47c00ac265c7154b048b065075686f0b0d02157935b615817b802464c404c --- 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-6b4ec56 [2022-11-20 19:47:36,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:47:36,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:47:36,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:47:36,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:47:36,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:47:36,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:47:36,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:47:36,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:47:36,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:47:36,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:47:36,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:47:36,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:47:36,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:47:36,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:47:36,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:47:36,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:47:36,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:47:36,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:47:36,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:47:36,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:47:36,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:47:36,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:47:36,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:47:36,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:47:36,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:47:36,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:47:36,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:47:36,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:47:36,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:47:36,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:47:36,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:47:36,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:47:36,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:47:36,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:47:36,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:47:36,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:47:36,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:47:36,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:47:36,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:47:36,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:47:36,404 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 19:47:36,438 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:47:36,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:47:36,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:47:36,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:47:36,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:47:36,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:47:36,444 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:47:36,444 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:47:36,444 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:47:36,445 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:47:36,446 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:47:36,446 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:47:36,446 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:47:36,446 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:47:36,447 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:47:36,447 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:47:36,447 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:47:36,447 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:47:36,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:47:36,448 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:47:36,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:47:36,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:47:36,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:47:36,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:47:36,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:47:36,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:47:36,451 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:47:36,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:47:36,451 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:47:36,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:47:36,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:47:36,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:47:36,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:47:36,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:47:36,453 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:47:36,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:47:36,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:47:36,455 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:47:36,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:47:36,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:47:36,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:47:36,456 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_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34b47c00ac265c7154b048b065075686f0b0d02157935b615817b802464c404c [2022-11-20 19:47:36,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:47:36,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:47:36,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:47:36,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:47:36,775 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:47:36,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c [2022-11-20 19:47:39,834 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:47:40,095 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:47:40,095 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c [2022-11-20 19:47:40,107 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/data/b3e2f79f1/51f81519be734239b7fdf5704c2b5fb0/FLAG74ad769a3 [2022-11-20 19:47:40,122 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/data/b3e2f79f1/51f81519be734239b7fdf5704c2b5fb0 [2022-11-20 19:47:40,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:47:40,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:47:40,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:47:40,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:47:40,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:47:40,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:47:40" (1/1) ... [2022-11-20 19:47:40,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b968d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40, skipping insertion in model container [2022-11-20 19:47:40,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:47:40" (1/1) ... [2022-11-20 19:47:40,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:47:40,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:47:40,498 WARN L237 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_e92403a0-edde-49b1-944f-7a5ee5596269/sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c[19180,19193] [2022-11-20 19:47:40,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:47:40,541 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:47:40,642 WARN L237 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_e92403a0-edde-49b1-944f-7a5ee5596269/sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c[19180,19193] [2022-11-20 19:47:40,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:47:40,662 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:47:40,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40 WrapperNode [2022-11-20 19:47:40,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:47:40,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:47:40,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:47:40,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:47:40,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40" (1/1) ... [2022-11-20 19:47:40,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40" (1/1) ... [2022-11-20 19:47:40,726 INFO L138 Inliner]: procedures = 60, calls = 108, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 241 [2022-11-20 19:47:40,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:47:40,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:47:40,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:47:40,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:47:40,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40" (1/1) ... [2022-11-20 19:47:40,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40" (1/1) ... [2022-11-20 19:47:40,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40" (1/1) ... [2022-11-20 19:47:40,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40" (1/1) ... [2022-11-20 19:47:40,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40" (1/1) ... [2022-11-20 19:47:40,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40" (1/1) ... [2022-11-20 19:47:40,770 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40" (1/1) ... [2022-11-20 19:47:40,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40" (1/1) ... [2022-11-20 19:47:40,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:47:40,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:47:40,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:47:40,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:47:40,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40" (1/1) ... [2022-11-20 19:47:40,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:47:40,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:40,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:47:40,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:47:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:47:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-20 19:47:40,872 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-20 19:47:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 19:47:40,872 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 