./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45ba8c3ee5105630bc9146965d68439e6204903aca4c5a31cd4f017e456c8589 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:42:31,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:42:31,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:42:31,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:42:31,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:42:31,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:42:31,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:42:31,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:42:31,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:42:31,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:42:31,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:42:31,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:42:31,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:42:31,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:42:31,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:42:31,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:42:31,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:42:31,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:42:31,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:42:31,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:42:31,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:42:31,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:42:31,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:42:31,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:42:31,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:42:31,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:42:31,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:42:31,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:42:31,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:42:31,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:42:31,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:42:31,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:42:31,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:42:31,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:42:31,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:42:31,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:42:31,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:42:31,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:42:31,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:42:31,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:42:31,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:42:31,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:42:31,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:42:31,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:42:31,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:42:31,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:42:31,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:42:31,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:42:31,684 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:42:31,684 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:42:31,685 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:42:31,685 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:42:31,686 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:42:31,687 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:42:31,687 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:42:31,687 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:42:31,687 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:42:31,688 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:42:31,688 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:42:31,688 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:42:31,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:42:31,689 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:42:31,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:42:31,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:42:31,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:42:31,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:42:31,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:42:31,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:42:31,691 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:42:31,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:42:31,692 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:42:31,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:42:31,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:42:31,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:42:31,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:42:31,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:42:31,694 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:42:31,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:42:31,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:42:31,695 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:42:31,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:42:31,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:42:31,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:42:31,696 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_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45ba8c3ee5105630bc9146965d68439e6204903aca4c5a31cd4f017e456c8589 [2022-11-19 06:42:32,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:42:32,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:42:32,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:42:32,095 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:42:32,096 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:42:32,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c [2022-11-19 06:42:32,182 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/data/db8fa1550/91877287c8e54d1b863ecf80d81998fa/FLAGe5f6b2baf [2022-11-19 06:42:32,965 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:42:32,967 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c [2022-11-19 06:42:32,984 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/data/db8fa1550/91877287c8e54d1b863ecf80d81998fa/FLAGe5f6b2baf [2022-11-19 06:42:33,196 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/data/db8fa1550/91877287c8e54d1b863ecf80d81998fa [2022-11-19 06:42:33,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:42:33,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:42:33,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:42:33,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:42:33,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:42:33,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:33,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595b6236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33, skipping insertion in model container [2022-11-19 06:42:33,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:33,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:42:33,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:42:33,621 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c[1605,1618] [2022-11-19 06:42:33,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:42:33,807 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:42:33,848 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c[1605,1618] [2022-11-19 06:42:33,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:42:33,995 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:42:33,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33 WrapperNode [2022-11-19 06:42:33,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:42:33,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:42:33,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:42:33,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:42:34,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:34,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:34,082 INFO L138 Inliner]: procedures = 55, calls = 98, calls flagged for inlining = 24, calls inlined = 20, statements flattened = 179 [2022-11-19 06:42:34,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:42:34,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:42:34,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:42:34,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:42:34,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:34,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:34,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:34,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:34,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:34,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:34,141 