./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS --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 e91d5c860cfea17112af53939b2fffb1e4c536355098377ab18c754994d1bc2b --- 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-8393723 [2022-11-19 08:06:25,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:06:25,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:06:25,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:06:25,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:06:25,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:06:25,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:06:25,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:06:25,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:06:25,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:06:25,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:06:25,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:06:25,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:06:25,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:06:25,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:06:25,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:06:25,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:06:25,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:06:25,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:06:25,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:06:25,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:06:25,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:06:25,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:06:25,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:06:25,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:06:25,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:06:25,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:06:25,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:06:25,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:06:25,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:06:25,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:06:25,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:06:25,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:06:25,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:06:25,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:06:25,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:06:25,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:06:25,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:06:25,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:06:25,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:06:25,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:06:25,590 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:06:25,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:06:25,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:06:25,633 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:06:25,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:06:25,634 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:06:25,634 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:06:25,635 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:06:25,635 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:06:25,635 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:06:25,635 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:06:25,636 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:06:25,637 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:06:25,637 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:06:25,637 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:06:25,637 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:06:25,637 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:06:25,638 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:06:25,638 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:06:25,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:06:25,639 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:06:25,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:06:25,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:06:25,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:06:25,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:06:25,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:06:25,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:06:25,642 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:06:25,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:06:25,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:06:25,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:06:25,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:06:25,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:06:25,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:06:25,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:06:25,644 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:06:25,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:06:25,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:06:25,644 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:06:25,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:06:25,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:06:25,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:06:25,645 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_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e91d5c860cfea17112af53939b2fffb1e4c536355098377ab18c754994d1bc2b [2022-11-19 08:06:25,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:06:25,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:06:25,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:06:25,921 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:06:25,922 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:06:25,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c [2022-11-19 08:06:26,003 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/data/6b2bcb61b/7b51ca22a3264554a21cefeead64ae3c/FLAGadc67adc6 [2022-11-19 08:06:26,576 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:06:26,577 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c [2022-11-19 08:06:26,588 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/data/6b2bcb61b/7b51ca22a3264554a21cefeead64ae3c/FLAGadc67adc6 [2022-11-19 08:06:26,891 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/data/6b2bcb61b/7b51ca22a3264554a21cefeead64ae3c [2022-11-19 08:06:26,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:06:26,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:06:26,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:06:26,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:06:26,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:06:26,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:26" (1/1) ... [2022-11-19 08:06:26,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490e9aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:26, skipping insertion in model container [2022-11-19 08:06:26,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:26" (1/1) ... [2022-11-19 08:06:26,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:06:26,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:06:27,241 WARN L234 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_16ea5279-2b38-4170-856d-071e4035280c/sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c[15987,16000] [2022-11-19 08:06:27,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:06:27,275 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:06:27,370 WARN L234 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_16ea5279-2b38-4170-856d-071e4035280c/sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c[15987,16000] [2022-11-19 08:06:27,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:06:27,417 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:06:27,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:27 WrapperNode [2022-11-19 08:06:27,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:06:27,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:06:27,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:06:27,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:06:27,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:27" (1/1) ... [2022-11-19 08:06:27,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:27" (1/1) ... [2022-11-19 08:06:27,494 INFO L138 Inliner]: procedures = 56, calls = 102, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 225 [2022-11-19 08:06:27,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:06:27,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:06:27,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:06:27,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:06:27,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:27" (1/1) ... [2022-11-19 08:06:27,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:27" (1/1) ... [2022-11-19 08:06:27,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:27" (1/1) ... [2022-11-19 08:06:27,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:27" (1/1) ... [2022-11-19 08:06:27,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:27" (1/1) ... [2022-11-19 08:06:27,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:27" (1/1) ... [2022-11-19 08:06:27,534 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:27" (1/1) ... [2022-11-19 08:06:27,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:27" (1/1) ... [2022-11-19 08:06:27,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:06:27,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:06:27,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:06:27,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:06:27,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:27" (1/1) ... [2022-11-19 08:06:27,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:06:27,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:27,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:06:27,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:06:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:06:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-19 08:06:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-19 08:06:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 08:06:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 08:06:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 08:06:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 08:06:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 08:06:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 08:06:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-19 08:06:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-19 08:06:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2022-11-19 08:06:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2022-11-19 08:06:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-19 08:06:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-19 08:06:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:06:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-19 08:06:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-19 08:06:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:06:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:06:27,705 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:06:27,707 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:06:28,057 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:06:28,268 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:06:28,268 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 08:06:28,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:28 BoogieIcfgContainer [2022-11-19 08:06:28,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:06:28,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:06:28,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:06:28,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:06:28,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:26" (1/3) ... [2022-11-19 08:06:28,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ca69bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:28, skipping insertion in model container [2022-11-19 08:06:28,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:27" (2/3) ... [2022-11-19 08:06:28,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ca69bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:28, skipping insertion in model container [2022-11-19 08:06:28,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:28" (3/3) ... [2022-11-19 08:06:28,288 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product53.cil.c [2022-11-19 08:06:28,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:06:28,312 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:06:28,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:06:28,420 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;@2f6f1e54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:06:28,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:06:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 48 states have internal predecessors, (55), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 08:06:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 08:06:28,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:28,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:28,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:28,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:28,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2066788619, now seen corresponding path program 1 times [2022-11-19 08:06:28,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:28,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901033616] [2022-11-19 08:06:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:28,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:06:28,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:28,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901033616] [2022-11-19 08:06:28,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901033616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:28,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:06:28,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:06:28,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401756085] [2022-11-19 08:06:28,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:28,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:06:28,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:06:28,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:06:28,678 INFO L87 Difference]: Start difference. First operand has 62 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 48 states have internal predecessors, (55), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:28,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:28,771 INFO L93 Difference]: Finished difference Result 122 states and 167 transitions. [2022-11-19 08:06:28,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:06:28,777 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 08:06:28,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:28,788 INFO L225 Difference]: With dead ends: 122 [2022-11-19 08:06:28,788 INFO L226 Difference]: Without dead ends: 57 [2022-11-19 08:06:28,796 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 [2022-11-19 08:06:28,802 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 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 [2022-11-19 08:06:28,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:06:28,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-19 08:06:28,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-19 08:06:28,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 44 states have internal predecessors, (47), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:06:28,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2022-11-19 08:06:28,881 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 12 [2022-11-19 08:06:28,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:28,882 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2022-11-19 08:06:28,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2022-11-19 08:06:28,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 08:06:28,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:28,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:28,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:06:28,889 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:28,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:28,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1228171401, now seen corresponding path program 1 times [2022-11-19 08:06:28,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:28,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052889159] [2022-11-19 08:06:28,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:28,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:29,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:06:29,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:29,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052889159] [2022-11-19 08:06:29,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052889159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:29,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:06:29,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:06:29,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570543996] [2022-11-19 08:06:29,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:29,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:06:29,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:29,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:06:29,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:06:29,083 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:29,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:29,187 INFO L93 Difference]: Finished difference Result 91 states and 119 transitions. [2022-11-19 08:06:29,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:06:29,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 08:06:29,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:29,193 INFO L225 Difference]: With dead ends: 91 [2022-11-19 08:06:29,193 INFO L226 Difference]: Without dead ends: 49 [2022-11-19 08:06:29,194 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 [2022-11-19 08:06:29,195 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:29,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 87 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:06:29,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-19 08:06:29,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-19 08:06:29,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 6 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 08:06:29,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2022-11-19 08:06:29,206 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 13 [2022-11-19 08:06:29,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:29,210 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2022-11-19 08:06:29,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:29,211 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2022-11-19 08:06:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 08:06:29,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:29,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:29,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:06:29,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:29,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1384655328, now seen corresponding path program 1 times [2022-11-19 08:06:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:29,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960139696] [2022-11-19 08:06:29,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:29,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:06:29,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:29,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960139696] [2022-11-19 08:06:29,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960139696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:29,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:06:29,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:06:29,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111190438] [2022-11-19 08:06:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:29,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:06:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:06:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:06:29,317 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:29,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:29,361 INFO L93 Difference]: Finished difference Result 96 states and 125 transitions. [2022-11-19 08:06:29,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:06:29,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-19 08:06:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:29,380 INFO L225 Difference]: With dead ends: 96 [2022-11-19 08:06:29,381 INFO L226 Difference]: Without dead ends: 49 [2022-11-19 08:06:29,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:06:29,383 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:29,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 46 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:06:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-19 08:06:29,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-19 08:06:29,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 39 states have internal predecessors, (40), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 6 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 08:06:29,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2022-11-19 08:06:29,396 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 15 [2022-11-19 08:06:29,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:29,396 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2022-11-19 08:06:29,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:29,397 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2022-11-19 08:06:29,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 08:06:29,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:29,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:29,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:06:29,399 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:29,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:29,400 INFO L85 PathProgramCache]: Analyzing trace with hash 16176383, now seen corresponding path program 1 times [2022-11-19 08:06:29,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:29,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786122059] [2022-11-19 08:06:29,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:29,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:06:29,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:29,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786122059] [2022-11-19 08:06:29,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786122059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:29,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:06:29,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:06:29,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462796259] [2022-11-19 08:06:29,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:29,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:06:29,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:29,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:06:29,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:06:29,551 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:06:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:29,669 INFO L93 Difference]: Finished difference Result 130 states and 170 transitions. [2022-11-19 08:06:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:06:29,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-19 08:06:29,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:29,672 INFO L225 Difference]: With dead ends: 130 [2022-11-19 08:06:29,672 INFO L226 Difference]: Without dead ends: 83 [2022-11-19 08:06:29,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:06:29,679 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 37 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:29,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 97 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:06:29,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-19 08:06:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2022-11-19 08:06:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 61 states have internal predecessors, (67), 14 states have call successors, (14), 13 states have call predecessors, (14), 13 states have return successors, (20), 12 states have call predecessors, (20), 14 states have call successors, (20) [2022-11-19 08:06:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2022-11-19 08:06:29,698 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 21 [2022-11-19 08:06:29,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:29,698 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2022-11-19 08:06:29,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:06:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2022-11-19 08:06:29,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 08:06:29,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:29,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:29,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:06:29,701 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:29,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:29,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1946255968, now seen corresponding path program 1 times [2022-11-19 08:06:29,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:29,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360157343] [2022-11-19 08:06:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:29,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:06:29,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:29,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360157343] [2022-11-19 08:06:29,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360157343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:29,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:06:29,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:06:29,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359306255] [2022-11-19 08:06:29,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:29,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:06:29,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:29,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:06:29,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:06:29,950 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 08:06:30,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:30,116 INFO L93 Difference]: Finished difference Result 226 states and 280 transitions. [2022-11-19 08:06:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:06:30,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-11-19 08:06:30,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:30,123 INFO L225 Difference]: With dead ends: 226 [2022-11-19 08:06:30,124 INFO L226 Difference]: Without dead ends: 147 [2022-11-19 08:06:30,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:06:30,126 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 57 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:30,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 203 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:06:30,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-19 08:06:30,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 122. [2022-11-19 08:06:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 91 states have internal predecessors, (98), 19 states have call successors, (19), 18 states have call predecessors, (19), 21 states have return successors, (28), 19 states have call predecessors, (28), 19 states have call successors, (28) [2022-11-19 08:06:30,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2022-11-19 08:06:30,172 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 28 [2022-11-19 08:06:30,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:30,173 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2022-11-19 08:06:30,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 08:06:30,174 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2022-11-19 08:06:30,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 08:06:30,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:30,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:30,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:06:30,179 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:30,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:30,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1628976253, now seen corresponding path program 1 times [2022-11-19 