19:47:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 19:47:40,873 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 19:47:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 19:47:40,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 19:47:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-20 19:47:40,874 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-20 19:47:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-20 19:47:40,874 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-20 19:47:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2022-11-20 19:47:40,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2022-11-20 19:47:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-20 19:47:40,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-20 19:47:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-20 19:47:40,875 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-20 19:47:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 19:47:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-20 19:47:40,876 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-20 19:47:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:47:40,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:47:41,011 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:47:41,014 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:47:41,446 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:47:41,608 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:47:41,608 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 19:47:41,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:47:41 BoogieIcfgContainer [2022-11-20 19:47:41,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:47:41,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:47:41,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:47:41,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:47:41,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:47:40" (1/3) ... [2022-11-20 19:47:41,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5fe47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:47:41, skipping insertion in model container [2022-11-20 19:47:41,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:40" (2/3) ... [2022-11-20 19:47:41,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5fe47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:47:41, skipping insertion in model container [2022-11-20 19:47:41,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:47:41" (3/3) ... [2022-11-20 19:47:41,626 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product62.cil.c [2022-11-20 19:47:41,651 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:47:41,652 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:47:41,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:47:41,743 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;@4311e8df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:47:41,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:47:41,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-20 19:47:41,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 19:47:41,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:41,757 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:41,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:47:41,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:41,763 INFO L85 PathProgramCache]: Analyzing trace with hash 442962897, now seen corresponding path program 1 times [2022-11-20 19:47:41,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:41,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620259010] [2022-11-20 19:47:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:41,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 19:47:41,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:41,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620259010] [2022-11-20 19:47:41,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620259010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:41,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:41,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:47:41,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932423214] [2022-11-20 19:47:41,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:41,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 19:47:41,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:42,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 19:47:42,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 19:47:42,040 INFO L87 Difference]: Start difference. First operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 19:47:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:42,183 INFO L93 Difference]: Finished difference Result 148 states and 199 transitions. [2022-11-20 19:47:42,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 19:47:42,187 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-11-20 19:47:42,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:42,200 INFO L225 Difference]: With dead ends: 148 [2022-11-20 19:47:42,201 INFO L226 Difference]: Without dead ends: 70 [2022-11-20 19:47:42,205 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 [2022-11-20 19:47:42,229 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:42,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-20 19:47:42,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-20 19:47:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 51 states have internal predecessors, (55), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-20 19:47:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2022-11-20 19:47:42,284 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 21 [2022-11-20 19:47:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:42,285 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2022-11-20 19:47:42,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 19:47:42,285 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2022-11-20 19:47:42,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 19:47:42,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:42,288 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:42,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:47:42,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:47:42,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:42,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2021379213, now seen corresponding path program 1 times [2022-11-20 19:47:42,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:42,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747513124] [2022-11-20 19:47:42,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:42,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 19:47:42,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:42,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747513124] [2022-11-20 19:47:42,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747513124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:42,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:42,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:47:42,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076320586] [2022-11-20 19:47:42,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:42,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:47:42,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:42,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:47:42,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:42,420 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 19:47:42,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:42,476 INFO L93 Difference]: Finished difference Result 117 states and 151 transitions. [2022-11-20 19:47:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:47:42,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-20 19:47:42,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:42,478 INFO L225 Difference]: With dead ends: 117 [2022-11-20 19:47:42,479 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 19:47:42,480 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 [2022-11-20 19:47:42,481 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:42,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 119 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:47:42,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 19:47:42,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-20 19:47:42,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 46 states have internal predecessors, (49), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 19:47:42,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2022-11-20 19:47:42,493 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 22 [2022-11-20 19:47:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:42,493 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2022-11-20 19:47:42,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 19:47:42,494 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2022-11-20 19:47:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 19:47:42,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:42,495 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:42,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 19:47:42,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:47:42,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:42,497 INFO L85 PathProgramCache]: Analyzing trace with hash 495074929, now seen corresponding path program 1 times [2022-11-20 19:47:42,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:42,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450747204] [2022-11-20 19:47:42,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:42,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 19:47:42,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:42,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450747204] [2022-11-20 19:47:42,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450747204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:42,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:42,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:47:42,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574992461] [2022-11-20 