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:34,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:34,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:42:34,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:42:34,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:42:34,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:42:34,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:34,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:42:34,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:42:34,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:42:34,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:42:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:42:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-19 06:42:34,264 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-19 06:42:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 06:42:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 06:42:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 06:42:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 06:42:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-19 06:42:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-19 06:42:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2022-11-19 06:42:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2022-11-19 06:42:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:42:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-19 06:42:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-19 06:42:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:42:34,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:42:34,407 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:42:34,411 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:42:34,839 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:42:35,033 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:42:35,034 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 06:42:35,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:35 BoogieIcfgContainer [2022-11-19 06:42:35,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:42:35,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:42:35,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:42:35,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:42:35,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:42:33" (1/3) ... [2022-11-19 06:42:35,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7277c88c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:35, skipping insertion in model container [2022-11-19 06:42:35,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33" (2/3) ... [2022-11-19 06:42:35,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7277c88c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:35, skipping insertion in model container [2022-11-19 06:42:35,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:35" (3/3) ... [2022-11-19 06:42:35,061 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2022-11-19 06:42:35,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:42:35,089 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:42:35,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:42:35,205 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;@22322474, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:42:35,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:42:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-19 06:42:35,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 06:42:35,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:35,230 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:35,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:35,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:35,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1867634907, now seen corresponding path program 1 times [2022-11-19 06:42:35,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:35,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590522231] [2022-11-19 06:42:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:35,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:42:35,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:35,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590522231] [2022-11-19 06:42:35,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590522231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:35,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:35,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:42:35,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172105064] [2022-11-19 06:42:35,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:35,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:42:35,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:35,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:42:35,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:42:35,651 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 06:42:35,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:35,730 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-11-19 06:42:35,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:42:35,734 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-11-19 06:42:35,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:35,746 INFO L225 Difference]: With dead ends: 100 [2022-11-19 06:42:35,746 INFO L226 Difference]: Without dead ends: 46 [2022-11-19 06:42:35,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:42:35,769 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:35,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:42:35,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-19 06:42:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-19 06:42:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3) internal successors, (39), 35 states have internal predecessors, (39), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-19 06:42:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-11-19 06:42:35,829 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 21 [2022-11-19 06:42:35,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:35,830 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-11-19 06:42:35,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 06:42:35,830 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-11-19 06:42:35,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 06:42:35,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:35,833 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:35,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:42:35,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:35,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:35,835 INFO L85 PathProgramCache]: Analyzing trace with hash 333823414, now seen corresponding path program 1 times [2022-11-19 06:42:35,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:35,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423036662] [2022-11-19 06:42:35,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:35,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:42:35,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:35,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423036662] [2022-11-19 06:42:35,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423036662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:35,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:35,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:42:35,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237706074] [2022-11-19 06:42:35,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:35,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:42:35,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:35,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:42:35,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:42:35,966 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 06:42:36,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:36,022 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2022-11-19 06:42:36,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:42:36,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-19 06:42:36,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:36,025 