./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product58.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product58.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW --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 debcf50bf3bb3961401c62ca4b7217ea7cc93038f750143121614e56b550164d --- 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-4e7fbc6 [2022-11-23 15:12:37,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:12:37,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:12:37,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:12:37,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:12:37,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:12:37,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:12:37,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:12:37,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:12:37,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:12:37,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:12:37,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:12:37,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:12:37,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:12:37,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:12:37,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:12:37,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:12:37,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:12:37,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:12:37,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:12:37,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:12:37,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:12:37,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:12:37,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:12:37,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:12:37,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:12:37,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:12:37,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:12:37,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:12:37,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:12:37,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:12:37,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:12:37,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:12:37,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:12:37,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:12:37,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:12:37,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:12:37,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:12:37,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:12:37,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:12:37,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:12:37,623 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:12:37,662 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:12:37,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:12:37,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:12:37,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:12:37,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:12:37,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:12:37,683 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:12:37,683 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:12:37,683 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:12:37,683 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:12:37,685 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:12:37,685 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:12:37,685 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:12:37,685 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:12:37,686 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:12:37,686 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:12:37,686 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:12:37,687 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:12:37,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:12:37,688 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:12:37,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:12:37,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:12:37,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:12:37,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:12:37,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:12:37,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:12:37,689 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:12:37,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:12:37,690 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:12:37,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:12:37,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:12:37,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:12:37,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:12:37,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:12:37,692 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:12:37,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:12:37,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:12:37,693 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:12:37,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:12:37,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:12:37,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:12:37,694 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_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debcf50bf3bb3961401c62ca4b7217ea7cc93038f750143121614e56b550164d [2022-11-23 15:12:38,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:12:38,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:12:38,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:12:38,086 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:12:38,086 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:12:38,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/minepump_spec4_product58.cil.c [2022-11-23 15:12:41,068 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:12:41,332 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:12:41,332 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/sv-benchmarks/c/product-lines/minepump_spec4_product58.cil.c [2022-11-23 15:12:41,347 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/data/3b06c683c/b5ef32f1d6524f5daa15cd3974b97a4e/FLAGd8d0e8db7 [2022-11-23 15:12:41,372 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/data/3b06c683c/b5ef32f1d6524f5daa15cd3974b97a4e [2022-11-23 15:12:41,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:12:41,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:12:41,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:12:41,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:12:41,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:12:41,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:12:41" (1/1) ... [2022-11-23 15:12:41,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bec8e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41, skipping insertion in model container [2022-11-23 15:12:41,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:12:41" (1/1) ... [2022-11-23 15:12:41,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:12:41,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:12:41,638 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/sv-benchmarks/c/product-lines/minepump_spec4_product58.cil.c[11718,11731] [2022-11-23 15:12:41,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:12:41,710 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:12:41,786 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/sv-benchmarks/c/product-lines/minepump_spec4_product58.cil.c[11718,11731] [2022-11-23 15:12:41,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:12:41,846 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:12:41,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41 WrapperNode [2022-11-23 15:12:41,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:12:41,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:12:41,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:12:41,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:12:41,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41" (1/1) ... [2022-11-23 15:12:41,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41" (1/1) ... [2022-11-23 15:12:41,901 INFO L138 Inliner]: procedures = 57, calls = 101, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 227 [2022-11-23 15:12:41,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:12:41,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:12:41,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:12:41,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:12:41,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41" (1/1) ... [2022-11-23 15:12:41,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41" (1/1) ... [2022-11-23 15:12:41,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41" (1/1) ... [2022-11-23 15:12:41,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41" (1/1) ... [2022-11-23 15:12:41,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41" (1/1) ... [2022-11-23 15:12:41,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41" (1/1) ... [2022-11-23 15:12:41,932 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41" (1/1) ... [2022-11-23 15:12:41,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41" (1/1) ... [2022-11-23 15:12:41,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:12:41,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:12:41,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:12:41,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:12:41,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41" (1/1) ... [2022-11-23 15:12:41,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:12:41,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:12:41,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:12:41,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:12:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:12:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-23 15:12:42,036 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-23 15:12:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 15:12:42,037 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 15:12:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 15:12:42,037 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 15:12:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:12:42,038 