19:47:42,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:42,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:47:42,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:42,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:47:42,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:47:42,796 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 19:47:43,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:43,016 INFO L93 Difference]: Finished difference Result 166 states and 218 transitions. [2022-11-20 19:47:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 19:47:43,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-11-20 19:47:43,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:43,019 INFO L225 Difference]: With dead ends: 166 [2022-11-20 19:47:43,019 INFO L226 Difference]: Without dead ends: 106 [2022-11-20 19:47:43,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 19:47:43,021 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 43 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:43,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 308 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:47:43,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-20 19:47:43,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2022-11-20 19:47:43,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 64 states have (on average 1.25) internal successors, (80), 72 states have internal predecessors, (80), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (26), 18 states have call predecessors, (26), 20 states have call successors, (26) [2022-11-20 19:47:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 126 transitions. [2022-11-20 19:47:43,040 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 126 transitions. Word has length 24 [2022-11-20 19:47:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:43,041 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 126 transitions. [2022-11-20 19:47:43,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 19:47:43,042 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 126 transitions. [2022-11-20 19:47:43,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 19:47:43,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:43,043 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:43,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 19:47:43,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:47:43,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:43,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1823229499, now seen corresponding path program 1 times [2022-11-20 19:47:43,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:43,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223317599] [2022-11-20 19:47:43,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:43,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 19:47:43,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:43,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223317599] [2022-11-20 19:47:43,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223317599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:43,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:43,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:47:43,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684572415] [2022-11-20 19:47:43,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:43,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:47:43,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:43,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:47:43,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:47:43,575 INFO L87 Difference]: Start difference. First operand 102 states and 126 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 19:47:43,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:43,773 INFO L93 Difference]: Finished difference Result 289 states and 357 transitions. [2022-11-20 19:47:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:47:43,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 41 [2022-11-20 19:47:43,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:43,776 INFO L225 Difference]: With dead ends: 289 [2022-11-20 19:47:43,776 INFO L226 Difference]: Without dead ends: 189 [2022-11-20 19:47:43,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:47:43,779 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 107 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:43,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 266 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:43,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-20 19:47:43,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2022-11-20 19:47:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 116 states have (on average 1.2241379310344827) internal successors, (142), 129 states have internal predecessors, (142), 36 states have call successors, (36), 31 states have call predecessors, (36), 32 states have return successors, (48), 33 states have call predecessors, (48), 36 states have call successors, (48) [2022-11-20 19:47:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 226 transitions. [2022-11-20 19:47:43,809 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 226 transitions. Word has length 41 [2022-11-20 19:47:43,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:43,810 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 226 transitions. [2022-11-20 19:47:43,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 19:47:43,811 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 226 transitions. [2022-11-20 19:47:43,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 19:47:43,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:43,813 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:43,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 19:47:43,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:47:43,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:43,814 INFO L85 PathProgramCache]: Analyzing trace with hash -203386622, now seen corresponding path program 1 times [2022-11-20 19:47:43,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:43,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582148525] [2022-11-20 19:47:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:43,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 19:47:44,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:44,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582148525] [2022-11-20 19:47:44,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582148525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:44,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:44,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 19:47:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915301123] [2022-11-20 19:47:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:44,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 19:47:44,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:44,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 19:47:44,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 19:47:44,193 INFO L87 Difference]: Start difference. First operand 185 states and 226 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 19:47:44,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:44,879 INFO L93 Difference]: Finished difference Result 435 states and 545 transitions. [2022-11-20 19:47:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 19:47:44,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 44 [2022-11-20 19:47:44,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:44,891 INFO L225 Difference]: With dead ends: 435 [2022-11-20 19:47:44,891 INFO L226 Difference]: Without dead ends: 305 [2022-11-20 19:47:44,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:47:44,900 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 245 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:44,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 254 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:47:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-20 19:47:44,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 275. [2022-11-20 19:47:44,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 177 states have (on average 1.231638418079096) internal successors, (218), 195 states have internal predecessors, (218), 51 states have call successors, (51), 39 states have call predecessors, (51), 46 states have return successors, (70), 52 states have call predecessors, (70), 51 states have call successors, (70) [2022-11-20 19:47:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 339 transitions. [2022-11-20 19:47:44,978 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 339 transitions. Word has length 44 [2022-11-20 19:47:44,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:44,978 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 339 transitions. [2022-11-20 19:47:44,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 19:47:44,979 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 339 transitions. [2022-11-20 19:47:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 19:47:44,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:44,990 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:44,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 19:47:44,991 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:47:44,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:44,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1805179232, now seen corresponding path program 1 times [2022-11-20 19:47:44,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:44,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016212228] [2022-11-20 19:47:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:44,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:45,175 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 19:47:45,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:45,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016212228] [2022-11-20 