08:06:30,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:30,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333843689] [2022-11-19 08:06:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:30,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:06:30,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:30,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333843689] [2022-11-19 08:06:30,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333843689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:30,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:06:30,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 08:06:30,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166379527] [2022-11-19 08:06:30,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:30,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:06:30,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:30,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:06:30,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:06:30,438 INFO L87 Difference]: Start difference. First operand 122 states and 145 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 08:06:31,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:31,043 INFO L93 Difference]: Finished difference Result 296 states and 368 transitions. [2022-11-19 08:06:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 08:06:31,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2022-11-19 08:06:31,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:31,057 INFO L225 Difference]: With dead ends: 296 [2022-11-19 08:06:31,057 INFO L226 Difference]: Without dead ends: 217 [2022-11-19 08:06:31,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:06:31,060 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 141 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:31,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 287 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 08:06:31,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-19 08:06:31,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 198. [2022-11-19 08:06:31,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 132 states have (on average 1.2121212121212122) internal successors, (160), 149 states have internal predecessors, (160), 31 states have call successors, (31), 27 states have call predecessors, (31), 34 states have return successors, (46), 32 states have call predecessors, (46), 31 states have call successors, (46) [2022-11-19 08:06:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 237 transitions. [2022-11-19 08:06:31,099 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 237 transitions. Word has length 31 [2022-11-19 08:06:31,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:31,099 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 237 transitions. [2022-11-19 08:06:31,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 08:06:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 237 transitions. [2022-11-19 08:06:31,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-19 08:06:31,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:31,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:31,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:06:31,102 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:31,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:31,103 INFO L85 PathProgramCache]: Analyzing trace with hash -327777137, now seen corresponding path program 1 times [2022-11-19 08:06:31,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:31,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807277398] [2022-11-19 08:06:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:31,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:06:31,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:31,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807277398] [2022-11-19 08:06:31,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807277398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:31,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:06:31,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 08:06:31,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339001501] [2022-11-19 08:06:31,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:31,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 08:06:31,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:31,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 08:06:31,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:06:31,590 INFO L87 Difference]: Start difference. First operand 198 states and 237 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 08:06:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:32,462 INFO L93 Difference]: Finished difference Result 360 states and 444 transitions. [2022-11-19 08:06:32,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-19 08:06:32,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 47 [2022-11-19 08:06:32,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:32,468 INFO L225 Difference]: With dead ends: 360 [2022-11-19 08:06:32,468 INFO L226 Difference]: Without dead ends: 272 [2022-11-19 08:06:32,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-11-19 08:06:32,474 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 174 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:32,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 153 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 08:06:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-19 08:06:32,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 247. [2022-11-19 08:06:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 165 states have (on average 1.2424242424242424) internal successors, (205), 186 states have internal predecessors, (205), 38 states have call successors, (38), 32 states have call predecessors, (38), 43 states have return successors, (63), 40 states have call predecessors, (63), 38 states have call successors, (63) [2022-11-19 08:06:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 306 transitions. [2022-11-19 08:06:32,551 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 306 transitions. Word has length 47 [2022-11-19 08:06:32,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:32,553 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 306 transitions. [2022-11-19 08:06:32,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 08:06:32,554 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 306 transitions. [2022-11-19 08:06:32,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-19 08:06:32,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:32,558 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:32,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:06:32,561 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:32,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:32,562 INFO L85 PathProgramCache]: Analyzing trace with hash -924242484, now seen corresponding path program 1 times [2022-11-19 08:06:32,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:32,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513318507] [2022-11-19 08:06:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:32,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:06:33,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:33,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513318507] [2022-11-19 08:06:33,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513318507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:06:33,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140277181] [2022-11-19 08:06:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:33,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:33,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:33,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:33,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:06:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:33,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-19 08:06:33,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:06:33,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:06:34,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140277181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:06:34,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [929054845] [2022-11-19 08:06:34,547 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-11-19 08:06:34,547 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:06:34,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:06:34,557 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:06:34,558 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:06:37,176 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 31 for LOIs [2022-11-19 08:06:37,181 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2022-11-19 08:06:37,244 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 24 for LOIs [2022-11-19 08:06:37,287 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 24 for LOIs [2022-11-19 08:06:37,309 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:06:40,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [929054845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:40,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:06:40,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [14, 9, 11] total 50 [2022-11-19 08:06:40,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652527134] [2022-11-19 08:06:40,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:40,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-19 08:06:40,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:40,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-19 08:06:40,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=2134, Unknown=0, NotChecked=0, Total=2450 [2022-11-19 08:06:40,222 INFO L87 Difference]: Start difference. First operand 247 states and 306 transitions. Second operand has 22 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 08:06:47,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:47,175 INFO L93 Difference]: Finished difference Result 668 states and 876 transitions. [2022-11-19 08:06:47,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-19 08:06:47,175 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 50 [2022-11-19 08:06:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:47,180 INFO L225 Difference]: With dead ends: 668 [2022-11-19 08:06:47,180 INFO L226 Difference]: Without dead ends: 516 [2022-11-19 08:06:47,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1690 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=611, Invalid=4081, Unknown=0, NotChecked=0, Total=4692 [2022-11-19 08:06:47,184 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 162 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:47,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 465 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 08:06:47,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-11-19 08:06:47,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 454. [2022-11-19 08:06:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 313 states have (on average 1.2268370607028753) internal successors, (384), 343 states have internal predecessors, (384), 65 states have call successors, (65), 55 states have call predecessors, (65), 75 states have return successors, (110), 72 states have call predecessors, (110), 65 states have call successors, (110) [2022-11-19 08:06:47,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 559 transitions. [2022-11-19 08:06:47,272 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 559 transitions. Word has length 50 [2022-11-19 08:06:47,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:47,273 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 559 transitions. [2022-11-19 08:06:47,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 08:06:47,273 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 559 transitions. [2022-11-19 08:06:47,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-19 08:06:47,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:47,275 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 08:06:47,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:06:47,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 08:06:47,481 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:47,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:47,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1132066367, now seen corresponding path program 1 times [2022-11-19 08:06:47,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:47,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104742287] [2022-11-19 08:06:47,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:47,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:06:47,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:47,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104742287] [2022-11-19 08:06:47,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104742287] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:06:47,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082098017] [2022-11-19 08:06:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:47,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:47,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:47,961 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:47,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:06:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:48,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-19 08:06:48,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:06:48,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:06:48,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082098017] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:06:48,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1206921849] [2022-11-19 08:06:48,874 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2022-11-19 08:06:48,876 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:06:48,877 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:06:48,877 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:06:48,877 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:06:52,708 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 129 for LOIs [2022-11-19 08:06:52,731 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 28 for LOIs [2022-11-19 08:06:52,895 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 25 for LOIs [2022-11-19 08:06:52,933 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 