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:12:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-23 15:12:42,038 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-23 15:12:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:12:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-23 15:12:42,039 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-23 15:12:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:12:42,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:12:42,139 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:12:42,141 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:12:42,479 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:12:42,588 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:12:42,589 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:12:42,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:12:42 BoogieIcfgContainer [2022-11-23 15:12:42,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:12:42,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:12:42,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:12:42,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:12:42,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:12:41" (1/3) ... [2022-11-23 15:12:42,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31195340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:12:42, skipping insertion in model container [2022-11-23 15:12:42,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:41" (2/3) ... [2022-11-23 15:12:42,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31195340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:12:42, skipping insertion in model container [2022-11-23 15:12:42,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:12:42" (3/3) ... [2022-11-23 15:12:42,600 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c [2022-11-23 15:12:42,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:12:42,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:12:42,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:12:42,759 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;@4d2ccd5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:12:42,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:12:42,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 41 states have internal predecessors, (48), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 15:12:42,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 15:12:42,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:42,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:42,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:42,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:42,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1497506587, now seen corresponding path program 1 times [2022-11-23 15:12:42,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:42,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022189104] [2022-11-23 15:12:42,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:42,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:12:42,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:42,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022189104] [2022-11-23 15:12:42,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022189104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:42,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:42,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:12:42,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788431376] [2022-11-23 15:12:42,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:42,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:12:42,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:43,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:12:43,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:12:43,004 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 41 states have internal predecessors, (48), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) 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) [2022-11-23 15:12:43,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:43,141 INFO L93 Difference]: Finished difference Result 100 states and 137 transitions. [2022-11-23 15:12:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:12:43,144 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 [2022-11-23 15:12:43,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:43,154 INFO L225 Difference]: With dead ends: 100 [2022-11-23 15:12:43,154 INFO L226 Difference]: Without dead ends: 46 [2022-11-23 15:12:43,158 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 [2022-11-23 15:12:43,162 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:43,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:12:43,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-23 15:12:43,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-23 15:12:43,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-23 15:12:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2022-11-23 15:12:43,202 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 12 [2022-11-23 15:12:43,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:43,202 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2022-11-23 15:12:43,203 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) [2022-11-23 15:12:43,203 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2022-11-23 15:12:43,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:12:43,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:43,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:43,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:12:43,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:43,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash -903472037, now seen corresponding path program 1 times [2022-11-23 15:12:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:43,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745043230] [2022-11-23 15:12:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:43,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:12:43,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:43,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745043230] [2022-11-23 15:12:43,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745043230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:43,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:43,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:12:43,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071039392] [2022-11-23 15:12:43,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:43,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:12:43,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:43,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:12:43,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:12:43,345 INFO L87 Difference]: Start difference. First operand 46 states and 59 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) [2022-11-23 15:12:43,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:43,424 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-11-23 15:12:43,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:12:43,426 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 [2022-11-23 15:12:43,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:43,427 INFO L225 Difference]: With dead ends: 69 [2022-11-23 15:12:43,428 INFO L226 Difference]: Without dead ends: 38 [2022-11-23 15:12:43,428 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 [2022-11-23 15:12:43,430 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:43,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 59 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:12:43,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-23 15:12:43,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-23 15:12:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.36) internal successors, (34), 32 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 15:12:43,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2022-11-23 15:12:43,443 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 13 [2022-11-23 15:12:43,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:43,443 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2022-11-23 15:12:43,444 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) [2022-11-23 15:12:43,444 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2022-11-23 15:12:43,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 15:12:43,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:43,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:43,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:12:43,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:43,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:43,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1673097531, now seen corresponding path program 1 times [2022-11-23 15:12:43,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:43,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619832741] [2022-11-23 15:12:43,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:43,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:12:43,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:43,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619832741] [2022-11-23 15:12:43,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619832741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:43,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:43,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:12:43,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113017951] [2022-11-23 15:12:43,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:43,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:12:43,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:12:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:12:43,668 INFO L87 Difference]: Start difference. First operand 38 states and 48 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) [2022-11-23 15:12:43,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:43,703 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2022-11-23 15:12:43,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:12:43,704 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 [2022-11-23 15:12:43,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:43,705 INFO L225 Difference]: With dead ends: 74 [2022-11-23 15:12:43,705 INFO L226 Difference]: Without dead ends: 38 [2022-11-23 15:12:43,706 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 [2022-11-23 15:12:43,707 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:43,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 32 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:12:43,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-23 15:12:43,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-23 15:12:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.32) internal successors, (33), 32 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 15:12:43,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-11-23 15:12:43,717 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 15 [2022-11-23 15:12:43,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:43,717 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-11-23 15:12:43,718 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) [2022-11-23 15:12:43,718 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-11-23 15:12:43,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 15:12:43,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:43,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:43,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:12:43,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:43,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:43,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1105785491, now seen corresponding path program 1 times [2022-11-23 15:12:43,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:43,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339830305] [2022-11-23 15:12:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:43,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:12:44,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:44,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339830305] [2022-11-23 15:12:44,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339830305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:44,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:44,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:12:44,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740531511] [2022-11-23 15:12:44,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:44,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:12:44,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:44,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:12:44,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:12:44,203 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-23 15:12:44,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:44,575 INFO L93 Difference]: Finished difference Result 170 states and 218 transitions. [2022-11-23 15:12:44,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:12:44,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 18 [2022-11-23 15:12:44,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:44,581 INFO L225 Difference]: With dead ends: 170 [2022-11-23 15:12:44,582 INFO L226 Difference]: Without dead ends: 134 [2022-11-23 15:12:44,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:12:44,584 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 102 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:44,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 136 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:12:44,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-23 15:12:44,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 111. [2022-11-23 15:12:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 77 states have (on average 1.2987012987012987) internal successors, (100), 88 states have internal predecessors, (100), 16 states have call successors, (16), 14 states have call predecessors, (16), 17 states have return successors, (24), 16 states have call predecessors, (24), 16 states have call successors, (24) [2022-11-23 15:12:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 140 transitions. [2022-11-23 15:12:44,648 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 140 transitions. Word has length 18 [2022-11-23 15:12:44,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:44,648 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 140 transitions. [2022-11-23 15:12:44,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-23 15:12:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 140 transitions. [2022-11-23 15:12:44,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 15:12:44,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:44,650 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] [2022-11-23 15:12:44,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:12:44,651 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:44,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:44,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1419149477, now seen corresponding path program 1 times [2022-11-23 15:12:44,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:44,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970231316] [2022-11-23 15:12:44,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:44,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:12:44,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:44,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970231316] [2022-11-23 15:12:44,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970231316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:44,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:44,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:12:44,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817606467] [2022-11-23 15:12:44,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:44,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:12:44,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:44,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:12:44,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:12:44,805 INFO L87 Difference]: Start difference. First operand 111 states and 140 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 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) [2022-11-23 15:12:44,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:44,988 INFO L93 Difference]: Finished difference Result 319 states and 429 transitions. [2022-11-23 15:12:44,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:12:44,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 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 23 [2022-11-23 15:12:44,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:44,996 INFO L225 Difference]: With dead ends: 319 [2022-11-23 15:12:44,996 INFO L226 Difference]: Without dead ends: 210 [2022-11-23 15:12:45,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:12:45,007 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 66 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:45,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 168 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:12:45,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-23 15:12:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 180. [2022-11-23 15:12:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 127 states have (on average 1.2519685039370079) internal successors, (159), 139 states have internal predecessors, (159), 23 states have call successors, (23), 22 states have call predecessors, (23), 29 states have return successors, (45), 27 states have call predecessors, (45), 23 states have call successors, (45) [2022-11-23 15:12:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 227 transitions. [2022-11-23 15:12:45,082 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 227 transitions. Word has length 23 [2022-11-23 15:12:45,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:45,083 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 227 transitions. [2022-11-23 15:12:45,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 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) [2022-11-23 15:12:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 227 transitions. [2022-11-23 15:12:45,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 15:12:45,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:45,090 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] [2022-11-23 15:12:45,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:12:45,090 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:45,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:45,091 INFO L85 PathProgramCache]: Analyzing trace with hash 355769214, now seen corresponding path program 1 times [2022-11-23 15:12:45,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:45,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032330473] [2022-11-23 15:12:45,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:45,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:12:45,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:45,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032330473] [2022-11-23 15:12:45,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032330473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:45,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:45,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:12:45,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136401243] [2022-11-23 15:12:45,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:45,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:12:45,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:45,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:12:45,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:12:45,354 INFO L87 Difference]: Start difference. First operand 180 states and 227 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:12:45,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:45,803 INFO L93 Difference]: Finished difference Result 521 states and 693 transitions. [2022-11-23 15:12:45,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 15:12:45,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-23 15:12:45,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:45,811 INFO L225 Difference]: With dead ends: 521 [2022-11-23 15:12:45,812 INFO L226 Difference]: Without dead ends: 380 [2022-11-23 15:12:45,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:12:45,819 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 155 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:45,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 161 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:12:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-23 