INFO L225 Difference]: With dead ends: 69 [2022-11-19 06:42:36,025 INFO L226 Difference]: Without dead ends: 38 [2022-11-19 06:42:36,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:42:36,030 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:36,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 61 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:42:36,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-19 06:42:36,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-19 06:42:36,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.32) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-19 06:42:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-11-19 06:42:36,041 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 22 [2022-11-19 06:42:36,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:36,042 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-11-19 06:42:36,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 06:42:36,042 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-11-19 06:42:36,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 06:42:36,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:36,044 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:36,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:42:36,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:36,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:36,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1844053297, now seen corresponding path program 1 times [2022-11-19 06:42:36,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:36,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929969144] [2022-11-19 06:42:36,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:36,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:42:36,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:36,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929969144] [2022-11-19 06:42:36,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929969144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:36,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:36,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 06:42:36,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778110837] [2022-11-19 06:42:36,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:36,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:42:36,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:36,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:42:36,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:42:36,331 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:42:36,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:36,924 INFO L93 Difference]: Finished difference Result 145 states and 181 transitions. [2022-11-19 06:42:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 06:42:36,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-11-19 06:42:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:36,927 INFO L225 Difference]: With dead ends: 145 [2022-11-19 06:42:36,927 INFO L226 Difference]: Without dead ends: 109 [2022-11-19 06:42:36,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-19 06:42:36,931 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 77 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:36,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 289 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:42:36,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-19 06:42:36,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 76. [2022-11-19 06:42:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.26) internal successors, (63), 56 states have internal predecessors, (63), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (15), 12 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-19 06:42:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2022-11-19 06:42:36,955 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 24 [2022-11-19 06:42:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:36,956 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2022-11-19 06:42:36,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:42:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2022-11-19 06:42:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 06:42:36,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:36,958 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:36,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:42:36,959 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:36,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:36,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1738114571, now seen corresponding path program 1 times [2022-11-19 06:42:36,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:36,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682225222] [2022-11-19 06:42:36,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:36,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:42:37,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:37,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682225222] [2022-11-19 06:42:37,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682225222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:37,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:37,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 06:42:37,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37079727] [2022-11-19 06:42:37,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:37,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:42:37,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:37,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:42:37,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:42:37,489 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:42:37,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:37,761 INFO L93 Difference]: Finished difference Result 248 states and 313 transitions. [2022-11-19 06:42:37,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:42:37,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-11-19 06:42:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:37,773 INFO L225 Difference]: With dead ends: 248 [2022-11-19 06:42:37,773 INFO L226 Difference]: Without dead ends: 174 [2022-11-19 06:42:37,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:42:37,781 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 80 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:37,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 188 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:42:37,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-19 06:42:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 101. [2022-11-19 06:42:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 74 states have internal predecessors, (88), 15 states have call successors, (15), 15 states have call predecessors, (15), 16 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-19 06:42:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2022-11-19 06:42:37,843 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 27 [2022-11-19 06:42:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:37,844 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2022-11-19 06:42:37,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:42:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2022-11-19 06:42:37,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 06:42:37,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:37,849 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:37,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:42:37,850 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:37,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:37,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1514925428, now seen corresponding path program 1 times [2022-11-19 06:42:37,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:37,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701934532] [2022-11-19 06:42:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:37,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:42:38,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:38,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701934532] [2022-11-19 06:42:38,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701934532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:38,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:38,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 