19:47:45,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016212228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:45,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:45,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 19:47:45,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118511952] [2022-11-20 19:47:45,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:45,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 19:47:45,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:45,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 19:47:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 19:47:45,181 INFO L87 Difference]: Start difference. First operand 275 states and 339 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 19:47:45,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:45,724 INFO L93 Difference]: Finished difference Result 561 states and 726 transitions. [2022-11-20 19:47:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 19:47:45,724 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2022-11-20 19:47:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:45,727 INFO L225 Difference]: With dead ends: 561 [2022-11-20 19:47:45,727 INFO L226 Difference]: Without dead ends: 412 [2022-11-20 19:47:45,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-20 19:47:45,730 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 124 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:45,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 433 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:47:45,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-20 19:47:45,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 379. [2022-11-20 19:47:45,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 244 states have (on average 1.2049180327868851) internal successors, (294), 272 states have internal predecessors, (294), 70 states have call successors, (70), 54 states have call predecessors, (70), 64 states have return successors, (103), 70 states have call predecessors, (103), 70 states have call successors, (103) [2022-11-20 19:47:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 467 transitions. [2022-11-20 19:47:45,778 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 467 transitions. Word has length 61 [2022-11-20 19:47:45,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:45,778 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 467 transitions. [2022-11-20 19:47:45,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 19:47:45,779 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 467 transitions. [2022-11-20 19:47:45,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 19:47:45,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:45,781 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:45,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 19:47:45,782 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:47:45,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:45,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1711071724, now seen corresponding path program 1 times [2022-11-20 19:47:45,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:45,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239318242] [2022-11-20 19:47:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:45,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:46,064 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 19:47:46,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:46,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239318242] [2022-11-20 19:47:46,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239318242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:47:46,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511778694] [2022-11-20 19:47:46,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:46,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:46,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:46,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:46,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 19:47:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:46,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 19:47:46,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:46,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:47:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 19:47:46,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511778694] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:47:46,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1999681364] [2022-11-20 19:47:46,877 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2022-11-20 19:47:46,877 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:47:46,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:47:46,888 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:47:46,888 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:47:52,612 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 53 for LOIs [2022-11-20 19:47:52,624 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 31 for LOIs [2022-11-20 19:47:53,036 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 44 for LOIs [2022-11-20 19:47:53,043 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 26 for LOIs [2022-11-20 19:47:53,097 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2022-11-20 19:47:53,205 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 28 for LOIs [2022-11-20 19:47:53,208 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:48:00,546 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4943#(and (= |timeShift_getWaterLevel_~retValue_acc~8#1| ~waterLevel~0) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~6#1| 2)) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= |old(~waterLevel~0)| ~waterLevel~0) (<= 2 |timeShift_getWaterLevel_#res#1|) (= ~head~0.base 0) (= |#NULL.offset| 0) (= ~switchedOnBeforeTS~0 0) (<= |timeShift_getWaterLevel_~retValue_acc~8#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~6#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= |old(~switchedOnBeforeTS~0)| 0))' at error location [2022-11-20 19:48:00,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:48:00,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:48:00,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-11-20 19:48:00,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363198163] [2022-11-20 19:48:00,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 19:48:00,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 19:48:00,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:48:00,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 19:48:00,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 19:48:00,549 INFO L87 Difference]: Start difference. First operand 379 states and 467 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 19:48:01,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:48:01,214 INFO L93 Difference]: Finished difference Result 1310 states and 1701 transitions. [2022-11-20 19:48:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 19:48:01,222 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 78 [2022-11-20 19:48:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:48:01,228 INFO L225 Difference]: With dead ends: 1310 [2022-11-20 19:48:01,228 INFO L226 Difference]: Without dead ends: 921 [2022-11-20 19:48:01,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 188 SyntacticMatches, 15 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=221, Invalid=1759, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 19:48:01,232 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 203 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:48:01,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 495 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:48:01,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-11-20 19:48:01,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 778. [2022-11-20 19:48:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 504 states have (on average 1.1984126984126984) internal successors, (604), 562 states have internal predecessors, (604), 140 states have call successors, (140), 118 states have call predecessors, (140), 133 states have return successors, (248), 138 states have call predecessors, (248), 140 states have call successors, (248) [2022-11-20 19:48:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 992 transitions. [2022-11-20 19:48:01,339 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 992 transitions. Word has length 78 [2022-11-20 19:48:01,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:48:01,341 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 992 transitions. [2022-11-20 19:48:01,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 19:48:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 992 transitions. [2022-11-20 19:48:01,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-20 19:48:01,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:48:01,348 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:48:01,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 19:48:01,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:48:01,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:48:01,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:48:01,555 INFO L85 PathProgramCache]: Analyzing trace with hash 681535356, now seen corresponding path program 1 times [2022-11-20 19:48:01,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:48:01,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871259953] [2022-11-20 19:48:01,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:48:01,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:48:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:48:02,430 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 44 proven. 