15:12:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 366. [2022-11-23 15:12:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 258 states have (on average 1.248062015503876) internal successors, (322), 282 states have internal predecessors, (322), 48 states have call successors, (48), 45 states have call predecessors, (48), 59 states have return successors, (112), 55 states have call predecessors, (112), 48 states have call successors, (112) [2022-11-23 15:12:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 482 transitions. [2022-11-23 15:12:45,922 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 482 transitions. Word has length 26 [2022-11-23 15:12:45,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:45,923 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 482 transitions. [2022-11-23 15:12:45,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:12:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 482 transitions. [2022-11-23 15:12:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 15:12:45,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:45,927 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] [2022-11-23 15:12:45,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:12:45,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash -874326473, now seen corresponding path program 1 times [2022-11-23 15:12:45,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:45,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290699136] [2022-11-23 15:12:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:45,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:12:46,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:46,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290699136] [2022-11-23 15:12:46,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290699136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:46,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:46,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 15:12:46,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272507808] [2022-11-23 15:12:46,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:46,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:12:46,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:46,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:12:46,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:12:46,227 INFO L87 Difference]: Start difference. First operand 366 states and 482 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2022-11-23 15:12:46,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:46,786 INFO L93 Difference]: Finished difference Result 945 states and 1316 transitions. [2022-11-23 15:12:46,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 15:12:46,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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 29 [2022-11-23 15:12:46,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:46,793 INFO L225 Difference]: With dead ends: 945 [2022-11-23 15:12:46,794 INFO L226 Difference]: Without dead ends: 681 [2022-11-23 15:12:46,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:12:46,796 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 132 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:46,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 196 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:12:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-23 15:12:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 558. [2022-11-23 15:12:46,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 395 states have (on average 1.220253164556962) internal successors, (482), 425 states have internal predecessors, (482), 69 states have call successors, (69), 65 states have call predecessors, (69), 93 states have return successors, (169), 88 states have call predecessors, (169), 69 states have call successors, (169) [2022-11-23 15:12:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 720 transitions. [2022-11-23 15:12:46,937 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 720 transitions. Word has length 29 [2022-11-23 15:12:46,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:46,937 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 720 transitions. [2022-11-23 15:12:46,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2022-11-23 15:12:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 720 transitions. [2022-11-23 15:12:46,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-23 15:12:46,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:46,943 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] [2022-11-23 15:12:46,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:12:46,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:46,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:46,945 INFO L85 PathProgramCache]: Analyzing trace with hash -904725257, now seen corresponding path program 1 times [2022-11-23 15:12:46,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:46,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725895591] [2022-11-23 15:12:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:46,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:12:47,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:47,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725895591] [2022-11-23 15:12:47,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725895591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:47,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:47,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 15:12:47,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458527404] [2022-11-23 15:12:47,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:47,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:12:47,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:47,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:12:47,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:12:47,227 INFO L87 Difference]: Start difference. First operand 558 states and 720 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 15:12:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:47,527 INFO L93 Difference]: Finished difference Result 1073 states and 1407 transitions. [2022-11-23 15:12:47,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 15:12:47,530 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-23 15:12:47,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:47,536 INFO L225 Difference]: With dead ends: 1073 [2022-11-23 15:12:47,536 INFO L226 Difference]: Without dead ends: 577 [2022-11-23 15:12:47,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:12:47,539 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 159 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:47,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 89 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:12:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-11-23 15:12:47,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 517. [2022-11-23 15:12:47,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 368 states have (on average 1.2173913043478262) internal successors, (448), 394 states have internal predecessors, (448), 62 states have call successors, (62), 58 states have call predecessors, (62), 86 states have return successors, (154), 81 states have call predecessors, (154), 62 states have call successors, (154) [2022-11-23 15:12:47,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 664 transitions. [2022-11-23 15:12:47,658 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 664 transitions. Word has length 42 [2022-11-23 15:12:47,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:47,658 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 664 transitions. [2022-11-23 15:12:47,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 15:12:47,659 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 664 transitions. [2022-11-23 15:12:47,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-23 15:12:47,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:47,661 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] [2022-11-23 15:12:47,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:12:47,661 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:47,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:47,662 INFO L85 PathProgramCache]: Analyzing trace with hash 317890339, now seen corresponding path program 2 times [2022-11-23 15:12:47,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:47,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180801255] [2022-11-23 15:12:47,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:47,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:12:48,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:48,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180801255] [2022-11-23 15:12:48,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180801255] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:12:48,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617272372] [2022-11-23 15:12:48,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:12:48,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:12:48,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:12:48,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:12:48,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:12:48,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 15:12:48,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:12:48,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:12:48,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:12:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:12:48,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:12:48,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617272372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:48,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:12:48,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-11-23 15:12:48,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126928474] [2022-11-23 15:12:48,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:48,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:12:48,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:48,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:12:48,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-23 15:12:48,216 INFO L87 Difference]: Start difference. First operand 517 states and 664 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 15:12:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:48,364 