06:42:38,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223265208] [2022-11-19 06:42:38,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:38,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:42:38,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:42:38,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:42:38,270 INFO L87 Difference]: Start difference. First operand 101 states and 120 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:42:38,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:38,840 INFO L93 Difference]: Finished difference Result 260 states and 314 transitions. [2022-11-19 06:42:38,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 06:42:38,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-11-19 06:42:38,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:38,850 INFO L225 Difference]: With dead ends: 260 [2022-11-19 06:42:38,850 INFO L226 Difference]: Without dead ends: 200 [2022-11-19 06:42:38,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-19 06:42:38,862 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 130 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:38,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 266 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:42:38,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-19 06:42:38,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 153. [2022-11-19 06:42:38,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 105 states have (on average 1.2666666666666666) internal successors, (133), 114 states have internal predecessors, (133), 23 states have call successors, (23), 21 states have call predecessors, (23), 24 states have return successors, (27), 23 states have call predecessors, (27), 23 states have call successors, (27) [2022-11-19 06:42:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 183 transitions. [2022-11-19 06:42:38,929 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 183 transitions. Word has length 30 [2022-11-19 06:42:38,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:38,931 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 183 transitions. [2022-11-19 06:42:38,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:42:38,932 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 183 transitions. [2022-11-19 06:42:38,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 06:42:38,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:38,945 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-11-19 06:42:38,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:42:38,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:38,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:38,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1138650889, now seen corresponding path program 1 times [2022-11-19 06:42:38,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:38,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369340927] [2022-11-19 06:42:38,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:38,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:42:39,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:39,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369340927] [2022-11-19 06:42:39,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369340927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:39,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:39,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:42:39,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806068957] [2022-11-19 06:42:39,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:39,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:42:39,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:39,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:42:39,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:42:39,121 INFO L87 Difference]: Start difference. First operand 153 states and 183 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-19 06:42:39,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:39,211 INFO L93 Difference]: Finished difference Result 245 states and 293 transitions. [2022-11-19 06:42:39,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:42:39,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 44 [2022-11-19 06:42:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:39,216 INFO L225 Difference]: With dead ends: 245 [2022-11-19 06:42:39,216 INFO L226 Difference]: Without dead ends: 136 [2022-11-19 06:42:39,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:42:39,222 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 17 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:39,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 84 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:42:39,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-19 06:42:39,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2022-11-19 06:42:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 93 states have (on average 1.2258064516129032) internal successors, (114), 101 states have internal predecessors, (114), 21 states have call successors, (21), 19 states have call predecessors, (21), 21 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) [2022-11-19 06:42:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2022-11-19 06:42:39,284 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 44 [2022-11-19 06:42:39,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:39,286 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2022-11-19 06:42:39,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-19 06:42:39,287 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2022-11-19 06:42:39,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-19 06:42:39,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:39,289 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:39,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:42:39,290 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:39,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:39,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1042267128, now seen corresponding path program 1 times [2022-11-19 06:42:39,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:39,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567729098] [2022-11-19 06:42:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:39,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:42:39,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:39,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567729098] [2022-11-19 06:42:39,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567729098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:39,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:39,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 06:42:39,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477013725] [2022-11-19 06:42:39,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:39,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:42:39,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:39,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:42:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:42:39,689 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-19 06:42:40,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:40,134 INFO L93 Difference]: Finished difference Result 250 states and 313 transitions. [2022-11-19 06:42:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 06:42:40,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 49 [2022-11-19 06:42:40,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:40,138 INFO L225 Difference]: With dead ends: 250 [2022-11-19 06:42:40,138 INFO L226 Difference]: Without dead ends: 190 [2022-11-19 06:42:40,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:42:40,140 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 79 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:40,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 150 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:42:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-19 06:42:40,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 145. [2022-11-19 06:42:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 98 states have (on average 1.2244897959183674) internal successors, (120), 109 states have internal predecessors, (120), 23 