14 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 19:48:02,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:48:02,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871259953] [2022-11-20 19:48:02,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871259953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:48:02,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873622539] [2022-11-20 19:48:02,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:48:02,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:48:02,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:48:02,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:48:02,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 19:48:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:48:02,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 19:48:02,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:48:02,949 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 66 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 19:48:02,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:48:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 19:48:03,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873622539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:48:03,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1348521199] [2022-11-20 19:48:03,847 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2022-11-20 19:48:03,847 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:48:03,848 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:48:03,848 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:48:03,848 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:48:09,236 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 55 for LOIs [2022-11-20 19:48:09,258 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 30 for LOIs [2022-11-20 19:48:09,636 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 41 for LOIs [2022-11-20 19:48:09,641 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 26 for LOIs [2022-11-20 19:48:09,688 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2022-11-20 19:48:09,804 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 58 for LOIs [2022-11-20 19:48:09,818 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:48:17,841 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8880#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (= |timeShift_getWaterLevel_~retValue_acc~8#1| ~waterLevel~0) (<= 0 |old(~pumpRunning~0)|) (= ~head~0.offset 0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~6#1| 2)) (= 1 ~systemActive~0) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 1) (<= |old(~pumpRunning~0)| 0) (<= 2 |old(~waterLevel~0)|) (<= ~methaneLevelCritical~0 0) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (<= 0 ~head~0.base) (<= 0 ~methaneLevelCritical~0) (<= 2 |timeShift_getWaterLevel_#res#1|) (<= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= ~switchedOnBeforeTS~0 0) (<= |timeShift_getWaterLevel_~retValue_acc~8#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~6#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| |timeShift_getWaterLevel_#res#1|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-20 19:48:17,841 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:48:17,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:48:17,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 11] total 26 [2022-11-20 19:48:17,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185784771] [2022-11-20 19:48:17,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 19:48:17,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 19:48:17,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:48:17,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 19:48:17,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=3273, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 19:48:17,845 INFO L87 Difference]: Start difference. First operand 778 states and 992 transitions. Second operand has 26 states, 25 states have (on average 5.32) internal successors, (133), 26 states have internal predecessors, (133), 14 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 14 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-20 19:48:21,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:48:21,373 INFO L93 Difference]: Finished difference Result 1684 states and 2168 transitions. [2022-11-20 19:48:21,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-20 19:48:21,373 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.32) internal successors, (133), 26 states have internal predecessors, (133), 14 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 14 states have call predecessors, (32), 13 states have call successors, (32) Word has length 110 [2022-11-20 19:48:21,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:48:21,374 INFO L225 Difference]: With dead ends: 1684 [2022-11-20 19:48:21,375 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 19:48:21,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 307 SyntacticMatches, 9 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5280 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=1410, Invalid=11930, Unknown=0, NotChecked=0, Total=13340 [2022-11-20 19:48:21,384 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 1104 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1916 mSolverCounterSat, 963 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 963 IncrementalHoareTripleChecker+Valid, 1916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 19:48:21,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 610 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 1916 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 19:48:21,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 19:48:21,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 19:48:21,385 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) [2022-11-20 19:48:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 19:48:21,386 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 110 [2022-11-20 19:48:21,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:48:21,386 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 19:48:21,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.32) internal successors, (133), 26 states have internal predecessors, (133), 14 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 14 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-20 19:48:21,386 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 19:48:21,387 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 19:48:21,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 19:48:21,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 19:48:21,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:48:21,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 19:48:28,898 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 203 210) the Hoare annotation is: (or (not (<= ~waterLevel~0 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (= ~switchedOnBeforeTS~0 0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2022-11-20 19:48:28,898 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 203 210) no Hoare annotation was computed. [2022-11-20 19:48:28,898 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 93 99) no Hoare annotation was computed. [2022-11-20 19:48:28,898 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 93 99) the Hoare annotation is: true [2022-11-20 19:48:28,898 INFO L895 garLoopResultBuilder]: At program point L141(line 141) the Hoare annotation is: (let ((.cse0 (not (<= ~waterLevel~0 2))) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1) (or .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse1))) [2022-11-20 19:48:28,898 INFO L895 garLoopResultBuilder]: At program point L137(line 137) the Hoare annotation is: (or (not (<= ~waterLevel~0 2)) (and (not (= ~switchedOnBeforeTS~0 0)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2022-11-20 19:48:28,899 INFO L899 garLoopResultBuilder]: For program point L135(lines 135 143) no Hoare annotation was computed. [2022-11-20 19:48:28,899 INFO L895 garLoopResultBuilder]: At program point L131(lines 131 148) the Hoare annotation is: (or (not (<= ~waterLevel~0 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2022-11-20 19:48:28,899 INFO L895 garLoopResultBuilder]: At program point L146(line 146) the Hoare annotation is: (let ((.cse0 (not (<= ~waterLevel~0 2))) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or .cse0 (= ~switchedOnBeforeTS~0 0) .cse1) (or .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse1))) [2022-11-20 19:48:28,899 INFO L899 garLoopResultBuilder]: For program point L146-1(lines 127 151) no Hoare annotation was computed. [2022-11-20 19:48:28,899 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 127 151) the Hoare annotation is: (or (not (<= ~waterLevel~0 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2022-11-20 19:48:28,900 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 127 151) no Hoare annotation was computed. [2022-11-20 19:48:28,900 INFO L899 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 222 230) no Hoare annotation was computed. [2022-11-20 19:48:28,900 INFO L902 garLoopResultBuilder]: At program point isPumpRunningENTRY(lines 222 230) the Hoare annotation is: true [2022-11-20 19:48:28,900 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 827 838) the Hoare annotation is: true [2022-11-20 19:48:28,900 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 827 838) no Hoare annotation was computed. [2022-11-20 19:48:28,900 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 905 934) no Hoare annotation was computed. [2022-11-20 19:48:28,900 INFO L899 garLoopResultBuilder]: For program point L926(line 926) no Hoare annotation was computed. [2022-11-20 19:48:28,901 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 905 934) the Hoare annotation is: true [2022-11-20 19:48:28,901 INFO L899 garLoopResultBuilder]: For program point L919(lines 919 923) no Hoare annotation was computed. [2022-11-20 19:48:28,901 INFO L902 garLoopResultBuilder]: At program point L919-1(lines 919 923) the Hoare annotation is: true [2022-11-20 19:48:28,901 INFO L902 garLoopResultBuilder]: At program point L915-2(lines 915 929) the Hoare