25 for LOIs [2022-11-19 08:06:52,954 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 43 for LOIs [2022-11-19 08:06:52,961 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 29 for LOIs [2022-11-19 08:06:52,964 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:06:59,531 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5975#(and (<= ~methaneLevelCritical~0 1) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~4#1|) (= ~head~0.offset 0) (= |timeShift_getWaterLevel_~retValue_acc~10#1| ~waterLevel~0) (= 1 ~systemActive~0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~9#1| |timeShift_getWaterLevel_#res#1|) (<= 0 ~methaneLevelCritical~0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~9#1| 0) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~4#1|) (= |timeShift_getWaterLevel_~retValue_acc~10#1| |timeShift_getWaterLevel_#res#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 08:06:59,531 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:06:59,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:06:59,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 11] total 30 [2022-11-19 08:06:59,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325133188] [2022-11-19 08:06:59,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:06:59,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-19 08:06:59,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:59,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-19 08:06:59,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=3088, Unknown=0, NotChecked=0, Total=3422 [2022-11-19 08:06:59,535 INFO L87 Difference]: Start difference. First operand 454 states and 559 transitions. Second operand has 30 states, 27 states have (on average 3.6666666666666665) internal successors, (99), 27 states have internal predecessors, (99), 13 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2022-11-19 08:07:04,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:04,388 INFO L93 Difference]: Finished difference Result 983 states and 1250 transitions. [2022-11-19 08:07:04,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-19 08:07:04,391 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 3.6666666666666665) internal successors, (99), 27 states have internal predecessors, (99), 13 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) Word has length 53 [2022-11-19 08:07:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:04,396 INFO L225 Difference]: With dead ends: 983 [2022-11-19 08:07:04,396 INFO L226 Difference]: Without dead ends: 717 [2022-11-19 08:07:04,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4401 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=1422, Invalid=11234, Unknown=0, NotChecked=0, Total=12656 [2022-11-19 08:07:04,403 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 1185 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 3060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:04,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 690 Invalid, 3060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [816 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-19 08:07:04,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-11-19 08:07:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 486. [2022-11-19 08:07:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 332 states have (on average 1.1656626506024097) internal successors, (387), 359 states have internal predecessors, (387), 70 states have call successors, (70), 65 states have call predecessors, (70), 83 states have return successors, (95), 81 states have call predecessors, (95), 70 states have call successors, (95) [2022-11-19 08:07:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 552 transitions. [2022-11-19 08:07:04,523 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 552 transitions. Word has length 53 [2022-11-19 08:07:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:04,524 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 552 transitions. [2022-11-19 08:07:04,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 3.6666666666666665) internal successors, (99), 27 states have internal predecessors, (99), 13 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2022-11-19 08:07:04,524 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 552 transitions. [2022-11-19 08:07:04,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-19 08:07:04,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:04,527 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:04,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:07:04,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-19 08:07:04,733 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:04,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:04,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1638342415, now seen corresponding path program 2 times [2022-11-19 08:07:04,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:04,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732741557] [2022-11-19 08:07:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:04,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 08:07:05,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:05,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732741557] [2022-11-19 08:07:05,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732741557] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:07:05,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212130586] [2022-11-19 08:07:05,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:07:05,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:07:05,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:07:05,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:07:05,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:07:05,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 08:07:05,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:07:05,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 08:07:05,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-19 08:07:05,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:07:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-19 08:07:06,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212130586] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 08:07:06,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:07:06,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18, 6] total 23 [2022-11-19 08:07:06,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905301255] [2022-11-19 08:07:06,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:06,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:07:06,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:06,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:07:06,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-11-19 08:07:06,080 INFO L87 Difference]: Start difference. First operand 486 states and 552 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 08:07:06,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:06,253 INFO L93 Difference]: Finished difference Result 797 states and 921 transitions. [2022-11-19 08:07:06,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:07:06,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2022-11-19 08:07:06,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:06,259 INFO L225 Difference]: With dead ends: 797 [2022-11-19 08:07:06,259 INFO L226 Difference]: Without dead ends: 532 [2022-11-19 08:07:06,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-11-19 08:07:06,261 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 39 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:06,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 140 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:07:06,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-11-19 08:07:06,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 485. [2022-11-19 08:07:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 331 states have (on average 1.1601208459214503) internal successors, (384), 358 states have internal predecessors, (384), 70 states have call successors, (70), 65 states have call predecessors, (70), 83 states have return successors, (95), 81 states have call predecessors, (95), 70 states have call successors, (95) [2022-11-19 08:07:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 549 transitions. [2022-11-19 08:07:06,354 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 549 transitions. Word has length 79 [2022-11-19 08:07:06,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:06,356 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 549 transitions. [2022-11-19 08:07:06,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 08:07:06,357 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 549 transitions. [2022-11-19 08:07:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-19 08:07:06,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:06,360 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:06,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:07:06,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:07:06,575 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:06,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:06,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1865703158, now seen corresponding path program 1 times [2022-11-19 08:07:06,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:06,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464633572] [2022-11-19 08:07:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:06,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 08:07:07,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:07,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464633572] [2022-11-19 08:07:07,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464633572] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:07:07,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268365223] [2022-11-19 08:07:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:07,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:07:07,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:07:07,365 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:07:07,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:07:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:07,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-19 08:07:07,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 08:07:07,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:07:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 08:07:07,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268365223] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:07:07,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1069850739] [2022-11-19 08:07:07,745 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-19 08:07:07,745 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:07:07,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:07:07,746 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:07:07,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:07:11,316 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 129 for LOIs [2022-11-19 08:07:11,330 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 28 for LOIs [2022-11-19 08:07:11,445 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 25 for LOIs [2022-11-19 08:07:11,494 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 25 for LOIs [2022-11-19 08:07:11,616 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 43 for LOIs [2022-11-19 08:07:11,621 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 26 for LOIs [2022-11-19 08:07:11,622 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 29 for LOIs [2022-11-19 08:07:11,624 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:07:18,866 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11422#(and (<= ~methaneLevelCritical~0 1) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~4#1|) (= ~head~0.offset 0) (<= 1 ~systemActive~0) (= |timeShift_getWaterLevel_~retValue_acc~10#1| ~waterLevel~0) (<= |#NULL.offset| 0) (<= 0 ~head~0.base) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~9#1| |timeShift_getWaterLevel_#res#1|) (<= 0 ~methaneLevelCritical~0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~9#1| 0) (<= 0 ~pumpRunning~0) (<= ~head~0.base 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~4#1|) (<= 0 |#NULL.offset|) (= |timeShift_getWaterLevel_~retValue_acc~10#1| |timeShift_getWaterLevel_#res#1|) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 08:07:18,866 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:07:18,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:07:18,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 6, 6] total 23 [2022-11-19 08:07:18,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709630462] [2022-11-19 08:07:18,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:07:18,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-19 08:07:18,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:18,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-19 08:07:18,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=2594, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 08:07:18,869 INFO L87 Difference]: Start difference. First operand 485 states and 549 transitions. Second operand has 23 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 9 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-19 08:07:22,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:22,752 INFO L93 Difference]: Finished difference Result 1120 states and 1324 transitions. [2022-11-19 08:07:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-19 08:07:22,752 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 9 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) Word has length 82 [2022-11-19 08:07:22,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:22,757 INFO L225 Difference]: With dead ends: 1120 [2022-11-19 08:07:22,757 INFO L226 Difference]: Without dead ends: 822 [2022-11-19 08:07:22,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 216 SyntacticMatches, 7 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3616 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=1080, Invalid=9426, Unknown=0, NotChecked=0, Total=10506 [2022-11-19 08:07:22,762 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 999 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:22,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 