INFO L93 Difference]: Finished difference Result 954 states and 1273 transitions. [2022-11-23 15:12:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:12:48,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-23 15:12:48,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:48,368 INFO L225 Difference]: With dead ends: 954 [2022-11-23 15:12:48,368 INFO L226 Difference]: Without dead ends: 485 [2022-11-23 15:12:48,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-23 15:12:48,370 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 38 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:48,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 105 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:12:48,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-11-23 15:12:48,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 437. [2022-11-23 15:12:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 308 states have (on average 1.1915584415584415) internal successors, (367), 332 states have internal predecessors, (367), 57 states have call successors, (57), 55 states have call predecessors, (57), 71 states have return successors, (115), 67 states have call predecessors, (115), 57 states have call successors, (115) [2022-11-23 15:12:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 539 transitions. [2022-11-23 15:12:48,447 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 539 transitions. Word has length 42 [2022-11-23 15:12:48,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:48,447 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 539 transitions. [2022-11-23 15:12:48,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 15:12:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 539 transitions. [2022-11-23 15:12:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-23 15:12:48,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:48,449 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:12:48,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:12:48,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:12:48,655 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:48,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:48,656 INFO L85 PathProgramCache]: Analyzing trace with hash -940303233, now seen corresponding path program 1 times [2022-11-23 15:12:48,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:48,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214903071] [2022-11-23 15:12:48,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:48,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:12:49,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:49,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214903071] [2022-11-23 15:12:49,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214903071] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:12:49,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532895001] [2022-11-23 15:12:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:49,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:12:49,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:12:49,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:12:49,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:12:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:49,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 15:12:49,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:12:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 15:12:49,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:12:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 15:12:49,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532895001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:12:49,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2034752021] [2022-11-23 15:12:49,796 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-23 15:12:49,797 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:12:49,800 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:12:49,806 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:12:49,806 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:12:56,168 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 139 for LOIs [2022-11-23 15:12:56,193 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 52 for LOIs [2022-11-23 15:12:56,386 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 24 for LOIs [2022-11-23 15:12:56,536 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 25 for LOIs [2022-11-23 15:12:56,538 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:13:01,519 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11161#(and (= |timeShift_getWaterLevel_~retValue_acc~4#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~4#1| ~waterLevel~0) (<= ~pumpRunning~0 1) (= ~methaneLevelCritical~0 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~11#1|) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~11#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~3#1| |timeShift_getWaterLevel_#res#1|) (= |old(~waterLevel~0)| ~waterLevel~0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~3#1| 0) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:13:01,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:13:01,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:13:01,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 25 [2022-11-23 15:13:01,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910322868] [2022-11-23 15:13:01,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:13:01,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 15:13:01,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:01,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 15:13:01,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1985, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 15:13:01,523 INFO L87 Difference]: Start difference. First operand 437 states and 539 transitions. Second operand has 25 states, 22 states have (on average 4.0) internal successors, (88), 24 states have internal predecessors, (88), 12 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-23 15:13:07,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:07,092 INFO L93 Difference]: Finished difference Result 1867 states and 2669 transitions. [2022-11-23 15:13:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-11-23 15:13:07,093 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.0) internal successors, (88), 24 states have internal predecessors, (88), 12 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) Word has length 50 [2022-11-23 15:13:07,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:07,102 INFO L225 Difference]: With dead ends: 1867 [2022-11-23 15:13:07,102 INFO L226 Difference]: Without dead ends: 1462 [2022-11-23 15:13:07,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5980 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2152, Invalid=14104, Unknown=0, NotChecked=0, Total=16256 [2022-11-23 15:13:07,109 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 1093 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 2932 mSolverCounterSat, 1038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 3970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 2932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:07,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 1072 Invalid, 3970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1038 Valid, 2932 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 15:13:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-23 15:13:07,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 894. [2022-11-23 15:13:07,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 631 states have (on average 1.196513470681458) internal successors, (755), 696 states have internal predecessors, (755), 126 states have call successors, (126), 106 states have call predecessors, (126), 136 states have return successors, (257), 139 states have call predecessors, (257), 126 states have call successors, (257) [2022-11-23 15:13:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1138 transitions. [2022-11-23 15:13:07,304 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1138 transitions. Word has length 50 [2022-11-23 15:13:07,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:07,307 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1138 transitions. [2022-11-23 15:13:07,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.0) internal successors, (88), 24 states have internal predecessors, (88), 12 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-23 15:13:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1138 transitions. [2022-11-23 15:13:07,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 15:13:07,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:07,310 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 15:13:07,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:13:07,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 15:13:07,518 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:13:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1352416078, now seen corresponding path program 1 times [2022-11-23 15:13:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:07,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437550940] [2022-11-23 15:13:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:13:08,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:08,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437550940] [2022-11-23 15:13:08,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437550940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:13:08,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477264943] [2022-11-23 15:13:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:08,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:13:08,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:13:08,107 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:13:08,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:13:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:08,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 15:13:08,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:13:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:13:08,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:13:08,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477264943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:08,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:13:08,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-23 