states have call successors, (23), 20 states have call predecessors, (23), 23 states have return successors, (29), 22 states have call predecessors, (29), 23 states have call successors, (29) [2022-11-19 06:42:40,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2022-11-19 06:42:40,187 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 49 [2022-11-19 06:42:40,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:40,188 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2022-11-19 06:42:40,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-19 06:42:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2022-11-19 06:42:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-19 06:42:40,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:40,190 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:40,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:42:40,191 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:40,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:40,191 INFO L85 PathProgramCache]: Analyzing trace with hash 638797489, now seen corresponding path program 1 times [2022-11-19 06:42:40,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:40,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391305161] [2022-11-19 06:42:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:40,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:42:40,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:40,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391305161] [2022-11-19 06:42:40,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391305161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:42:40,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486154161] [2022-11-19 06:42:40,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:40,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:42:40,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:42:40,374 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:42:40,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:42:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:40,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-19 06:42:40,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:42:40,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:42:40,881 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:42:40,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486154161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:42:40,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1878834792] [2022-11-19 06:42:40,906 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-19 06:42:40,906 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:42:40,911 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:42:40,918 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:42:40,919 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:42:45,176 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 57 for LOIs [2022-11-19 06:42:45,188 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 30 for LOIs [2022-11-19 06:42:45,566 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 21 for LOIs [2022-11-19 06:42:45,569 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 33 for LOIs [2022-11-19 06:42:45,572 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:42:50,933 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3585#(and (= |timeShift_getWaterLevel_~retValue_acc~7#1| |timeShift_getWaterLevel_#res#1|) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (<= 0 ~systemActive~0) (= ~methaneLevelCritical~0 0) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (= ~head~0.offset 0) (<= |old(~pumpRunning~0)| 2147483647) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~7#1| ~waterLevel~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2)) (<= 0 (+ |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483648)) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2147483647) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483647) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~7#1| 2147483648)) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 06:42:50,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:42:50,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:42:50,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-11-19 06:42:50,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375056810] [2022-11-19 06:42:50,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:42:50,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:42:50,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:50,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:42:50,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 06:42:50,936 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 06:42:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:51,512 INFO L93 Difference]: Finished difference Result 455 states and 550 transitions. [2022-11-19 06:42:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 06:42:51,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 52 [2022-11-19 06:42:51,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:51,518 INFO L225 Difference]: With dead ends: 455 [2022-11-19 06:42:51,518 INFO L226 Difference]: Without dead ends: 351 [2022-11-19 06:42:51,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=208, Invalid=1432, Unknown=0, NotChecked=0, Total=1640 [2022-11-19 06:42:51,520 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 132 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:51,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 291 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:42:51,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-19 06:42:51,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 323. [2022-11-19 06:42:51,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 216 states have (on average 1.1898148148148149) internal successors, (257), 240 states have internal predecessors, (257), 52 states have call successors, (52), 47 states have call predecessors, (52), 54 states have return successors, (72), 51 states have call predecessors, (72), 52 states have call successors, (72) [2022-11-19 06:42:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 381 transitions. [2022-11-19 06:42:51,588 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 381 transitions. Word has length 52 [2022-11-19 06:42:51,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:51,589 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 381 transitions. [2022-11-19 06:42:51,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 06:42:51,589 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 381 transitions. [2022-11-19 06:42:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-19 06:42:51,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:51,592 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:51,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:42:51,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 06:42:51,799 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:51,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:51,800 INFO L85 PathProgramCache]: Analyzing trace with hash -657894923, now seen corresponding path program 1 times [2022-11-19 06:42:51,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:51,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834791345] [2022-11-19 06:42:51,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:51,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 06:42:51,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:51,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834791345] [2022-11-19 06:42:51,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834791345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:51,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:51,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:42:51,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446223017] [2022-11-19 06:42:51,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:51,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:42:51,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:51,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:42:51,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:42:51,971 INFO L87 Difference]: Start difference. First operand 323 states and 381 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-19 