502 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-19 08:07:22,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-19 08:07:22,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 747. [2022-11-19 08:07:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 501 states have (on average 1.1497005988023952) internal successors, (576), 551 states have internal predecessors, (576), 111 states have call successors, (111), 101 states have call predecessors, (111), 134 states have return successors, (166), 121 states have call predecessors, (166), 111 states have call successors, (166) [2022-11-19 08:07:22,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 853 transitions. [2022-11-19 08:07:22,906 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 853 transitions. Word has length 82 [2022-11-19 08:07:22,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:22,908 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 853 transitions. [2022-11-19 08:07:22,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 9 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-19 08:07:22,908 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 853 transitions. [2022-11-19 08:07:22,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 08:07:22,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:22,911 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 08:07:22,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:07:23,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:07:23,118 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:23,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:23,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1673710427, now seen corresponding path program 1 times [2022-11-19 08:07:23,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:23,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954801269] [2022-11-19 08:07:23,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:23,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-19 08:07:23,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:23,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954801269] [2022-11-19 08:07:23,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954801269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:23,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:23,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:07:23,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736001928] [2022-11-19 08:07:23,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:23,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:07:23,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:23,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:07:23,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:07:23,277 INFO L87 Difference]: Start difference. First operand 747 states and 853 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-19 08:07:23,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:23,447 INFO L93 Difference]: Finished difference Result 749 states and 854 transitions. [2022-11-19 08:07:23,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:07:23,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 83 [2022-11-19 08:07:23,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:23,453 INFO L225 Difference]: With dead ends: 749 [2022-11-19 08:07:23,453 INFO L226 Difference]: Without dead ends: 747 [2022-11-19 08:07:23,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:07:23,455 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 44 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:23,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 150 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:07:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-19 08:07:23,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2022-11-19 08:07:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 501 states have (on average 1.1437125748502994) internal successors, (573), 551 states have internal predecessors, (573), 111 states have call successors, (111), 101 states have call predecessors, (111), 134 states have return successors, (166), 121 states have call predecessors, (166), 111 states have call successors, (166) [2022-11-19 08:07:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 850 transitions. [2022-11-19 08:07:23,633 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 850 transitions. Word has length 83 [2022-11-19 08:07:23,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:23,633 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 850 transitions. [2022-11-19 08:07:23,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-19 08:07:23,634 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 850 transitions. [2022-11-19 08:07:23,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-19 08:07:23,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:23,644 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:23,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 08:07:23,644 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:23,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:23,645 INFO L85 PathProgramCache]: Analyzing trace with hash -544063413, now seen corresponding path program 1 times [2022-11-19 08:07:23,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:23,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597495024] [2022-11-19 08:07:23,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:23,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:07:24,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:24,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597495024] [2022-11-19 08:07:24,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597495024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:07:24,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071686291] [2022-11-19 08:07:24,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:24,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:07:24,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:07:24,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:07:24,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:07:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:24,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 08:07:24,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 08:07:24,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:07:24,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071686291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:24,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:07:24,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 18 [2022-11-19 08:07:24,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920144844] [2022-11-19 08:07:24,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:24,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:07:24,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:24,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:07:24,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-11-19 08:07:24,596 INFO L87 Difference]: Start difference. First operand 747 states and 850 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 08:07:24,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:24,893 INFO L93 Difference]: Finished difference Result 1282 states and 1467 transitions. [2022-11-19 08:07:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:07:24,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 91 [2022-11-19 08:07:24,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:24,898 INFO L225 Difference]: With dead ends: 1282 [2022-11-19 08:07:24,898 INFO L226 Difference]: Without dead ends: 627 [2022-11-19 08:07:24,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-19 08:07:24,903 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 49 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:24,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 258 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:07:24,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-11-19 08:07:25,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 621. [2022-11-19 08:07:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 417 states have (on average 1.1342925659472423) internal successors, (473), 459 states have internal predecessors, (473), 94 states have call successors, (94), 88 states have call predecessors, (94), 109 states have return successors, (124), 98 states have call predecessors, (124), 94 states have call successors, (124) [2022-11-19 08:07:25,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 691 transitions. [2022-11-19 08:07:25,037 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 691 transitions. Word has length 91 [2022-11-19 08:07:25,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:25,038 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 691 transitions. [2022-11-19 08:07:25,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 08:07:25,038 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 691 transitions. [2022-11-19 08:07:25,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-19 08:07:25,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:25,040 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:25,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:07:25,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 08:07:25,246 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:25,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1747543467, now seen corresponding path program 2 times [2022-11-19 08:07:25,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:25,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576562641] [2022-11-19 08:07:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:25,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 41 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-19 08:07:25,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:25,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576562641] [2022-11-19 08:07:25,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576562641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:07:25,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787782286] [2022-11-19 08:07:25,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:07:25,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:07:25,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:07:25,456 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:07:25,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:07:25,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 08:07:25,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:07:25,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-19 08:07:25,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 64 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-19 08:07:25,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:07:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 52 proven. 7 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-19 08:07:26,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787782286] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:07:26,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1179851296] [2022-11-19 08:07:26,305 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2022-11-19 08:07:26,305 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:07:26,305 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:07:26,306 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:07:26,306 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:07:29,296 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 127 for LOIs [2022-11-19 08:07:29,311 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2022-11-19 08:07:29,486 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 50 for LOIs [2022-11-19 08:07:29,812 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 60 for LOIs [2022-11-19 08:07:29,986 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 41 for LOIs [2022-11-19 08:07:29,992 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 33 for LOIs [2022-11-19 08:07:29,994 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 28 for LOIs [2022-11-19 08:07:29,997 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:07:36,946 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20741#(and (<= ~methaneLevelCritical~0 1) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~4#1|) (= ~head~0.offset 0) (= |timeShift_getWaterLevel_~retValue_acc~10#1| ~waterLevel~0) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= 1 ~systemActive~0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~9#1| |timeShift_getWaterLevel_#res#1|) (<= 0 ~methaneLevelCritical~0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~9#1| 0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~4#1|) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (= |timeShift_getWaterLevel_~retValue_acc~10#1| |timeShift_getWaterLevel_#res#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 08:07:36,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:07:36,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:07:36,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 21 [2022-11-19 08:07:36,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045235524] [2022-11-19 08:07:36,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:07:36,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 08:07:36,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:36,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 08:07:36,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=2707, Unknown=0, NotChecked=0, Total=3080 [2022-11-19 08:07:36,949 INFO L87 Difference]: Start difference. First operand 621 states and 691 transitions. Second operand has 21 states, 20 states have (on average 5.95) internal successors, (119), 21 states have internal predecessors, (119), 9 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (26), 10 states have call predecessors, (26), 7 states have call successors, (26) [2022-11-19 08:07:38,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:38,842 INFO L93 Difference]: Finished difference Result 1364 states and 1603 transitions. [2022-11-19 08:07:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-19 08:07:38,843 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.95) internal successors, (119), 21 states have internal predecessors, (119), 9 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (26), 10 states have call predecessors, (26), 7 states