15:13:08,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837065919] [2022-11-23 15:13:08,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:08,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:13:08,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:08,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:13:08,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-23 15:13:08,315 INFO L87 Difference]: Start difference. First operand 894 states and 1138 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 15:13:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:08,616 INFO L93 Difference]: Finished difference Result 1589 states and 2024 transitions. [2022-11-23 15:13:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:13:08,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-11-23 15:13:08,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:08,622 INFO L225 Difference]: With dead ends: 1589 [2022-11-23 15:13:08,622 INFO L226 Difference]: Without dead ends: 666 [2022-11-23 15:13:08,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-23 15:13:08,628 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 54 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:08,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 187 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:13:08,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-11-23 15:13:08,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 575. [2022-11-23 15:13:08,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 410 states have (on average 1.1853658536585365) internal successors, (486), 448 states have internal predecessors, (486), 74 states have call successors, (74), 73 states have call predecessors, (74), 90 states have return successors, (119), 82 states have call predecessors, (119), 74 states have call successors, (119) [2022-11-23 15:13:08,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 679 transitions. [2022-11-23 15:13:08,724 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 679 transitions. Word has length 74 [2022-11-23 15:13:08,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:08,724 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 679 transitions. [2022-11-23 15:13:08,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 15:13:08,724 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 679 transitions. [2022-11-23 15:13:08,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 15:13:08,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:08,727 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:13:08,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 15:13:08,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 15:13:08,933 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:13:08,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:08,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1539431954, now seen corresponding path program 1 times [2022-11-23 15:13:08,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:08,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459986527] [2022-11-23 15:13:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:08,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 45 proven. 41 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 15:13:09,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:09,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459986527] [2022-11-23 15:13:09,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459986527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:13:09,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207574581] [2022-11-23 15:13:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:09,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:13:09,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:13:09,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:13:09,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:13:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:09,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-23 15:13:09,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:13:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 51 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:13:10,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:13:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 62 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:13:11,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207574581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:13:11,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [324093971] [2022-11-23 15:13:11,277 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-23 15:13:11,277 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:13:11,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:13:11,278 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:13:11,278 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:13:13,144 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 23 for LOIs [2022-11-23 15:13:13,147 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2022-11-23 15:13:13,312 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 59 for LOIs [2022-11-23 15:13:13,570 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 33 for LOIs [2022-11-23 15:13:13,572 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:13:17,623 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20102#(and (<= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~4#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~4#1| ~waterLevel~0) (<= 0 (+ |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 2147483648)) (= ~methaneLevelCritical~0 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~11#1|) (= 1 ~systemActive~0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~11#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~3#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~3#1| 0) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:13:17,623 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:13:17,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:13:17,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 35 [2022-11-23 15:13:17,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400537201] [2022-11-23 15:13:17,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:13:17,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-23 15:13:17,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:17,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-23 15:13:17,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=2978, Unknown=0, NotChecked=0, Total=3422 [2022-11-23 15:13:17,626 INFO L87 Difference]: Start difference. First operand 575 states and 679 transitions. Second operand has 35 states, 33 states have (on average 3.9696969696969697) internal successors, (131), 33 states have internal predecessors, (131), 12 states have call successors, (18), 8 states have call predecessors, (18), 13 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-23 15:13:18,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:18,660 INFO L93 Difference]: Finished difference Result 649 states and 768 transitions. [2022-11-23 15:13:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 15:13:18,661 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 3.9696969696969697) internal successors, (131), 33 states have internal predecessors, (131), 12 states have call successors, (18), 8 states have call predecessors, (18), 13 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) Word has length 87 [2022-11-23 15:13:18,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:18,661 INFO L225 Difference]: With dead ends: 649 [2022-11-23 15:13:18,661 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:13:18,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 214 SyntacticMatches, 10 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2481 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=782, Invalid=4620, Unknown=0, NotChecked=0, Total=5402 [2022-11-23 15:13:18,668 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 486 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:18,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 224 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:13:18,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:13:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:13:18,670 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) [2022-11-23 15:13:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:13:18,670 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2022-11-23 15:13:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:18,671 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:13:18,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 3.9696969696969697) internal successors, (131), 33 states have internal predecessors, (131), 12 states have call successors, (18), 8 states have call predecessors, (18), 13 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-23 15:13:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:13:18,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:13:18,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:13:18,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:13:18,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 15:13:18,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:13:23,430 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 731 737) no Hoare annotation was computed. [2022-11-23 15:13:23,430 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 731 737) the Hoare annotation is: true [2022-11-23 15:13:23,430 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 487 498) the Hoare annotation is: true [2022-11-23 15:13:23,430 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 487 498) no Hoare annotation was computed. [2022-11-23 15:13:23,431 INFO L895 garLoopResultBuilder]: At program point L779(line 779) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse0 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:13:23,431 INFO L895 garLoopResultBuilder]: At program point L449(line 449) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse0 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:13:23,431 INFO L895 garLoopResultBuilder]: At program point L784(line 784) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0))) (and (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (and .cse1 (= ~waterLevel~0 1))))) [2022-11-23 15:13:23,432 INFO L895 garLoopResultBuilder]: At program point L784-1(lines 765 789) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= ~waterLevel~0 