annotation is: true [2022-11-20 19:48:28,901 INFO L902 garLoopResultBuilder]: At program point L911(line 911) the Hoare annotation is: true [2022-11-20 19:48:28,902 INFO L899 garLoopResultBuilder]: For program point L911-1(line 911) no Hoare annotation was computed. [2022-11-20 19:48:28,902 INFO L902 garLoopResultBuilder]: At program point L930(lines 905 934) the Hoare annotation is: true [2022-11-20 19:48:28,902 INFO L895 garLoopResultBuilder]: At program point L159(line 159) the Hoare annotation is: (let ((.cse1 (and (not (= ~pumpRunning~0 0)) (let ((.cse2 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse2) (= |old(~waterLevel~0)| ~waterLevel~0)) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse2))) (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (.cse0 (not (<= |old(~waterLevel~0)| 2)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0) (or .cse1 .cse0 (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse1 .cse0))) [2022-11-20 19:48:28,902 INFO L899 garLoopResultBuilder]: For program point L159-1(line 159) no Hoare annotation was computed. [2022-11-20 19:48:28,902 INFO L895 garLoopResultBuilder]: At program point L345(line 345) the Hoare annotation is: (let ((.cse6 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse8 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse5 (= ~pumpRunning~0 0)) (.cse11 (let ((.cse12 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse12) .cse6) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse12)))) (.cse7 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~6#1| ~waterLevel~0)) (.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not (<= |old(~waterLevel~0)| 1))) (.cse4 (not .cse3)) (.cse1 (and (not (= ~switchedOnBeforeTS~0 0)) .cse5 .cse11 .cse7)) (.cse2 (and (not .cse5) .cse11 .cse7 .cse8)) (.cse9 (not (<= |old(~waterLevel~0)| 2))) (.cse10 (not (<= 2 |old(~waterLevel~0)|)))) (and (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse4 (and .cse5 .cse6 .cse7 .cse8)) (or .cse4 .cse9 .cse10) (or .cse1 .cse2 .cse9 .cse10))))) [2022-11-20 19:48:28,903 INFO L899 garLoopResultBuilder]: For program point L345-1(line 345) no Hoare annotation was computed. [2022-11-20 19:48:28,903 INFO L895 garLoopResultBuilder]: At program point L172(line 172) the Hoare annotation is: (let ((.cse0 (not (<= |old(~waterLevel~0)| 2))) (.cse1 (and (= ~pumpRunning~0 0) (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))) (and (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0 (= |old(~switchedOnBeforeTS~0)| 0)) (or .cse1 .cse0 (not (<= 2 |old(~waterLevel~0)|))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) .cse1))) [2022-11-20 19:48:28,903 INFO L895 garLoopResultBuilder]: At program point L172-1(lines 153 177) the Hoare annotation is: (let ((.cse9 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse10 (<= ~waterLevel~0 2)) (.cse5 (let ((.cse11 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse11) .cse9) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse11)))) (.cse8 (= ~pumpRunning~0 0))) (let ((.cse1 (not (<= |old(~waterLevel~0)| 2))) (.cse4 (not .cse8)) (.cse7 (and (not (= ~switchedOnBeforeTS~0 0)) .cse8 .cse10 .cse5)) (.cse2 (and (<= 2 ~waterLevel~0) .cse10 .cse9)) (.cse3 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse6 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (and .cse4 .cse5 .cse6) .cse1 .cse7 (= |old(~switchedOnBeforeTS~0)| 0)) (or .cse1 (and .cse4 (<= ~waterLevel~0 1) (<= 1 ~waterLevel~0) .cse6) .cse7 .cse2 .cse3) (or (not (<= |old(~waterLevel~0)| 1)) .cse0 (and .cse8 .cse9 .cse6)))))) [2022-11-20 19:48:28,903 INFO L899 garLoopResultBuilder]: For program point L73-2(lines 69 91) no Hoare annotation was computed. [2022-11-20 19:48:28,904 INFO L895 garLoopResultBuilder]: At program point L330(line 330) the Hoare annotation is: (let ((.cse3 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (not (= ~switchedOnBeforeTS~0 0))) (.cse1 (not (<= |old(~waterLevel~0)| 2))) (.cse5 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse2 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse6 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 .cse1 (not (<= 2 |old(~waterLevel~0)|))) (or .cse2 .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (or .cse3 (= ~pumpRunning~0 0) .cse1) (or .cse4 .cse3 .cse1 .cse5) (or .cse6 .cse3 .cse0) (or .cse4 .cse2 .cse1 .cse5) (or .cse2 .cse6 .cse0))) [2022-11-20 19:48:28,904 INFO L895 garLoopResultBuilder]: At program point L330-1(line 330) the Hoare annotation is: (let ((.cse3 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse0 (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__2_#t~ret19#1|)) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (not (<= |old(~waterLevel~0)| 2)))) (and (or (and .cse0 .cse1) .cse2 (not (<= 2 |old(~waterLevel~0)|))) (or .cse3 .cse1 .cse2) (or .cse3 (and (not (= ~switchedOnBeforeTS~0 0)) .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse2 (= |old(~switchedOnBeforeTS~0)| 0)) (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) .cse0 .cse1) .cse2))) [2022-11-20 19:48:28,904 INFO L899 garLoopResultBuilder]: For program point L161(lines 161 169) no Hoare annotation was computed. [2022-11-20 19:48:28,904 INFO L899 garLoopResultBuilder]: For program point L157(lines 157 174) no Hoare annotation was computed. [2022-11-20 19:48:28,904 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 357) no Hoare annotation was computed. [2022-11-20 19:48:28,904 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 360) no Hoare annotation was computed. [2022-11-20 19:48:28,905 INFO L895 garLoopResultBuilder]: At program point L343-1(lines 335 363) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 0)) (.cse5 (not (= ~switchedOnBeforeTS~0 0))) (.cse3 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~6#1| ~waterLevel~0)) (.cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse1 (not (<= |old(~waterLevel~0)| 2))) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (and (<= 2 ~waterLevel~0) .cse0) .cse1 (and .cse2 .cse0 .cse3 .cse4)) (let ((.cse6 (or .cse0 (= ~waterLevel~0 1)))) (or (and .cse0 .cse3) (and .cse5 .cse2 .cse6 .cse3) .cse1 (and (not .cse2) .cse6 .cse3 .cse4) (not (<= 2 |old(~waterLevel~0)|)))) (let ((.cse7 (let ((.cse8 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse8) .cse0) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse8))))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (and .cse5 .cse2 .cse7 .cse3) (and .cse5 .cse7 .cse3 .cse4) .cse1 (= |old(~switchedOnBeforeTS~0)| 0))))) [2022-11-20 19:48:28,905 INFO L895 garLoopResultBuilder]: At program point L1008(line 1008) the Hoare annotation is: (let ((.cse0 (not (<= |old(~waterLevel~0)| 1)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 0))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0) (or (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-20 19:48:28,905 INFO L899 garLoopResultBuilder]: For program point L348(lines 348 354) no Hoare annotation was computed. [2022-11-20 19:48:28,905 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 66 92) the Hoare annotation is: (let ((.cse3 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (not (= ~switchedOnBeforeTS~0 0))) (.cse1 (not (<= |old(~waterLevel~0)| 2))) (.cse5 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse2 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse6 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 .cse1 (not (<= 2 |old(~waterLevel~0)|))) (or .cse2 .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (or .cse3 (= ~pumpRunning~0 0) .cse1) (or .cse4 .cse3 .cse1 .cse5) (or .cse6 .cse3 .cse0) (or .cse4 .cse2 .cse1 .cse5) (or .cse2 .cse6 .cse0))) [2022-11-20 19:48:28,905 INFO L895 garLoopResultBuilder]: At program point L80-1(lines 80 86) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0))) (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse6 (not .cse1)) (.cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse5 (not (= ~switchedOnBeforeTS~0 0))) (.cse4 (not (<= |old(~waterLevel~0)| 2))) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (not (<= |old(~waterLevel~0)| 1)) .cse0 (and .cse1 .cse2)) (or .cse0 .cse3 .cse4) (or (and .cse5 .cse1 (= ~waterLevel~0 1)) .cse3 .cse4 (and .cse6 (<= ~waterLevel~0 1) (<= 1 ~waterLevel~0) .cse2) (not (<= 2 |old(~waterLevel~0)|))) (let ((.cse7 (let ((.cse8 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse8) .cse3) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse8))))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (and .cse6 .cse7 .cse2) (and .cse5 .cse1 .cse7) .cse4 (= |old(~switchedOnBeforeTS~0)| 0)))))) [2022-11-20 19:48:28,905 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 66 92) no Hoare annotation was computed. [2022-11-20 19:48:28,906 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1008) no Hoare annotation was computed. [2022-11-20 19:48:28,906 INFO L895 garLoopResultBuilder]: At program point L167(line 167) the Hoare annotation is: (let ((.cse1 (and (not (= ~pumpRunning~0 0)) (let ((.cse2 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse2) (= |old(~waterLevel~0)| ~waterLevel~0)) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse2))) (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (.cse0 (not (<= |old(~waterLevel~0)| 2)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0) (or .cse1 .cse0 (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse1 .cse0))) [2022-11-20 19:48:28,906 INFO L895 garLoopResultBuilder]: At program point L163(line 163) the Hoare annotation is: (let ((.cse0 (not (<= |old(~waterLevel~0)| 2))) (.cse1 (not (= ~switchedOnBeforeTS~0 0))) (.cse2 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse3 (< 0 |old(~waterLevel~0)|)) (.cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0) (or .cse0 (and .cse1 .cse2 .cse3 .cse4) (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (not (<= |old(~waterLevel~0)| 1)) (and .cse1 (<= ~waterLevel~0 0) (or (and .cse2 .cse3) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse4)))) [2022-11-20 19:48:28,906 INFO L895 garLoopResultBuilder]: At program point L990(lines 990 997) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= |ULTIMATE.start_main_~tmp~11#1| 1) (= ~waterLevel~0 1) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) [2022-11-20 19:48:28,907 INFO L895 garLoopResultBuilder]: At program point L416-2(lines 408 421) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~11#1| 1)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (<= ~waterLevel~0 2))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2) (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2) (and .cse0 .cse1 .cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))) [2022-11-20 19:48:28,907 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-20 19:48:28,907 INFO L902 garLoopResultBuilder]: At program point L990-2(lines 990 997) the Hoare annotation is: true [2022-11-20 19:48:28,907 INFO L899 garLoopResultBuilder]: For program point L379(lines 378 425) no Hoare annotation was computed. [2022-11-20 19:48:28,907 INFO L895 garLoopResultBuilder]: At program point L400(line 400) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~11#1| 1)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (<= ~waterLevel~0 2))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2) (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2) (and .cse0 .cse1 .cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))) [2022-11-20 19:48:28,907 INFO L902 garLoopResultBuilder]: At program point L429(lines 368 433) the Hoare annotation is: true [2022-11-20 19:48:28,908 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 394) no Hoare annotation was computed. [2022-11-20 19:48:28,908 INFO L899 garLoopResultBuilder]: For program point L388-1(lines 388 394) no Hoare annotation was computed. [2022-11-20 19:48:28,908 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 19:48:28,908 INFO L895 garLoopResultBuilder]: At program point L426(lines 377 427) the Hoare annotation is: false [2022-11-20 19:48:28,908 INFO L899 garLoopResultBuilder]: For program point L398(lines 398 404) no Hoare annotation was computed. [2022-11-20 19:48:28,908 INFO L895 garLoopResultBuilder]: At program point L398-1(lines 398 404) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~11#1| 1)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (<= ~waterLevel~0 2))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2) (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2) (and .cse0 .cse1 .cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))) [2022-11-20 19:48:28,909 INFO L895 garLoopResultBuilder]: At program point L423(lines 378 425) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~11#1| 1)) (.cse1 (<= ~waterLevel~0 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and .cse0 (<= 2 ~waterLevel~0) .cse2 (<= ~waterLevel~0 2)) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2))) [2022-11-20 19:48:28,909 INFO L895 garLoopResultBuilder]: At program point L390(line 390) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~11#1| 1)) (.cse2 (<= ~waterLevel~0 1)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (or (and (<= 2 ~waterLevel~0) .cse1 (<= ~waterLevel~0 2)) (and .cse2 .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))) (and (= ~pumpRunning~0 0) .cse0 .cse2 .cse1))) [2022-11-20 19:48:28,909 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 101 125) the Hoare annotation is: (or (not (<= ~waterLevel~0 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2022-11-20 19:48:28,909 INFO L895 garLoopResultBuilder]: At program point L120(line 120) the Hoare annotation is: (let ((.cse0 (not (<= ~waterLevel~0 2))) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1) (or .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse1))) [2022-11-20 19:48:28,909 INFO L899 garLoopResultBuilder]: For program point L120-1(lines 101 125) no Hoare annotation was computed. [2022-11-20 19:48:28,910 INFO L895 garLoopResultBuilder]: At program point L191(line 191) the Hoare annotation is: (or (and (= ~pumpRunning~0 0) (<= 2 ~waterLevel~0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (not (<= ~waterLevel~0 2)) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2022-11-20 19:48:28,910 INFO L895 garLoopResultBuilder]: At program point L191-1(line 191) the Hoare annotation is: (or (and (= ~pumpRunning~0 0) (<= 2 ~waterLevel~0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (not (<= ~waterLevel~0 2)) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2022-11-20 19:48:28,910 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 101 125) no Hoare annotation was computed. [2022-11-20 19:48:28,910 INFO L895 garLoopResultBuilder]: At program point L115(line 115) the Hoare annotation is: (let ((.cse0 (not (<= ~waterLevel~0 2))) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or (and (or (<= 2 ~waterLevel~0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 0)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse0 .cse1) (or .cse0 (= ~switchedOnBeforeTS~0 0) .cse1))) [2022-11-20 19:48:28,910 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 117) no Hoare annotation was computed. [2022-11-20 19:48:28,911 INFO L895 garLoopResultBuilder]: At program point L105(lines 105 122) the Hoare annotation is: (or (not (<= ~waterLevel~0 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2022-11-20 19:48:28,911 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 815 826) no Hoare annotation was computed. [2022-11-20 19:48:28,911 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 815 826) the Hoare annotation is: (let ((.cse0 (not (<= |old(~waterLevel~0)| 1))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 (not (= ~pumpRunning~0 0)) .cse1) (or .cse1 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse1))) [2022-11-20 19:48:28,911 INFO L902 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 211 221) the Hoare annotation is: true [2022-11-20 19:48:28,911 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 211 221) no Hoare annotation was computed. [2022-11-20 19:48:28,915 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:48:28,917 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 19:48:28,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:48:28 BoogieIcfgContainer [2022-11-20 19:48:28,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 19:48:28,942 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 19:48:28,943 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 19:48:28,943 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 19:48:28,944 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:47:41" (3/4) ... [2022-11-20 19:48:28,947 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 19:48:28,953 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-20 19:48:28,953 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-20 19:48:28,953 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-20 19:48:28,954 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-20 19:48:28,954 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-20 19:48:28,954 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 19:48:28,954 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-20 19:48:28,954 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2022-11-20 19:48:28,955 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2022-11-20 19:48:28,955 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2022-11-20 19:48:28,961 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 56 nodes and edges [2022-11-20 19:48:28,962 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-20 19:48:28,963 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 19:48:28,963 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 19:48:28,964 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 19:48:28,990 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((pumpRunning == aux-isPumpRunning()-aux && \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || ((!(switchedOnBeforeTS == 0) && pumpRunning == aux-isPumpRunning()-aux) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0)) && ((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) [2022-11-20 19:48:28,991 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && pumpRunning == switchedOnBeforeTS)) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2))) && ((((((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && waterLevel == 1) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || (((!(pumpRunning == 0) && waterLevel <= 1) && 1 <= waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel)))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || ((!(pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS)) || ((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0) [2022-11-20 19:48:28,991 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || (2 <= waterLevel && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || (((pumpRunning == 0 && \old(waterLevel) == waterLevel) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) && (((((\old(waterLevel) == waterLevel && tmp == waterLevel) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || (((!(pumpRunning == 0) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel)))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && tmp == waterLevel)) || (((!(switchedOnBeforeTS == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0) [2022-11-20 19:48:28,992 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) && (!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1))) && (!(\old(waterLevel) <= 2) || !(2 <= \old(waterLevel))) [2022-11-20 19:48:28,992 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) <= 2)) || ((2 <= waterLevel && waterLevel <= 2) && \old(waterLevel) == waterLevel)) || !(2 <= \old(waterLevel))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || ((!(pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && waterLevel <= 2) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || \old(switchedOnBeforeTS) == 0)) && ((((!(\old(waterLevel) <= 2) || (((!(pumpRunning == 0) && waterLevel <= 1) && 1 <= waterLevel) && pumpRunning == switchedOnBeforeTS)) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && waterLevel <= 2) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || ((2 <= waterLevel && waterLevel <= 2) && \old(waterLevel) == waterLevel)) || !