have call successors, (26) Word has length 109 [2022-11-19 08:07:38,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:38,844 INFO L225 Difference]: With dead ends: 1364 [2022-11-19 08:07:38,844 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 08:07:38,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 277 SyntacticMatches, 12 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2567 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=827, Invalid=5653, Unknown=0, NotChecked=0, Total=6480 [2022-11-19 08:07:38,849 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 315 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:38,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 687 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 08:07:38,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 08:07:38,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 08:07:38,851 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) [2022-11-19 08:07:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 08:07:38,851 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2022-11-19 08:07:38,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:38,852 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 08:07:38,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.95) internal successors, (119), 21 states have internal predecessors, (119), 9 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (26), 10 states have call predecessors, (26), 7 states have call successors, (26) [2022-11-19 08:07:38,852 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 08:07:38,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 08:07:38,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:07:38,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:07:39,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:07:39,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 08:07:55,108 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 615 622) the Hoare annotation is: (or (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1))) (not (= 1 ~systemActive~0)) (not (<= 1 ~waterLevel~0)) (not (= |old(~pumpRunning~0)| 1)) (= ~pumpRunning~0 1)) [2022-11-19 08:07:55,109 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 615 622) no Hoare annotation was computed. [2022-11-19 08:07:55,109 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 522 528) no Hoare annotation was computed. [2022-11-19 08:07:55,109 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 522 528) the Hoare annotation is: true [2022-11-19 08:07:55,109 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 792 803) the Hoare annotation is: (let ((.cse4 (not (= |old(~methaneLevelCritical~0)| 1)))) (let ((.cse1 (not (<= 2 ~waterLevel~0))) (.cse3 (not (= ~pumpRunning~0 1))) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse6 (and (not (= |old(~methaneLevelCritical~0)| 0)) .cse4)) (.cse7 (not (= ~pumpRunning~0 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse8 (not (<= 1 ~waterLevel~0))) (.cse2 (= ~methaneLevelCritical~0 1))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 .cse0 .cse6 .cse1 .cse2 .cse3) (or .cse7 .cse5 .cse0 .cse6 .cse8 .cse2) (or .cse7 .cse0 .cse8 .cse2 .cse4)))) [2022-11-19 08:07:55,110 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 792 803) no Hoare annotation was computed. [2022-11-19 08:07:55,110 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 896 925) no Hoare annotation was computed. [2022-11-19 08:07:55,110 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 896 925) the Hoare annotation is: true [2022-11-19 08:07:55,110 INFO L902 garLoopResultBuilder]: At program point L921(lines 896 925) the Hoare annotation is: true [2022-11-19 08:07:55,110 INFO L899 garLoopResultBuilder]: For program point L917(line 917) no Hoare annotation was computed. [2022-11-19 08:07:55,110 INFO L899 garLoopResultBuilder]: For program point L910(lines 910 914) no Hoare annotation was computed. [2022-11-19 08:07:55,111 INFO L902 garLoopResultBuilder]: At program point L910-1(lines 910 914) the Hoare annotation is: true [2022-11-19 08:07:55,111 INFO L902 garLoopResultBuilder]: At program point L906-2(lines 906 920) the Hoare annotation is: true [2022-11-19 08:07:55,111 INFO L902 garLoopResultBuilder]: At program point L902(line 902) the Hoare annotation is: true [2022-11-19 08:07:55,116 INFO L899 garLoopResultBuilder]: For program point L902-1(line 902) no Hoare annotation was computed. [2022-11-19 08:07:55,116 INFO L895 garLoopResultBuilder]: At program point L601(line 601) the Hoare annotation is: (let ((.cse0 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= |old(~pumpRunning~0)| 1)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse0 .cse1 (not (<= 1 |old(~waterLevel~0)|))))) [2022-11-19 08:07:55,117 INFO L895 garLoopResultBuilder]: At program point L601-1(lines 582 606) the Hoare annotation is: (let ((.cse5 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse9 (= 1 ~systemActive~0)) (.cse7 (= ~methaneLevelCritical~0 0)) (.cse8 (= ~methaneLevelCritical~0 1)) (.cse10 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (= ~pumpRunning~0 0)) (.cse4 (not .cse10)) (.cse1 (and (not .cse7) (not .cse8))) (.cse2 (not .cse9)) (.cse6 (and (or .cse7 .cse8) (<= 2 ~waterLevel~0) .cse9 .cse10 .cse5 (= ~pumpRunning~0 1))) (.cse3 (not (<= 2 |old(~waterLevel~0)|)))) (and (or (and .cse0 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0)) .cse1 .cse2 (not (= |old(~pumpRunning~0)| 1)) .cse3) (or .cse4 (and .cse0 .cse5) .cse1 .cse2 (not (<= 1 |old(~waterLevel~0)|)) .cse6) (or .cse4 .cse1 .cse2 .cse6 .cse3)))) [2022-11-19 08:07:55,117 INFO L899 garLoopResultBuilder]: For program point L502-1(lines 501 520) no Hoare annotation was computed. [2022-11-19 08:07:55,117 INFO L899 garLoopResultBuilder]: For program point L590(lines 590 598) no Hoare annotation was computed. [2022-11-19 08:07:55,120 INFO L895 garLoopResultBuilder]: At program point L586(lines 586 603) the Hoare annotation is: (let ((.cse0 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= |old(~pumpRunning~0)| 1)) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= ~pumpRunning~0 1)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse0 .cse1 (not (<= 1 |old(~waterLevel~0)|))))) [2022-11-19 08:07:55,120 INFO L895 garLoopResultBuilder]: At program point L760(line 760) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 .cse2) (or .cse1 .cse2 (not (= |old(~pumpRunning~0)| 1)) .cse3) (or .cse0 .cse1 .cse2 .cse3))) [2022-11-19 08:07:55,120 INFO L895 garLoopResultBuilder]: At program point L509-1(lines 509 515) the Hoare annotation is: (let ((.cse5 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse9 (= 1 ~systemActive~0)) (.cse7 (= ~methaneLevelCritical~0 0)) (.cse8 (= ~methaneLevelCritical~0 1)) (.cse10 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (= ~pumpRunning~0 0)) (.cse4 (not .cse10)) (.cse1 (and (not .cse7) (not .cse8))) (.cse2 (not .cse9)) (.cse6 (and (or .cse7 .cse8) (<= 2 ~waterLevel~0) .cse9 .cse10 .cse5 (= ~pumpRunning~0 1))) (.cse3 (not (<= 2 |old(~waterLevel~0)|)))) (and (or (and .cse0 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0)) .cse1 .cse2 (not (= |old(~pumpRunning~0)| 1)) .cse3) (or .cse4 (and .cse0 .cse5) .cse1 .cse2 (not (<= 1 |old(~waterLevel~0)|)) .cse6) (or .cse4 .cse1 .cse2 .cse6 .cse3)))) [2022-11-19 08:07:55,121 INFO L895 garLoopResultBuilder]: At program point L596(line 596) the Hoare annotation is: (let ((.cse4 (not (= ~methaneLevelCritical~0 1)))) (let ((.cse2 (not (= |old(~pumpRunning~0)| 1))) (.cse5 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (and (not (= ~methaneLevelCritical~0 0)) .cse4)) (.cse1 (not (= 1 ~systemActive~0))) (.cse3 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0) (= ~pumpRunning~0 1)) .cse2 .cse3) (or .cse1 .cse2 .cse4 .cse3) (or .cse5 (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1) (or .cse5 .cse0 .cse1 .cse3)))) [2022-11-19 08:07:55,121 INFO L899 garLoopResultBuilder]: For program point L881(lines 881 887) no Hoare annotation was computed. [2022-11-19 08:07:55,121 INFO L895 garLoopResultBuilder]: At program point L592(line 592) the Hoare annotation is: (let ((.cse0 (= ~methaneLevelCritical~0 1))) (let ((.cse4 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (and (not (= ~methaneLevelCritical~0 0)) (not .cse0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (not (<= 2 |old(~waterLevel~0)|)))) (and (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0) .cse0 (= ~pumpRunning~0 1)) .cse1 .cse2 (not (= |old(~pumpRunning~0)| 1)) .cse3) (or .cse4 (not (= |old(~waterLevel~0)| 1)) .cse1 .cse2) (or .cse4 .cse1 .cse2 .cse3)))) [2022-11-19 08:07:55,121 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 498 521) the Hoare annotation is: (let ((.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= |old(~pumpRunning~0)| 1)) (and .cse2 (= ~pumpRunning~0 1)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) .cse2) .cse0 .cse1 (not (<= 1 |old(~waterLevel~0)|))))) [2022-11-19 08:07:55,122 INFO L895 garLoopResultBuilder]: At program point L877(lines 877 890) the Hoare annotation is: (let ((.cse11 (= ~methaneLevelCritical~0 0))) (let ((.cse9 (= 1 ~systemActive~0)) (.cse10 (= |old(~pumpRunning~0)| 0)) (.cse5 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~9#1| ~waterLevel~0)) (.cse6 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse8 (not .cse11)) (.cse12 (= ~methaneLevelCritical~0 1))) (let ((.cse4 (= ~pumpRunning~0 0)) (.cse1 (and .cse8 (not .cse12))) (.cse3 (and (or .cse11 .cse12) (not (= |old(~waterLevel~0)| 1)) .cse9 .cse10 .cse5 (<= 1 |timeShift___utac_acc__Specification4_spec__1_~tmp~9#1|) .cse6 (= ~pumpRunning~0 1))) (.cse7 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not .cse10)) (.cse2 (not .cse9))) (and (or .cse0 .cse1 .cse2 (not (<= 1 |old(~waterLevel~0)|)) .cse3 (and .cse4 .cse5 .cse6)) (or .cse1 .cse2 (not (= |old(~pumpRunning~0)| 1)) (and .cse4 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0) .cse5) .cse7) (or .cse0 .cse1 .cse2 .cse3 .cse7) (or .cse0 (not (= |#NULL.offset| 0)) .cse2 (and (= |timeShift___utac_acc__Specification4_spec__1_~tmp~9#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~10#1| |timeShift_getWaterLevel_#res#1|)) (not (= ~head~0.offset 0)) .cse8 (not (= |#NULL.base| 0)) (not (= |old(~waterLevel~0)| 2)) (not (<= 0 |#StackHeapBarrier|)) (not (= ~head~0.base 0)) (not (= ~cleanupTimeShifts~0 4))))))) [2022-11-19 08:07:55,122 INFO L895 garLoopResultBuilder]: At program point L877-1(lines 869 893) the Hoare annotation is: (let ((.cse6 (not (= ~methaneLevelCritical~0 0)))) (let ((.cse3 (= ~pumpRunning~0 0)) (.cse1 (and .cse6 (not (= ~methaneLevelCritical~0 1)))) (.cse4 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~9#1| ~waterLevel~0)) (.cse5 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 .cse2 (and .cse3 .cse4 (= ~waterLevel~0 1))) (or .cse1 .cse2 (not (= |old(~pumpRunning~0)| 1)) (and .cse3 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0) .cse4) .cse5) (or .cse0 .cse1 .cse2 (and .cse4 (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) .cse5) (or .cse0 (not (= |#NULL.offset| 0)) .cse2 (and (= |timeShift___utac_acc__Specification4_spec__1_~tmp~9#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~10#1| |timeShift_getWaterLevel_#res#1|)) (not (= ~head~0.offset 0)) .cse6 (not (= |#NULL.base| 0)) (not (= |old(~waterLevel~0)| 2)) (not (<= 0 |#StackHeapBarrier|)) (not (= ~head~0.base 0)) (not (= ~cleanupTimeShifts~0 4)))))) [2022-11-19 08:07:55,122 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 498 521) no Hoare annotation was computed. [2022-11-19 08:07:55,122 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 760) no Hoare annotation was computed. [2022-11-19 08:07:55,123 INFO L895 garLoopResultBuilder]: At program point L473(lines 430 475) the Hoare annotation is: (let ((.cse0 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2 (= ~pumpRunning~0 1)) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 (<= 1 ~waterLevel~0)))) [2022-11-19 08:07:55,123 INFO L899 garLoopResultBuilder]: For program point L440(lines 440 446) no Hoare annotation was computed. [2022-11-19 08:07:55,123 INFO L899 garLoopResultBuilder]: For program point L440-1(lines 440 446) no Hoare annotation was computed. [2022-11-19 08:07:55,123 INFO L895 garLoopResultBuilder]: At program point L977(lines 977 984) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= ~pumpRunning~0 0) (= (select |#valid| 9) 1) (= (select |#length| 12) 25) (= (select |#valid| 11) 1) (= ~methaneLevelCritical~0 0) (= 30 (select |#length| 4)) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) (= |ULTIMATE.start_valid_product_~retValue_acc~8#1| 1) (= 1 ~systemActive~0) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (= |ULTIMATE.start_main_~tmp~10#1| |ULTIMATE.start_valid_product_#res#1|) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= ~head~0.base 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= 9 (select |#length| 11)) (= ~waterLevel~0 1) (= (select .cse0 0) 48) (= |ULTIMATE.start_valid_product_~retValue_acc~8#1| |ULTIMATE.start_valid_product_#res#1|) (= (select |#valid| 6) 1) (= (select .cse0 1) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))) [2022-11-19 08:07:55,123 INFO L902 garLoopResultBuilder]: At program point L977-2(lines 977 984) the Hoare annotation is: true [2022-11-19 08:07:55,124 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-19 08:07:55,124 INFO L895 garLoopResultBuilder]: At program point L466-2(lines 460 471) the Hoare annotation is: (let ((.cse0 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2 (= ~pumpRunning~0 1)) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 (<= 1 ~waterLevel~0)))) [2022-11-19 08:07:55,124 INFO L899 garLoopResultBuilder]: For program point L450(lines 450 456) no Hoare annotation was computed. [2022-11-19 08:07:55,124 INFO L899 garLoopResultBuilder]: For program point L450-1(lines 450 456) no Hoare annotation was computed. [2022-11-19 08:07:55,124 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 08:07:55,124 INFO L902 garLoopResultBuilder]: At program point L479(lines 420 483) the Hoare annotation is: true [2022-11-19 08:07:55,125 INFO L895 garLoopResultBuilder]: At program point L442(line 442) the Hoare annotation is: (let ((.cse0 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2 (= ~pumpRunning~0 1)) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 (<= 1 ~waterLevel~0)))) [2022-11-19 08:07:55,125 INFO L895 garLoopResultBuilder]: At program point L476(lines 429 477) the