1))) (and (or (and .cse0 .cse1 (<= 1 |timeShift_processEnvironment_~tmp~6#1|) .cse2) .cse3 (= |old(~waterLevel~0)| ~waterLevel~0) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse3 (and .cse1 .cse2)))) [2022-11-23 15:13:23,432 INFO L895 garLoopResultBuilder]: At program point L718-1(lines 718 724) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= ~waterLevel~0 1))) (and (or (and .cse0 .cse1 (<= 1 |timeShift_processEnvironment_~tmp~6#1|) .cse2) .cse3 (= |old(~waterLevel~0)| ~waterLevel~0) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse3 (and .cse1 .cse2)))) [2022-11-23 15:13:23,432 INFO L899 garLoopResultBuilder]: For program point L711-1(lines 710 729) no Hoare annotation was computed. [2022-11-23 15:13:23,432 INFO L895 garLoopResultBuilder]: At program point L773(lines 773 781) the Hoare annotation is: (let ((.cse4 (not (= |old(~waterLevel~0)| 1))) (.cse3 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (= 1 ~systemActive~0)))) (let ((.cse1 (not (<= |old(~waterLevel~0)| 2))) (.cse0 (and (or .cse4 .cse2) (or (and .cse3 (or (not (< 0 (+ |old(~waterLevel~0)| 1))) (not (<= |old(~waterLevel~0)| 0)))) .cse2)))) (and (or (< |old(~waterLevel~0)| 2) .cse0 .cse1) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= 1 |timeShift_processEnvironment_~tmp~6#1|) (= ~waterLevel~0 1)) .cse2 .cse1 (not (<= 2 |old(~waterLevel~0)|))) (or .cse3 .cse4 .cse0)))) [2022-11-23 15:13:23,433 INFO L895 garLoopResultBuilder]: At program point L769(lines 769 786) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (and .cse1 (= ~waterLevel~0 1))) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (and .cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (and (not .cse1) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))))) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:13:23,433 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 707 730) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1))) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0)) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:13:23,433 INFO L899 garLoopResultBuilder]: For program point L431(lines 431 437) no Hoare annotation was computed. [2022-11-23 15:13:23,434 INFO L895 garLoopResultBuilder]: At program point L427(lines 427 440) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ~waterLevel~0 1)) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (and (= |timeShift___utac_acc__Specification4_spec__1_~tmp~3#1| 1) .cse2 .cse3)) (or (and .cse0 .cse2 (<= 1 |timeShift_processEnvironment_~tmp~6#1|) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp~3#1| 0)) .cse3) .cse1 (and (= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~3#1|) (= |old(~waterLevel~0)| ~waterLevel~0)) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:13:23,434 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 707 730) no Hoare annotation was computed. [2022-11-23 15:13:23,434 INFO L895 garLoopResultBuilder]: At program point L427-1(lines 419 443) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ~waterLevel~0 1)) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (and (= |timeShift___utac_acc__Specification4_spec__1_~tmp~3#1| 1) .cse2 .cse3)) (or (and .cse0 .cse2 (<= 1 |timeShift_processEnvironment_~tmp~6#1|) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp~3#1| 0)) .cse3) .cse1 (and (= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~3#1|) (= |old(~waterLevel~0)| ~waterLevel~0)) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:13:23,434 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 449) no Hoare annotation was computed. [2022-11-23 15:13:23,434 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 566 595) no Hoare annotation was computed. [2022-11-23 15:13:23,435 INFO L902 garLoopResultBuilder]: At program point L576-2(lines 576 590) the Hoare annotation is: true [2022-11-23 15:13:23,435 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 566 595) the Hoare annotation is: true [2022-11-23 15:13:23,435 INFO L902 garLoopResultBuilder]: At program point L572(line 572) the Hoare annotation is: true [2022-11-23 15:13:23,435 INFO L899 garLoopResultBuilder]: For program point L572-1(line 572) no Hoare annotation was computed. [2022-11-23 15:13:23,435 INFO L902 garLoopResultBuilder]: At program point L591(lines 566 595) the Hoare annotation is: true [2022-11-23 15:13:23,435 INFO L899 garLoopResultBuilder]: For program point L587(line 587) no Hoare annotation was computed. [2022-11-23 15:13:23,435 INFO L899 garLoopResultBuilder]: For program point L580(lines 580 584) no Hoare annotation was computed. [2022-11-23 15:13:23,436 INFO L902 garLoopResultBuilder]: At program point L580-1(lines 580 584) the Hoare annotation is: true [2022-11-23 15:13:23,436 INFO L895 garLoopResultBuilder]: At program point L985(lines 936 986) the Hoare annotation is: false [2022-11-23 15:13:23,436 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-23 15:13:23,436 INFO L899 garLoopResultBuilder]: For program point L957(lines 957 963) no Hoare annotation was computed. [2022-11-23 15:13:23,436 INFO L895 garLoopResultBuilder]: At program point L957-1(lines 957 963) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2022-11-23 15:13:23,436 INFO L895 garLoopResultBuilder]: At program point L982(lines 937 984) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2022-11-23 15:13:23,437 INFO L895 garLoopResultBuilder]: At program point L949(line 949) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 .cse1 (<= ~waterLevel~0 2)) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2022-11-23 15:13:23,437 INFO L895 garLoopResultBuilder]: At program point L652(lines 652 659) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= |ULTIMATE.start_main_~tmp~4#1| 1) (= ~waterLevel~0 1)) [2022-11-23 15:13:23,437 INFO L902 garLoopResultBuilder]: At program point L652-2(lines 652 659) the Hoare annotation is: true [2022-11-23 15:13:23,437 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:13:23,437 INFO L895 garLoopResultBuilder]: At program point L975-2(lines 967 980) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2022-11-23 15:13:23,438 INFO L899 garLoopResultBuilder]: For program point L938(lines 937 984) no Hoare annotation was computed. [2022-11-23 15:13:23,438 INFO L895 garLoopResultBuilder]: At program point L959(line 959) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2022-11-23 15:13:23,438 INFO L902 garLoopResultBuilder]: At program point L988(lines 927 992) the Hoare annotation is: true [2022-11-23 15:13:23,438 INFO L899 garLoopResultBuilder]: For program point L947(lines 947 953) no Hoare annotation was computed. [2022-11-23 15:13:23,438 INFO L899 garLoopResultBuilder]: For program point L947-1(lines 947 953) no Hoare annotation was computed. [2022-11-23 15:13:23,438 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 739 763) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (and (not (= |old(~pumpRunning~0)| 0)) (or (not (<= ~waterLevel~0 0)) (not (< 0 (+ ~waterLevel~0 1))))))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) .cse2))) [2022-11-23 15:13:23,439 INFO L895 garLoopResultBuilder]: At program point L758(line 758) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1))) [2022-11-23 15:13:23,439 INFO L899 garLoopResultBuilder]: For program point L758-1(lines 739 763) no Hoare annotation was computed. [2022-11-23 15:13:23,439 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 739 763) no Hoare annotation was computed. [2022-11-23 15:13:23,439 INFO L895 garLoopResultBuilder]: At program point L753(line 753) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~5#1| 0))))) [2022-11-23 15:13:23,439 INFO L895 garLoopResultBuilder]: At program point L747(lines 747 755) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 0))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) (and .cse2 (= |processEnvironment__wrappee__highWaterSensor_~tmp~5#1| 1))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and .cse2 (= |processEnvironment__wrappee__highWaterSensor_~tmp~5#1| 0))))) [2022-11-23 15:13:23,440 INFO L895 garLoopResultBuilder]: At program point L743(lines 743 760) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (and (not (= |old(~pumpRunning~0)| 0)) (or (not (<= ~waterLevel~0 0)) (not (< 0 (+ ~waterLevel~0 1))))))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) .cse2))) [2022-11-23 15:13:23,440 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 475 486) no Hoare annotation was computed. [2022-11-23 15:13:23,440 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 475 486) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (= |old(~waterLevel~0)| ~waterLevel~0) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (= ~pumpRunning~0 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (= ~waterLevel~0 1)))) [2022-11-23 15:13:23,443 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:13:23,445 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:13:23,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:13:23 BoogieIcfgContainer [2022-11-23 15:13:23,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:13:23,470 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:13:23,470 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:13:23,470 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:13:23,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:12:42" (3/4) ... [2022-11-23 15:13:23,474 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:13:23,479 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-23 15:13:23,479 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-23 15:13:23,479 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-23 15:13:23,479 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-23 15:13:23,480 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:13:23,480 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-23 15:13:23,487 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 52 nodes and edges [2022-11-23 15:13:23,487 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-23 15:13:23,488 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 15:13:23,488 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:13:23,489 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:13:23,513 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) && (((!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-23 15:13:23,514 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && waterLevel == 1) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) [2022-11-23 15:13:23,514 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) && (((!