06:42:52,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:52,093 INFO L93 Difference]: Finished difference Result 613 states and 727 transitions. [2022-11-19 06:42:52,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:42:52,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 55 [2022-11-19 06:42:52,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:52,095 INFO L225 Difference]: With dead ends: 613 [2022-11-19 06:42:52,096 INFO L226 Difference]: Without dead ends: 90 [2022-11-19 06:42:52,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:42:52,098 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 31 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:52,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 110 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:42:52,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-19 06:42:52,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 83. [2022-11-19 06:42:52,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 61 states have internal predecessors, (65), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 06:42:52,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2022-11-19 06:42:52,125 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 55 [2022-11-19 06:42:52,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:52,125 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2022-11-19 06:42:52,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-19 06:42:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2022-11-19 06:42:52,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-19 06:42:52,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:52,130 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:52,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 06:42:52,130 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:52,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:52,131 INFO L85 PathProgramCache]: Analyzing trace with hash 74301078, now seen corresponding path program 1 times [2022-11-19 06:42:52,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:52,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704566027] [2022-11-19 06:42:52,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:52,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:42:52,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:52,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704566027] [2022-11-19 06:42:52,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704566027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:42:52,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629325458] [2022-11-19 06:42:52,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:52,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:42:52,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:42:52,521 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:42:52,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:42:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:52,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-19 06:42:52,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 06:42:53,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:42:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 06:42:53,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629325458] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:42:53,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1266099296] [2022-11-19 06:42:53,624 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-19 06:42:53,624 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:42:53,625 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:42:53,625 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:42:53,625 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:43:02,744 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 150 for LOIs [2022-11-19 06:43:02,808 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 50 for LOIs [2022-11-19 06:43:03,606 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 26 for LOIs [2022-11-19 06:43:03,609 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 33 for LOIs [2022-11-19 06:43:03,611 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:43:13,160 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6310#(and (<= |timeShift_isHighWaterLevel_~tmp~6#1| 1) (<= |timeShift_isHighWaterLevel_#res#1| 1) (<= 0 |timeShift_isHighWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~7#1| |timeShift_getWaterLevel_#res#1|) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (<= 0 |old(~pumpRunning~0)|) (<= 0 |timeShift_processEnvironment_~tmp~5#1|) (<= |timeShift_isHighWaterSensorDry_#res#1| 1) (<= 0 ~systemActive~0) (= ~methaneLevelCritical~0 0) (<= 0 |old(~switchedOnBeforeTS~0)|) (<= |timeShift_isHighWaterLevel_~retValue_acc~11#1| 1) (= ~head~0.offset 0) (<= 0 |timeShift_isHighWaterSensorDry_#res#1|) (<= |old(~switchedOnBeforeTS~0)| 0) (<= 0 |timeShift_isHighWaterSensorDry_~retValue_acc~8#1|) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 1) (<= |old(~pumpRunning~0)| 0) (<= 0 |timeShift_isHighWaterLevel_~tmp~6#1|) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (<= 0 |timeShift_isHighWaterLevel_~tmp___0~1#1|) (= |timeShift_getWaterLevel_~retValue_acc~7#1| ~waterLevel~0) (<= 0 |timeShift_isHighWaterLevel_~retValue_acc~11#1|) (<= |timeShift_processEnvironment_~tmp~5#1| 1) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= |timeShift_isHighWaterSensorDry_~retValue_acc~8#1| 1) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2)) (<= |timeShift_isHighWaterLevel_~tmp___0~1#1| 1) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2147483647) (<= 0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~7#1| 2147483648)) (= ~pumpRunning~0 1) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 06:43:13,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:43:13,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:43:13,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 23 [2022-11-19 06:43:13,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143544323] [2022-11-19 06:43:13,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:43:13,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-19 06:43:13,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:43:13,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-19 06:43:13,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=2141, Unknown=0, NotChecked=0, Total=2450 [2022-11-19 06:43:13,164 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 23 states, 21 states have (on average 4.333333333333333) internal successors, (91), 22 states have internal predecessors, (91), 8 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-19 06:43:13,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:43:13,910 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2022-11-19 06:43:13,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 06:43:13,910 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.333333333333333) internal successors, (91), 22 states have internal predecessors, (91), 8 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 58 [2022-11-19 06:43:13,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:43:13,911 INFO L225 Difference]: With dead ends: 104 [2022-11-19 06:43:13,911 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:43:13,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=495, Invalid=3165, Unknown=0, NotChecked=0, Total=3660 [2022-11-19 06:43:13,914 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 196 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:43:13,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 149 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:43:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:43:13,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:43:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:43:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:43:13,916 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2022-11-19 06:43:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:43:13,917 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:43:13,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.333333333333333) internal successors, (91), 22 states have internal predecessors, (91), 8 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-19 06:43:13,917 