Hoare annotation is: false [2022-11-19 08:07:55,125 INFO L899 garLoopResultBuilder]: For program point L431(lines 430 475) no Hoare annotation was computed. [2022-11-19 08:07:55,125 INFO L895 garLoopResultBuilder]: At program point L452(line 452) the Hoare annotation is: (let ((.cse0 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2 (= ~pumpRunning~0 1)) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 (<= 1 ~waterLevel~0)))) [2022-11-19 08:07:55,125 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 530 554) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1))) (not (= 1 ~systemActive~0)) (not (<= 1 ~waterLevel~0))) [2022-11-19 08:07:55,126 INFO L895 garLoopResultBuilder]: At program point L544(line 544) the Hoare annotation is: (let ((.cse4 (not (= ~methaneLevelCritical~0 0)))) (let ((.cse1 (and .cse4 (not (= ~methaneLevelCritical~0 1)))) (.cse3 (not (= ~waterLevel~0 1))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 (not (<= 2 ~waterLevel~0))) (or .cse3 .cse0 .cse1 .cse2 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 0))) (or .cse3 .cse0 (not (= |#NULL.offset| 0)) (and (= 1 |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_~retValue_acc~11#1|) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~retValue_acc~5#1| |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~tmp___0~1#1|) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_~retValue_acc~11#1|) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~tmp~7#1|) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~retValue_acc~5#1| |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_#res#1|) (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_#res#1|)) .cse2 (not (= ~head~0.offset 0)) .cse4 (not (= |#NULL.base| 0)) (not (<= 0 |#StackHeapBarrier|)) (not (= ~head~0.base 0)) (not (= ~cleanupTimeShifts~0 4)))))) [2022-11-19 08:07:55,126 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 530 554) no Hoare annotation was computed. [2022-11-19 08:07:55,126 INFO L895 garLoopResultBuilder]: At program point L538(lines 538 546) the Hoare annotation is: (let ((.cse6 (not (= ~methaneLevelCritical~0 0)))) (let ((.cse2 (not (= |#NULL.offset| 0))) (.cse3 (and (let ((.cse14 (< ~waterLevel~0 2)) (.cse13 (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_~retValue_acc~11#1|))) (or (and (= 1 |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_~retValue_acc~11#1|) .cse13 .cse14) (and (not .cse14) .cse13 (= 0 |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_~retValue_acc~11#1|)))) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~retValue_acc~5#1| |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~tmp___0~1#1|) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~tmp~7#1|) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~retValue_acc~5#1| |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_#res#1|) (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_#res#1|))) (.cse5 (not (= ~head~0.offset 0))) (.cse7 (not (= |#NULL.base| 0))) (.cse8 (not (<= 0 |#StackHeapBarrier|))) (.cse9 (not (= ~head~0.base 0))) (.cse10 (not (= ~cleanupTimeShifts~0 4))) (.cse0 (not (= ~waterLevel~0 1))) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse11 (and .cse6 (not (= ~methaneLevelCritical~0 1)))) (.cse4 (not (= 1 ~systemActive~0))) (.cse12 (= ~pumpRunning~0 0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (or .cse1 .cse2 .cse3 .cse4 (not (= 2 ~waterLevel~0)) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (or .cse1 .cse11 .cse4 (not (<= 2 ~waterLevel~0)) (and .cse12 (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 1))) (or .cse0 .cse1 .cse11 .cse4 (and .cse12 (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 0)))))) [2022-11-19 08:07:55,127 INFO L895 garLoopResultBuilder]: At program point L534(lines 534 551) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1))) (not (= 1 ~systemActive~0)) (not (<= 1 ~waterLevel~0))) [2022-11-19 08:07:55,127 INFO L895 garLoopResultBuilder]: At program point L549(line 549) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1))) (not (= 1 ~systemActive~0)) (not (<= 1 ~waterLevel~0))) [2022-11-19 08:07:55,127 INFO L899 garLoopResultBuilder]: For program point L549-1(lines 530 554) no Hoare annotation was computed. [2022-11-19 08:07:55,127 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 780 791) no Hoare annotation was computed. [2022-11-19 08:07:55,127 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 780 791) the Hoare annotation is: (let ((.cse0 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (not (= ~pumpRunning~0 0)) .cse0 .cse1 (not (<= 1 |old(~waterLevel~0)|)) .cse2) (or .cse0 .cse1 (not (= ~pumpRunning~0 1)) .cse2 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-19 08:07:55,127 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__lowWaterSensorENTRY(lines 556 580) the Hoare annotation is: (let ((.cse0 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 1 ~waterLevel~0)))) (and (or .cse0 .cse1 .cse2 (not (= |old(~pumpRunning~0)| 1)) (= ~pumpRunning~0 1)) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 .cse1 .cse2))) [2022-11-19 08:07:55,128 INFO L895 garLoopResultBuilder]: At program point L570(line 570) the Hoare annotation is: (let ((.cse0 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 1 ~waterLevel~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= |old(~pumpRunning~0)| 1))))) [2022-11-19 08:07:55,128 INFO L895 garLoopResultBuilder]: At program point L566(line 566) the Hoare annotation is: (let ((.cse0 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 1 ~waterLevel~0)))) (and (or .cse0 .cse1 (and (<= 1 |processEnvironment__wrappee__lowWaterSensor_~tmp~5#1|) (= ~pumpRunning~0 1)) .cse2 (not (= |old(~pumpRunning~0)| 1))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1 .cse2))) [2022-11-19 08:07:55,128 INFO L899 garLoopResultBuilder]: For program point L564(lines 564 572) no Hoare annotation was computed. [2022-11-19 08:07:55,128 INFO L895 garLoopResultBuilder]: At program point L560(lines 560 577) the Hoare annotation is: (let ((.cse0 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 1 ~waterLevel~0)))) (and (or .cse0 .cse1 .cse2 (not (= |old(~pumpRunning~0)| 1)) (= ~pumpRunning~0 1)) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 .cse1 .cse2))) [2022-11-19 08:07:55,128 INFO L895 garLoopResultBuilder]: At program point L575(line 575) the Hoare annotation is: (let ((.cse0 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 1 ~waterLevel~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= |old(~pumpRunning~0)| 1))))) [2022-11-19 08:07:55,129 INFO L899 garLoopResultBuilder]: For program point L575-1(lines 556 580) no Hoare annotation was computed. [2022-11-19 08:07:55,129 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__lowWaterSensorEXIT(lines 556 580) no Hoare annotation was computed. [2022-11-19 08:07:55,132 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:55,134 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:07:55,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:07:55 BoogieIcfgContainer [2022-11-19 08:07:55,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:07:55,173 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:07:55,173 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:07:55,174 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:07:55,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:28" (3/4) ... [2022-11-19 08:07:55,177 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 08:07:55,182 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-19 08:07:55,183 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-19 08:07:55,183 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-19 08:07:55,183 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-19 08:07:55,183 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-19 08:07:55,183 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 08:07:55,184 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-19 08:07:55,184 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__lowWaterSensor [2022-11-19 08:07:55,190 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 51 nodes and edges [2022-11-19 08:07:55,191 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-19 08:07:55,191 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-19 08:07:55,192 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 08:07:55,192 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 08:07:55,218 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((((((((((((((((((((unknown-#length-unknown[15] == 25 && 9 == unknown-#length-unknown[5]) && unknown-#length-unknown[9] == 21) && 30 == unknown-#length-unknown[7]) && 1 == \valid[5]) && unknown-#length-unknown[3] == 12) && \valid[15] == 1) && pumpRunning == 0) && \valid[9] == 1) && unknown-#length-unknown[12] == 25) && \valid[11] == 1) && methaneLevelCritical == 0) && 30 == unknown-#length-unknown[4]) && 31 == unknown-#length-unknown[2]) && head == 0) && 2 == unknown-#length-unknown[1]) && unknown-#length-unknown[8] == 9) && \valid[3] == 1) && \valid[7] == 1) && 30 == unknown-#length-unknown[13]) && retValue_acc == 1) && 1 == systemActive) && 30 == unknown-#length-unknown[10]) && \valid[12] == 1) && tmp == \result) && \valid[4] == 1) && \valid[1] == 1) && unknown-#length-unknown[6] == 21) && \valid[14] == 1) && 9 == unknown-#length-unknown[14]) && \valid[0] == 0) && head == 0) && \valid[2] == 1) && #NULL == 0) && 9 == unknown-#length-unknown[11]) && waterLevel == 1) && unknown-#memory_int-unknown[1][0] == 48) && retValue_acc == \result) && \valid[6] == 1) && unknown-#memory_int-unknown[1][1] == 0) && \valid[10] == 1) && \valid[8] == 1) && \valid[13] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && cleanupTimeShifts == 4) && #NULL == 0 [2022-11-19 08:07:55,219 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1)) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) [2022-11-19 08:07:55,219 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == methaneLevelCritical) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || !(2 <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) || ((((((methaneLevelCritical == 0 || methaneLevelCritical == 1) && 2 <= waterLevel) && 1 == systemActive) && \old(pumpRunning) == 0) && \old(waterLevel) == waterLevel) && pumpRunning == 1))) && ((((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || ((((((methaneLevelCritical == 0 || methaneLevelCritical == 1) && 2 <= waterLevel) && 1 == systemActive) && \old(pumpRunning) == 0) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(2 <= \old(waterLevel))) [2022-11-19 08:07:55,220 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1)) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || (\old(waterLevel) == waterLevel + 1 && pumpRunning == 1)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) [2022-11-19 08:07:55,220 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == methaneLevelCritical) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || !(2 <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) || ((((((methaneLevelCritical == 0 || methaneLevelCritical == 1) && 2 <= waterLevel) && 1 == systemActive) && \old(pumpRunning) == 0) && \old(waterLevel) == waterLevel) && pumpRunning == 1))) && ((((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || ((((((methaneLevelCritical == 0 || methaneLevelCritical == 1) && 2 <= waterLevel) && 1 == systemActive) && \old(pumpRunning) == 0) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(2 <= \old(waterLevel))) [2022-11-19 08:07:55,221 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1)) || !(1 == systemActive)) || !(1 <= waterLevel)) || !(\old(pumpRunning) == 1)) || pumpRunning == 1) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= waterLevel)) [2022-11-19 08:07:55,221 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= waterLevel) [2022-11-19 08:07:55,222 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) || ((((((((methaneLevelCritical == 0 || methaneLevelCritical == 1) && !(\old(waterLevel) == 1)) && 1 == systemActive) && \old(pumpRunning) == 0) && tmp == waterLevel) && 1 <= tmp) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || ((pumpRunning == 0 && tmp == waterLevel) && \old(waterLevel) == waterLevel)) && (((((!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1)) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || (((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == methaneLevelCritical) && tmp == waterLevel)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || ((((((((methaneLevelCritical == 0 || methaneLevelCritical == 1) && !(\old(waterLevel) == 1)) && 1 == systemActive) && \old(pumpRunning) == 0) && tmp == waterLevel) && 1 <= tmp) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && ((((((((((!(\old(pumpRunning) == 0) || !(#NULL == 0)) || !(1 == systemActive)) || (tmp == \result && retValue_acc == \result)) || !(head == 0)) || !(methaneLevelCritical == 0)) || !(#NULL == 0)) || !(\old(waterLevel) == 2)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(head == 0)) || !(cleanupTimeShifts == 4)) [2022-11-19 08:07:55,222 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == waterLevel) && waterLevel == 1)) && (((((!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1)) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || (((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == methaneLevelCritical) && tmp == waterLevel)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || ((tmp == waterLevel && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && ((((((((((!(\old(pumpRunning) == 0) || !(#NULL == 0)) || !(1 == systemActive)) || (tmp == \result && retValue_acc == \result)) || !(head == 0)) || !(methaneLevelCritical == 0)) || !(#NULL == 0)) || !(\old(waterLevel) == 2)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(head == 0)) || !(cleanupTimeShifts == 4)) [2022-11-19 08:07:55,223 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) && ((((!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1)) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(2 <= \old(waterLevel))) [2022-11-19 08:07:55,224 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(#NULL == 0)) || (((((((1 == retValue_acc && \result == retValue_acc) && waterLevel < 2) || ((!(waterLevel < 2) && \result == retValue_acc) && 0 == retValue_acc)) && retValue_acc == tmp___0) && \result == tmp) && retValue_acc == \result) && tmp == \result)) || !(1 == systemActive)) || !(head == 0)) || !