(2 <= \old(waterLevel)))) && ((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS)) [2022-11-20 19:48:28,992 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(waterLevel <= 2) || pumpRunning == switchedOnBeforeTS) || !(switchedOnBeforeTS == \old(pumpRunning)) [2022-11-20 19:48:28,993 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(waterLevel <= 2) || pumpRunning == switchedOnBeforeTS) || !(switchedOnBeforeTS == \old(pumpRunning)) [2022-11-20 19:48:28,994 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((pumpRunning == 0 && 2 <= waterLevel) && pumpRunning == switchedOnBeforeTS) || !(waterLevel <= 2)) || !(switchedOnBeforeTS == \old(pumpRunning)) [2022-11-20 19:48:29,022 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 19:48:29,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 19:48:29,023 INFO L158 Benchmark]: Toolchain (without parser) took 48897.51ms. Allocated memory was 136.3MB in the beginning and 566.2MB in the end (delta: 429.9MB). Free memory was 93.8MB in the beginning and 327.0MB in the end (delta: -233.2MB). Peak memory consumption was 195.1MB. Max. memory is 16.1GB. [2022-11-20 19:48:29,024 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 109.1MB. Free memory was 77.6MB in the beginning and 77.5MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:48:29,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 535.88ms. Allocated memory is still 136.3MB. Free memory was 93.8MB in the beginning and 94.5MB in the end (delta: -681.6kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 19:48:29,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.84ms. Allocated memory is still 136.3MB. Free memory was 94.5MB in the beginning and 92.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:48:29,025 INFO L158 Benchmark]: Boogie Preprocessor took 46.30ms. Allocated memory is still 136.3MB. Free memory was 92.0MB in the beginning and 90.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:48:29,025 INFO L158 Benchmark]: RCFGBuilder took 836.80ms. Allocated memory is still 136.3MB. Free memory was 90.4MB in the beginning and 61.5MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-20 19:48:29,025 INFO L158 Benchmark]: TraceAbstraction took 47326.72ms. Allocated memory was 136.3MB in the beginning and 566.2MB in the end (delta: 429.9MB). Free memory was 61.1MB in the beginning and 333.3MB in the end (delta: -272.2MB). Peak memory consumption was 302.7MB. Max. memory is 16.1GB. [2022-11-20 19:48:29,026 INFO L158 Benchmark]: Witness Printer took 80.20ms. Allocated memory is still 566.2MB. Free memory was 333.3MB in the beginning and 327.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 19:48:29,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 109.1MB. Free memory was 77.6MB in the beginning and 77.5MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 535.88ms. Allocated memory is still 136.3MB. Free memory was 93.8MB in the beginning and 94.5MB in the end (delta: -681.6kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.84ms. Allocated memory is still 136.3MB. Free memory was 94.5MB in the beginning and 92.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.30ms. Allocated memory is still 136.3MB. Free memory was 92.0MB in the beginning and 90.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 836.80ms. Allocated memory is still 136.3MB. Free memory was 90.4MB in the beginning and 61.5MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 47326.72ms. Allocated memory was 136.3MB in the beginning and 566.2MB in the end (delta: 429.9MB). Free memory was 61.1MB in the beginning and 333.3MB in the end (delta: -272.2MB). Peak memory consumption was 302.7MB. Max. memory is 16.1GB. * Witness Printer took 80.20ms. Allocated memory is still 566.2MB. Free memory was 333.3MB in the beginning and 327.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. 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: 1008]: 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 11 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.2s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1852 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1833 mSDsluCounter, 2563 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1855 mSDsCounter, 1226 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3492 IncrementalHoareTripleChecker+Invalid, 4718 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1226 mSolverCounterUnsat, 708 mSDtfsCounter, 3492 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 740 GetRequests, 516 SyntacticMatches, 24 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6141 ImplicationChecksByTransitivity, 17.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=778occurred in iteration=7, InterpolantAutomatonStates: 121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 214 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 1686 PreInvPairs, 2105 NumberOfFragments, 1681 HoareAnnotationTreeSize, 1686 FomulaSimplifications, 4325 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 44 FomulaSimplificationsInter, 34986 FormulaSimplificationTreeSizeReductionInter, 6.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 589 NumberOfCodeBlocks, 589 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 765 ConstructedInterpolants, 0 QuantifiedInterpolants, 2470 SizeOfPredicates, 29 NumberOfNonLiveVariables, 820 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 367/404 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: 330]: Loop Invariant Derived loop invariant: (((((pumpRunning == aux-isPumpRunning()-aux && \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || ((!(switchedOnBeforeTS == 0) && pumpRunning == aux-isPumpRunning()-aux) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0)) && ((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) - InvariantResult [Line: 378]: Loop Invariant Derived loop invariant: ((((tmp == 1 && waterLevel <= 1) && splverifierCounter == 0) && pumpRunning == switchedOnBeforeTS) || (((tmp == 1 && 2 <= waterLevel) && splverifierCounter == 0) && waterLevel <= 2)) || (((pumpRunning == 0 && tmp == 1) && waterLevel <= 1) && splverifierCounter == 0) - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: (!(waterLevel <= 2) || pumpRunning == switchedOnBeforeTS) || !(switchedOnBeforeTS == \old(pumpRunning)) - InvariantResult [Line: 990]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1008]: Loop Invariant Derived loop invariant: ((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) && (!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1))) && (!(\old(waterLevel) <= 2) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 915]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 905]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && pumpRunning == switchedOnBeforeTS)) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2))) && ((((((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && waterLevel == 1) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || (((!(pumpRunning == 0) && waterLevel <= 1) && 1 <= waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel)))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || ((!(pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS)) || ((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0) - InvariantResult [Line: 211]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 990]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && tmp == 1) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS - InvariantResult [Line: 191]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && 2 <= waterLevel) && pumpRunning == switchedOnBeforeTS) || !(waterLevel <= 2)) || !(switchedOnBeforeTS == \old(pumpRunning)) - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: (!(waterLevel <= 2) || pumpRunning == switchedOnBeforeTS) || !(switchedOnBeforeTS == \old(pumpRunning)) - InvariantResult [Line: 377]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 368]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 335]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || (2 <= waterLevel && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || (((pumpRunning == 0 && \old(waterLevel) == waterLevel) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) && (((((\old(waterLevel) == waterLevel && tmp == waterLevel) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || (((!(pumpRunning == 0) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel)))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && tmp == waterLevel)) || (((!(switchedOnBeforeTS == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0) - InvariantResult [Line: 398]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && tmp == 1) && splverifierCounter == 0) && waterLevel <= 2) || (((tmp == 1 && 2 <= waterLevel) && splverifierCounter == 0) && waterLevel <= 2)) || (((tmp == 1 && splverifierCounter == 0) && waterLevel <= 2) && pumpRunning == switchedOnBeforeTS) - InvariantResult [Line: 153]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) <= 2)) || ((2 <= waterLevel && waterLevel <= 2) && \old(waterLevel) == waterLevel)) || !(2 <= \old(waterLevel))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || ((!(pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && waterLevel <= 2) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || \old(switchedOnBeforeTS) == 0)) && ((((!(\old(waterLevel) <= 2) || (((!(pumpRunning == 0) && waterLevel <= 1) && 1 <= waterLevel) && pumpRunning == switchedOnBeforeTS)) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && waterLevel <= 2) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || ((2 <= waterLevel && waterLevel <= 2) && \old(waterLevel) == waterLevel)) || !(2 <= \old(waterLevel)))) && ((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS)) RESULT: Ultimate proved your program to be correct! [2022-11-20 19:48:29,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92403a0-edde-49b1-944f-7a5ee5596269/bin/utaipan-6cKwYrpEi9/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