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:43:13,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:43:13,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:43:13,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 06:43:14,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:43:14,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 06:43:19,414 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 768 774) no Hoare annotation was computed. [2022-11-19 06:43:19,414 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 768 774) the Hoare annotation is: true [2022-11-19 06:43:19,414 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 665 676) the Hoare annotation is: true [2022-11-19 06:43:19,415 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 665 676) no Hoare annotation was computed. [2022-11-19 06:43:19,415 INFO L895 garLoopResultBuilder]: At program point L795(line 795) the Hoare annotation is: (let ((.cse3 (not (= |old(~waterLevel~0)| 1)))) (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (and (not (= ~pumpRunning~0 0)) (or .cse3 (= ~waterLevel~0 0)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (.cse2 (not (= |old(~waterLevel~0)| 2)))) (and (or .cse0 .cse1) (or (not .cse1) .cse2) (or .cse0 .cse3) (or .cse2 (= ~waterLevel~0 1)) (not (= 0 ~systemActive~0))))) [2022-11-19 06:43:19,416 INFO L895 garLoopResultBuilder]: At program point L795-1(lines 776 800) the Hoare annotation is: (let ((.cse6 (= ~pumpRunning~0 0))) (let ((.cse4 (not .cse6)) (.cse5 (not (= |old(~waterLevel~0)| 1))) (.cse7 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (not (= |old(~waterLevel~0)| 2))) (.cse2 (and .cse4 (or .cse5 (= ~waterLevel~0 0)) .cse7)) (.cse3 (= ~waterLevel~0 1))) (and (or (not .cse0) (= 2 ~waterLevel~0) .cse1) (or .cse2 .cse0) (or .cse0 .cse1 .cse3) (or .cse2 (and (= |timeShift_processEnvironment_~tmp~5#1| 1) .cse4) .cse1) (or .cse2 .cse5 (and .cse6 (= |timeShift_processEnvironment_~tmp~5#1| 0) .cse3 .cse7)) (not (= 0 ~systemActive~0)))))) [2022-11-19 06:43:19,416 INFO L899 garLoopResultBuilder]: For program point L940(lines 940 946) no Hoare annotation was computed. [2022-11-19 06:43:19,416 INFO L895 garLoopResultBuilder]: At program point L755-1(lines 755 761) the Hoare annotation is: (let ((.cse10 (= ~pumpRunning~0 0))) (let ((.cse4 (not .cse10)) (.cse9 (not (= |old(~waterLevel~0)| 1))) (.cse3 (= |old(~pumpRunning~0)| 0)) (.cse8 (= 0 ~systemActive~0)) (.cse11 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (let ((.cse2 (and .cse8 .cse11)) (.cse5 (= 2 ~waterLevel~0)) (.cse1 (and .cse3 (not .cse8))) (.cse6 (not (= |old(~waterLevel~0)| 2))) (.cse0 (and .cse4 (or .cse9 (= ~waterLevel~0 0)) .cse11)) (.cse7 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 .cse2) (or (not .cse3) (and .cse4 .cse5) .cse6 .cse2) (or .cse0 (= |timeShift_processEnvironment_~tmp~5#1| 1) .cse6 .cse2) (or (and .cse4 .cse7) (and .cse5 .cse8) .cse1 .cse6) (or .cse0 .cse9 (and .cse10 (= |timeShift_processEnvironment_~tmp~5#1| 0) .cse7 .cse11) (and (or .cse4 .cse7) .cse8)))))) [2022-11-19 06:43:19,417 INFO L895 garLoopResultBuilder]: At program point L784(lines 784 792) the Hoare annotation is: (let ((.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (and (= |old(~pumpRunning~0)| 0) (or (and .cse0 (= 2 ~waterLevel~0) .cse1) .cse2) (or (= |timeShift_processEnvironment_~tmp~5#1| 1) .cse2) (or (not (= |old(~waterLevel~0)| 1)) (and .cse0 (= |timeShift_processEnvironment_~tmp~5#1| 0) (= ~waterLevel~0 1) .cse1)) (not (= 0 ~systemActive~0)))) [2022-11-19 06:43:19,417 INFO L895 garLoopResultBuilder]: At program point L780(lines 780 797) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0))) (let ((.cse2 (not .cse0)) (.cse4 (= |old(~pumpRunning~0)| 0)) (.cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse1 (not (= |old(~waterLevel~0)| 2)))) (and (or .cse0 .cse1 (= ~waterLevel~0 1)) (or (and .cse2 .cse3) .cse4) (or (and (or .cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (or .cse0 (= ~waterLevel~0 0)) .cse3) (not (= |old(~waterLevel~0)| 1))) (or (not .cse4) (and (= 2 ~waterLevel~0) .cse3) .cse1) (not (= 0 ~systemActive~0))))) [2022-11-19 06:43:19,418 INFO L895 garLoopResultBuilder]: At program point L937(line 937) the Hoare annotation is: (let ((.cse7 (= ~pumpRunning~0 0)) (.cse9 (= ~waterLevel~0 1))) (let ((.cse3 (= 0 ~systemActive~0)) (.cse12 (or (= |old(~waterLevel~0)| ~waterLevel~0) .cse9)) (.cse11 (not .cse7)) (.cse8 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| ~waterLevel~0)) (.cse6 (not (= |old(~waterLevel~0)| 1))) (.cse10 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse4 (and .cse11 .cse8 (or .cse6 (= ~waterLevel~0 0)) .cse10)) (.cse1 (and (or .cse11 (= 2 ~waterLevel~0)) .cse3 .cse12)) (.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse5 (and .cse3 .cse10))) (and (or (not .cse0) .cse1 .cse2) (or (and .cse0 (not .cse3)) .cse4 .cse5) (or .cse6 (and .cse7 (= |timeShift_processEnvironment_~tmp~5#1| 0) .cse8 .cse9 .cse10) .cse4 (and (or .cse11 .cse9) .cse3)) (or (and .cse11 .cse12) .cse1 .cse2) (or .cse2 .cse5 .cse9))))) [2022-11-19 06:43:19,418 INFO L899 garLoopResultBuilder]: For program point L937-1(line 937) no Hoare annotation was computed. [2022-11-19 06:43:19,418 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (and (not (= |old(~waterLevel~0)| 1)) (= |old(~pumpRunning~0)| 0) (not (= |old(~waterLevel~0)| 2)) (not (= 0 ~systemActive~0))) [2022-11-19 06:43:19,418 INFO L899 garLoopResultBuilder]: For program point L748-2(lines 744 766) no Hoare annotation was computed. [2022-11-19 06:43:19,419 INFO L895 garLoopResultBuilder]: At program point L922(line 922) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse2 (= ~pumpRunning~0 0)) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)) (let ((.cse1 (= 0 ~systemActive~0))) (or (and .cse0 (not .cse1)) (and (or (not .cse2) .cse1) .cse3))) (or (not .cse0) .cse2 .cse4) (or .cse4 .cse3))) [2022-11-19 06:43:19,419 INFO L895 garLoopResultBuilder]: At program point L922-1(line 922) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__2_#t~ret49#1|)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (= |old(~pumpRunning~0)| 0)) (.cse5 (= ~pumpRunning~0 0)) (.cse1 (not (= |old(~waterLevel~0)| 2)))) (and (or (not (= |old(~waterLevel~0)| 1)) (and .cse0 (= ~waterLevel~0 1))) (or .cse1 (and .cse0 .cse2)) (let ((.cse4 (= 0 ~systemActive~0))) (or (and .cse3 (not .cse4)) (and (or (not .cse5) .cse4) .cse0 .cse2))) (or (not .cse3) .cse5 .cse1))) [2022-11-19 06:43:19,419 INFO L895 garLoopResultBuilder]: At program point L790(line 790) the Hoare annotation is: (and (= |old(~pumpRunning~0)| 0) (not (= |old(~waterLevel~0)| 2)) (or (not (= |old(~waterLevel~0)| 1)) (and (= ~pumpRunning~0 0) (= |timeShift_processEnvironment_~tmp~5#1| 0) (= ~waterLevel~0 1) (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (not (= 0 ~systemActive~0))) [2022-11-19 06:43:19,420 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 741 767) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse2 (= ~pumpRunning~0 0)) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)) (let ((.cse1 (= 0 ~systemActive~0))) (or (and .cse0 (not .cse1)) (and (or (not .cse2) .cse1) .cse3))) (or (not .cse0) .cse2 .cse4) (or .cse4 .cse3))) [2022-11-19 06:43:19,420 INFO L899 garLoopResultBuilder]: For program point L939(lines 939 949) no Hoare annotation was computed. [2022-11-19 06:43:19,420 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 741 767) no Hoare annotation was computed. [2022-11-19 06:43:19,420 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-19 06:43:19,421 INFO L899 garLoopResultBuilder]: For program point L935(lines 935 952) no Hoare annotation was computed. [2022-11-19 06:43:19,421 INFO L895 garLoopResultBuilder]: At program point L935-1(lines 927 955) the Hoare annotation is: (let ((.cse10 (= ~pumpRunning~0 0))) (let ((.cse9 (not .cse10)) (.cse5 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| ~waterLevel~0)) (.cse4 (not (= |old(~waterLevel~0)| 1)))) (let ((.cse0 (and .cse9 .cse5 (or .cse4 (= ~waterLevel~0 0)))) (.cse1 (= |old(~pumpRunning~0)| 0)) (.cse3 (not (= |old(~waterLevel~0)| 2))) (.cse2 (= 0 ~systemActive~0)) (.cse8 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 .cse2) (or (not .cse1) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2) .cse3 .cse2) (let ((.cse6 (or .cse9 (= 2 ~waterLevel~0))) (.cse7 (or (= |old(~waterLevel~0)| ~waterLevel~0) .cse8))) (or (and .cse4 .cse5 .cse6 .cse7) (and .cse4 .cse6 .cse2 .cse7) .cse3)) (or .cse4 .cse0 (and (<= |timeShift_processEnvironment_~tmp~5#1| 