(methaneLevelCritical == 0)) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(head == 0)) || !(cleanupTimeShifts == 4)) && ((((((((((!(\old(pumpRunning) == 0) || !(#NULL == 0)) || (((((((1 == retValue_acc && \result == retValue_acc) && waterLevel < 2) || ((!(waterLevel < 2) && \result == retValue_acc) && 0 == retValue_acc)) && retValue_acc == tmp___0) && \result == tmp) && retValue_acc == \result) && tmp == \result)) || !(1 == systemActive)) || !(2 == waterLevel)) || !(head == 0)) || !(methaneLevelCritical == 0)) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(head == 0)) || !(cleanupTimeShifts == 4))) && ((((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(2 <= waterLevel)) || (pumpRunning == 0 && tmp == 1))) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 0)) [2022-11-19 08:07:55,264 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:07:55,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:07:55,265 INFO L158 Benchmark]: Toolchain (without parser) took 88368.06ms. Allocated memory was 134.2MB in the beginning and 551.6MB in the end (delta: 417.3MB). Free memory was 105.8MB in the beginning and 396.0MB in the end (delta: -290.2MB). Peak memory consumption was 126.8MB. Max. memory is 16.1GB. [2022-11-19 08:07:55,265 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 92.3MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:07:55,266 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.05ms. Allocated memory is still 134.2MB. Free memory was 105.4MB in the beginning and 103.1MB in the end (delta: 2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 08:07:55,267 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.27ms. Allocated memory is still 134.2MB. Free memory was 103.1MB in the beginning and 100.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:07:55,267 INFO L158 Benchmark]: Boogie Preprocessor took 41.40ms. Allocated memory is still 134.2MB. Free memory was 100.7MB in the beginning and 99.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:07:55,268 INFO L158 Benchmark]: RCFGBuilder took 735.03ms. Allocated memory is still 134.2MB. Free memory was 99.0MB in the beginning and 110.3MB in the end (delta: -11.4MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2022-11-19 08:07:55,268 INFO L158 Benchmark]: TraceAbstraction took 86896.07ms. Allocated memory was 134.2MB in the beginning and 551.6MB in the end (delta: 417.3MB). Free memory was 109.7MB in the beginning and 402.3MB in the end (delta: -292.5MB). Peak memory consumption was 335.0MB. Max. memory is 16.1GB. [2022-11-19 08:07:55,269 INFO L158 Benchmark]: Witness Printer took 90.87ms. Allocated memory is still 551.6MB. Free memory was 402.3MB in the beginning and 396.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 08:07:55,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 92.3MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.05ms. Allocated memory is still 134.2MB. Free memory was 105.4MB in the beginning and 103.1MB in the end (delta: 2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.27ms. Allocated memory is still 134.2MB. Free memory was 103.1MB in the beginning and 100.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.40ms. Allocated memory is still 134.2MB. Free memory was 100.7MB in the beginning and 99.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 735.03ms. Allocated memory is still 134.2MB. Free memory was 99.0MB in the beginning and 110.3MB in the end (delta: -11.4MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * TraceAbstraction took 86896.07ms. Allocated memory was 134.2MB in the beginning and 551.6MB in the end (delta: 417.3MB). Free memory was 109.7MB in the beginning and 402.3MB in the end (delta: -292.5MB). Peak memory consumption was 335.0MB. Max. memory is 16.1GB. * Witness Printer took 90.87ms. Allocated memory is still 551.6MB. Free memory was 402.3MB in the beginning and 396.0MB 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: 760]: 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 9 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 86.7s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 20.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 16.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3298 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3261 mSDsluCounter, 3827 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2986 mSDsCounter, 1996 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7717 IncrementalHoareTripleChecker+Invalid, 9713 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1996 mSolverCounterUnsat, 841 mSDtfsCounter, 7717 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1468 GetRequests, 1004 SyntacticMatches, 27 SemanticMatches, 437 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12593 ImplicationChecksByTransitivity, 37.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=747occurred in iteration=11, InterpolantAutomatonStates: 239, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 492 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 2184 PreInvPairs, 2589 NumberOfFragments, 2229 HoareAnnotationTreeSize, 2184 FomulaSimplifications, 45441 FormulaSimplificationTreeSizeReduction, 3.8s HoareSimplificationTime, 38 FomulaSimplificationsInter, 130265 FormulaSimplificationTreeSizeReductionInter, 12.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 1178 NumberOfCodeBlocks, 1076 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1526 ConstructedInterpolants, 0 QuantifiedInterpolants, 5665 SizeOfPredicates, 66 NumberOfNonLiveVariables, 1750 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 25 InterpolantComputations, 10 PerfectInterpolantSequences, 681/933 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: OVERALL_TIME: 2.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 46, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 62, TOOLS_POST_TIME: 0.6s, TOOLS_POST_CALL_APPLICATIONS: 26, TOOLS_POST_CALL_TIME: 1.0s, TOOLS_POST_RETURN_APPLICATIONS: 22, TOOLS_POST_RETURN_TIME: 0.8s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 110, TOOLS_QUANTIFIERELIM_TIME: 2.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 140, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 20, DOMAIN_JOIN_TIME: 0.3s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 46, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 2.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 22, CALL_SUMMARIZER_CACHE_MISSES: 5, CALL_SUMMARIZER_OVERALL_TIME: 0.2s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 478, DAG_COMPRESSION_RETAINED_NODES: 123, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 977]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((unknown-#length-unknown[15] == 25 && 9 == unknown-#length-unknown[5]) && unknown-#length-unknown[9] == 21) && 30 == unknown-#length-unknown[7]) && 1 == \valid[5]) && unknown-#length-unknown[3] == 12) && \valid[15] == 1) && pumpRunning == 0) && \valid[9] == 1) && unknown-#length-unknown[12] == 25) && \valid[11] == 1) && methaneLevelCritical == 0) && 30 == unknown-#length-unknown[4]) && 31 == unknown-#length-unknown[2]) && head == 0) && 2 == unknown-#length-unknown[1]) && unknown-#length-unknown[8] == 9) && \valid[3] == 1) && \valid[7] == 1) && 30 == unknown-#length-unknown[13]) && retValue_acc == 1) && 1 == systemActive) && 30 == unknown-#length-unknown[10]) && \valid[12] == 1) && tmp == \result) && \valid[4] == 1) && \valid[1] == 1) && unknown-#length-unknown[6] == 21) && \valid[14] == 1) && 9 == unknown-#length-unknown[14]) && \valid[0] == 0) && head == 0) && \valid[2] == 1) && #NULL == 0) && 9 == unknown-#length-unknown[11]) && waterLevel == 1) && unknown-#memory_int-unknown[1][0] == 48) && retValue_acc == \result) && \valid[6] == 1) && unknown-#memory_int-unknown[1][1] == 0) && \valid[10] == 1) && \valid[8] == 1) && \valid[13] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && cleanupTimeShifts == 4) && #NULL == 0 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 977]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 538]: Loop Invariant Derived loop invariant: ((((((((((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(#NULL == 0)) || (((((((1 == retValue_acc && \result == retValue_acc) && waterLevel < 2) || ((!(waterLevel < 2) && \result == retValue_acc) && 0 == retValue_acc)) && retValue_acc == tmp___0) && \result == tmp) && retValue_acc == \result) && tmp == \result)) || !(1 == systemActive)) || !(head == 0)) || !(methaneLevelCritical == 0)) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(head == 0)) || !(cleanupTimeShifts == 4)) && ((((((((((!(\old(pumpRunning) == 0) || !(#NULL == 0)) || (((((((1 == retValue_acc && \result == retValue_acc) && waterLevel < 2) || ((!(waterLevel < 2) && \result == retValue_acc) && 0 == retValue_acc)) && retValue_acc == tmp___0) && \result == tmp) && retValue_acc == \result) && tmp == \result)) || !(1 == systemActive)) || !(2 == waterLevel)) || !(head == 0)) || !(methaneLevelCritical == 0)) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(head == 0)) || !(cleanupTimeShifts == 4))) && ((((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(2 <= waterLevel)) || (pumpRunning == 0 && tmp == 1))) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 0)) - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: (((((((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == methaneLevelCritical) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || !(2 <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) || ((((((methaneLevelCritical == 0 || methaneLevelCritical == 1) && 2 <= waterLevel) && 1 == systemActive) && \old(pumpRunning) == 0) && \old(waterLevel) == waterLevel) && pumpRunning == 1))) && ((((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || ((((((methaneLevelCritical == 0 || methaneLevelCritical == 1) && 2 <= waterLevel) && 1 == systemActive) && \old(pumpRunning) == 0) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 560]: Loop Invariant Derived loop invariant: (((((!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1)) || !(1 == systemActive)) || !(1 <= waterLevel)) || !(\old(pumpRunning) == 1)) || pumpRunning == 1) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= waterLevel)) - InvariantResult [Line: 760]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) && ((((!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1)) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 906]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 896]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 586]: Loop Invariant Derived loop invariant: (((((!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1)) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || (\old(waterLevel) == waterLevel + 1 && pumpRunning == 1)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) - InvariantResult [Line: 869]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == waterLevel) && waterLevel == 1)) && (((((!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1)) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || (((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == methaneLevelCritical) && tmp == waterLevel)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || ((tmp == waterLevel && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && ((((((((((!(\old(pumpRunning) == 0) || !(#NULL == 0)) || !(1 == systemActive)) || (tmp == \result && retValue_acc == \result)) || !(head == 0)) || !(methaneLevelCritical == 0)) || !(#NULL == 0)) || !(\old(waterLevel) == 2)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(head == 0)) || !(cleanupTimeShifts == 4)) - InvariantResult [Line: 498]: Loop Invariant Derived loop invariant: (((((!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1)) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) - InvariantResult [Line: 430]: Loop Invariant Derived loop invariant: (((((methaneLevelCritical == 0 || methaneLevelCritical == 1) && 2 <= waterLevel) && 1 == systemActive) && splverifierCounter == 0) && pumpRunning == 1) || ((((pumpRunning == 0 && (methaneLevelCritical == 0 || methaneLevelCritical == 1)) && 1 == systemActive) && splverifierCounter == 0) && 1 <= waterLevel) - InvariantResult [Line: 429]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 877]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) || ((((((((methaneLevelCritical == 0 || methaneLevelCritical == 1) && !(\old(waterLevel) == 1)) && 1 == systemActive) && \old(pumpRunning) == 0) && tmp == waterLevel) && 1 <= tmp) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || ((pumpRunning == 0 && tmp == waterLevel) && \old(waterLevel) == waterLevel)) && (((((!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1)) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || (((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == methaneLevelCritical) && tmp == waterLevel)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || ((((((((methaneLevelCritical == 0 || methaneLevelCritical == 1) && !(\old(waterLevel) == 1)) && 1 == systemActive) && \old(pumpRunning) == 0) && tmp == waterLevel) && 1 <= tmp) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && ((((((((((!(\old(pumpRunning) == 0) || !(#NULL == 0)) || !(1 == systemActive)) || (tmp == \result && retValue_acc == \result)) || !(head == 0)) || !(methaneLevelCritical == 0)) || !(#NULL == 0)) || !(\old(waterLevel) == 2)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(head == 0)) || !(cleanupTimeShifts == 4)) - InvariantResult [Line: 534]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= waterLevel) - InvariantResult [Line: 509]: Loop Invariant Derived loop invariant: (((((((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == methaneLevelCritical) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || !(2 <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) || ((((((methaneLevelCritical == 0 || methaneLevelCritical == 1) && 2 <= waterLevel) && 1 == systemActive) && \old(pumpRunning) == 0) && \old(waterLevel) == waterLevel) && pumpRunning == 1))) && ((((!(\old(pumpRunning) == 0) || (!(methaneLevelCritical == 0) && !(methaneLevelCritical == 1))) || !(1 == systemActive)) || ((((((methaneLevelCritical == 0 || methaneLevelCritical == 1) && 2 <= waterLevel) && 1 == systemActive) && \old(pumpRunning) == 0) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 420]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-19 08:07:55,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ea5279-2b38-4170-856d-071e4035280c/bin/utaipan-I9t0OCRTmS/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