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1)))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-23 15:13:23,514 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && waterLevel == 1) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) [2022-11-23 15:13:23,515 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(waterLevel == 1) || pumpRunning == 0) || !(1 == systemActive)) || (!(\old(pumpRunning) == 0) && (!(waterLevel <= 0) || !(0 < waterLevel + 1)))) && (((pumpRunning == 0 || !(1 == systemActive)) || !(2 == waterLevel)) || (!(\old(pumpRunning) == 0) && (!(waterLevel <= 0) || !(0 < waterLevel + 1)))) [2022-11-23 15:13:23,515 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((tmp == 1 && pumpRunning == 0) && waterLevel == 1)) && ((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && !(tmp == 0)) && waterLevel == 1) || !(1 == systemActive)) || (2 == tmp && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-23 15:13:23,515 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((tmp == 1 && pumpRunning == 0) && waterLevel == 1)) && ((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && !(tmp == 0)) && waterLevel == 1) || !(1 == systemActive)) || (2 == tmp && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-23 15:13:23,516 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) && ((!(1 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-23 15:13:23,516 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(waterLevel) < 2 || ((!(\old(waterLevel) == 1) || !(1 == systemActive)) && ((!(\old(pumpRunning) == 0) && (!(0 < \old(waterLevel) + 1) || !(\old(waterLevel) <= 0))) || !(1 == systemActive)))) || !(\old(waterLevel) <= 2)) && (((((pumpRunning == \old(pumpRunning) && 1 <= tmp) && waterLevel == 1) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || ((!(\old(waterLevel) == 1) || !(1 == systemActive)) && ((!(\old(pumpRunning) == 0) && (!(0 < \old(waterLevel) + 1) || !(\old(waterLevel) <= 0))) || !(1 == systemActive)))) [2022-11-23 15:13:23,517 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 == waterLevel)) || (pumpRunning == 0 && tmp == 1)) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 0)) [2022-11-23 15:13:23,540 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:13:23,541 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:13:23,541 INFO L158 Benchmark]: Toolchain (without parser) took 42165.99ms. Allocated memory was 144.7MB in the beginning and 536.9MB in the end (delta: 392.2MB). Free memory was 99.3MB in the beginning and 354.6MB in the end (delta: -255.3MB). Peak memory consumption was 139.0MB. Max. memory is 16.1GB. [2022-11-23 15:13:23,542 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 144.7MB. Free memory is still 114.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:13:23,542 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.22ms. Allocated memory is still 144.7MB. Free memory was 98.8MB in the beginning and 79.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 15:13:23,542 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.69ms. Allocated memory is still 144.7MB. Free memory was 79.9MB in the beginning and 77.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:13:23,543 INFO L158 Benchmark]: Boogie Preprocessor took 34.57ms. Allocated memory is still 144.7MB. Free memory was 77.8MB in the beginning and 76.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:13:23,543 INFO L158 Benchmark]: RCFGBuilder took 654.13ms. Allocated memory is still 144.7MB. Free memory was 75.8MB in the beginning and 49.6MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-23 15:13:23,543 INFO L158 Benchmark]: TraceAbstraction took 40875.86ms. Allocated memory was 144.7MB in the beginning and 536.9MB in the end (delta: 392.2MB). Free memory was 49.0MB in the beginning and 360.9MB in the end (delta: -311.9MB). Peak memory consumption was 260.7MB. Max. memory is 16.1GB. [2022-11-23 15:13:23,544 INFO L158 Benchmark]: Witness Printer took 71.00ms. Allocated memory is still 536.9MB. Free memory was 360.9MB in the beginning and 354.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 15:13:23,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 144.7MB. Free memory is still 114.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 471.22ms. Allocated memory is still 144.7MB. Free memory was 98.8MB in the beginning and 79.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.69ms. Allocated memory is still 144.7MB. Free memory was 79.9MB in the beginning and 77.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.57ms. Allocated memory is still 144.7MB. Free memory was 77.8MB in the beginning and 76.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 654.13ms. Allocated memory is still 144.7MB. Free memory was 75.8MB in the beginning and 49.6MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 40875.86ms. Allocated memory was 144.7MB in the beginning and 536.9MB in the end (delta: 392.2MB). Free memory was 49.0MB in the beginning and 360.9MB in the end (delta: -311.9MB). Peak memory consumption was 260.7MB. Max. memory is 16.1GB. * Witness Printer took 71.00ms. Allocated memory is still 536.9MB. Free memory was 360.9MB in the beginning and 354.6MB 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: 449]: 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 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.7s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2355 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2329 mSDsluCounter, 2477 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1905 mSDsCounter, 1621 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4580 IncrementalHoareTripleChecker+Invalid, 6201 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1621 mSolverCounterUnsat, 572 mSDtfsCounter, 4580 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 781 GetRequests, 497 SyntacticMatches, 14 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8620 ImplicationChecksByTransitivity, 13.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=894occurred in iteration=10, InterpolantAutomatonStates: 178, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 957 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 33 LocationsWithAnnotation, 1956 PreInvPairs, 2019 NumberOfFragments, 920 HoareAnnotationTreeSize, 1956 FomulaSimplifications, 18426 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 33 FomulaSimplificationsInter, 31241 FormulaSimplificationTreeSizeReductionInter, 3.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 684 NumberOfCodeBlocks, 660 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 803 ConstructedInterpolants, 0 QuantifiedInterpolants, 3015 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1211 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 354/509 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 419]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((tmp == 1 && pumpRunning == 0) && waterLevel == 1)) && ((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && !(tmp == 0)) && waterLevel == 1) || !(1 == systemActive)) || (2 == tmp && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 773]: Loop Invariant Derived loop invariant: (((\old(waterLevel) < 2 || ((!(\old(waterLevel) == 1) || !(1 == systemActive)) && ((!(\old(pumpRunning) == 0) && (!(0 < \old(waterLevel) + 1) || !(\old(waterLevel) <= 0))) || !(1 == systemActive)))) || !(\old(waterLevel) <= 2)) && (((((pumpRunning == \old(pumpRunning) && 1 <= tmp) && waterLevel == 1) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || ((!(\old(waterLevel) == 1) || !(1 == systemActive)) && ((!(\old(pumpRunning) == 0) && (!(0 < \old(waterLevel) + 1) || !(\old(waterLevel) <= 0))) || !(1 == systemActive)))) - InvariantResult [Line: 718]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && waterLevel == 1) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) - InvariantResult [Line: 937]: Loop Invariant Derived loop invariant: ((2 == waterLevel && 1 == systemActive) && splverifierCounter == 0) || (((pumpRunning == 0 && 1 == systemActive) && splverifierCounter == 0) && waterLevel == 1) - InvariantResult [Line: 927]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 707]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) && (((!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 743]: Loop Invariant Derived loop invariant: (((!(waterLevel == 1) || pumpRunning == 0) || !(1 == systemActive)) || (!(\old(pumpRunning) == 0) && (!(waterLevel <= 0) || !(0 < waterLevel + 1)))) && (((pumpRunning == 0 || !(1 == systemActive)) || !(2 == waterLevel)) || (!(\old(pumpRunning) == 0) && (!(waterLevel <= 0) || !(0 < waterLevel + 1)))) - InvariantResult [Line: 957]: Loop Invariant Derived loop invariant: ((2 == waterLevel && 1 == systemActive) && splverifierCounter == 0) || (((pumpRunning == 0 && 1 == systemActive) && splverifierCounter == 0) && waterLevel == 1) - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 652]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 765]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && waterLevel == 1) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) - InvariantResult [Line: 769]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) && (((!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1)))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 449]: Loop Invariant Derived loop invariant: ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) && ((!(1 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 652]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && 1 == systemActive) && tmp == 1) && waterLevel == 1 - InvariantResult [Line: 747]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 == waterLevel)) || (pumpRunning == 0 && tmp == 1)) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 0)) - InvariantResult [Line: 936]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 566]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 427]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((tmp == 1 && pumpRunning == 0) && waterLevel == 1)) && ((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && !(tmp == 0)) && waterLevel == 1) || !(1 == systemActive)) || (2 == tmp && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) RESULT: Ultimate proved your program to be correct! [2022-11-23 15:13:23,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781067e3-d1da-4b10-8dbd-1ca6bba036c8/bin/utaipan-Q6hlc19bkW/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