0) (< 0 (+ |timeShift_processEnvironment_~tmp~5#1| 1)) .cse10 .cse5 .cse8) (and (or .cse9 .cse8) .cse2)) (or .cse1 .cse3 .cse2 .cse8))))) [2022-11-19 06:43:19,421 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 61 90) no Hoare annotation was computed. [2022-11-19 06:43:19,421 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 61 90) the Hoare annotation is: true [2022-11-19 06:43:19,422 INFO L902 garLoopResultBuilder]: At program point L86(lines 61 90) the Hoare annotation is: true [2022-11-19 06:43:19,422 INFO L899 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2022-11-19 06:43:19,422 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 79) no Hoare annotation was computed. [2022-11-19 06:43:19,422 INFO L902 garLoopResultBuilder]: At program point L75-1(lines 75 79) the Hoare annotation is: true [2022-11-19 06:43:19,422 INFO L902 garLoopResultBuilder]: At program point L71-2(lines 71 85) the Hoare annotation is: true [2022-11-19 06:43:19,423 INFO L902 garLoopResultBuilder]: At program point L67(line 67) the Hoare annotation is: true [2022-11-19 06:43:19,423 INFO L899 garLoopResultBuilder]: For program point L67-1(line 67) no Hoare annotation was computed. [2022-11-19 06:43:19,423 INFO L895 garLoopResultBuilder]: At program point L151(lines 151 158) the Hoare annotation is: (and (or (= ~pumpRunning~0 0) (not (= |old(~waterLevel~0)| 1))) (= |ULTIMATE.start_main_~tmp~0#1| 1) (= ~waterLevel~0 1) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) [2022-11-19 06:43:19,423 INFO L899 garLoopResultBuilder]: For program point L597(lines 597 603) no Hoare annotation was computed. [2022-11-19 06:43:19,424 INFO L902 garLoopResultBuilder]: At program point L151-2(lines 151 158) the Hoare annotation is: true [2022-11-19 06:43:19,424 INFO L895 garLoopResultBuilder]: At program point L597-1(lines 597 603) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= |ULTIMATE.start_main_~tmp~0#1| 1) .cse0 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0) (and (not (= ~pumpRunning~0 0)) .cse0) (and .cse0 (= 0 ~systemActive~0)))) [2022-11-19 06:43:19,424 INFO L895 garLoopResultBuilder]: At program point L622(lines 577 624) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= |ULTIMATE.start_main_~tmp~0#1| 1) .cse0 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0) (and (not (= ~pumpRunning~0 0)) .cse0) (and .cse0 (= 0 ~systemActive~0)))) [2022-11-19 06:43:19,424 INFO L895 garLoopResultBuilder]: At program point L589(line 589) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0) (and (not (= ~pumpRunning~0 0)) .cse0) (and .cse0 (= ~waterLevel~0 1)) (and .cse0 (= 0 ~systemActive~0)))) [2022-11-19 06:43:19,424 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-19 06:43:19,425 INFO L899 garLoopResultBuilder]: For program point L578(lines 577 624) no Hoare annotation was computed. [2022-11-19 06:43:19,425 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 06:43:19,425 INFO L895 garLoopResultBuilder]: At program point L599(line 599) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= |ULTIMATE.start_main_~tmp~0#1| 1) .cse0 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0) (and (not (= ~pumpRunning~0 0)) .cse0) (and .cse0 (= 0 ~systemActive~0)))) [2022-11-19 06:43:19,425 INFO L902 garLoopResultBuilder]: At program point L628(lines 567 632) the Hoare annotation is: true [2022-11-19 06:43:19,425 INFO L899 garLoopResultBuilder]: For program point L587(lines 587 593) no Hoare annotation was computed. [2022-11-19 06:43:19,425 INFO L899 garLoopResultBuilder]: For program point L587-1(lines 587 593) no Hoare annotation was computed. [2022-11-19 06:43:19,425 INFO L895 garLoopResultBuilder]: At program point L625(lines 576 626) the Hoare annotation is: false [2022-11-19 06:43:19,426 INFO L895 garLoopResultBuilder]: At program point L613-2(lines 607 620) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (or (not (= ~pumpRunning~0 0)) (= 0 ~systemActive~0)) .cse0) (and (= |ULTIMATE.start_main_~tmp~0#1| 1) .cse0 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0))) [2022-11-19 06:43:19,426 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 653 664) no Hoare annotation was computed. [2022-11-19 06:43:19,426 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 653 664) the Hoare annotation is: (let ((.cse0 (= ~waterLevel~0 1)) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse0) (or (= 2 ~waterLevel~0) (not (= |old(~waterLevel~0)| 2))) (or .cse1 .cse0 (not (= 0 ~systemActive~0))) (or (= ~pumpRunning~0 0) .cse1))) [2022-11-19 06:43:19,426 INFO L899 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 828 836) no Hoare annotation was computed. [2022-11-19 06:43:19,427 INFO L902 garLoopResultBuilder]: At program point isPumpRunningENTRY(lines 828 836) the Hoare annotation is: true [2022-11-19 06:43:19,430 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:43:19,433 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:43:19,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:43:19 BoogieIcfgContainer [2022-11-19 06:43:19,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:43:19,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:43:19,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:43:19,466 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:43:19,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:35" (3/4) ... [2022-11-19 06:43:19,470 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:43:19,477 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-19 06:43:19,477 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-19 06:43:19,477 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-19 06:43:19,477 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-19 06:43:19,478 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-19 06:43:19,478 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2022-11-19 06:43:19,487 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2022-11-19 06:43:19,487 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-19 06:43:19,488 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-19 06:43:19,488 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:43:19,489 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:43:19,518 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((pumpRunning == 0 || !(\old(waterLevel) == 1)) && tmp == 1) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS [2022-11-19 06:43:19,519 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(waterLevel) == 1) || (pumpRunning == aux-isPumpRunning()-aux && waterLevel == 1)) && (!(\old(waterLevel) == 2) || (pumpRunning == aux-isPumpRunning()-aux && \old(waterLevel) == waterLevel))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || (((!(pumpRunning == 0) || 0 == systemActive) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel))) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) == 2)) [2022-11-19 06:43:19,520 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || (0 == systemActive && pumpRunning == switchedOnBeforeTS)) && (((!(\old(pumpRunning) == 0) || (!(pumpRunning == 0) && 2 == waterLevel)) || !(\old(waterLevel) == 2)) || (0 == systemActive && pumpRunning == switchedOnBeforeTS))) && (((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || tmp == 1) || !(\old(waterLevel) == 2)) || (0 == systemActive && pumpRunning == switchedOnBeforeTS))) && ((((!(pumpRunning == 0) && waterLevel == 1) || (2 == waterLevel && 0 == systemActive)) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2))) && (((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 1)) || (((pumpRunning == 0 && tmp == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS)) || ((!(pumpRunning == 0) || waterLevel == 1) && 0 == systemActive)) [2022-11-19 06:43:19,521 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(pumpRunning == 0) && tmp == waterLevel) && (!(\old(waterLevel) == 1) || waterLevel == 0)) || \old(pumpRunning) == 0) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || tmp == 2) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((((!(\old(waterLevel) == 1) && tmp == waterLevel) && (!(pumpRunning == 0) || 2 == waterLevel)) && (\old(waterLevel) == waterLevel || waterLevel == 1)) || (((!(\old(waterLevel) == 1) && (!(pumpRunning == 0) || 2 == waterLevel)) && 0 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1))) || !(\old(waterLevel) == 2))) && (((!(\old(waterLevel) == 1) || ((!(pumpRunning == 0) && tmp == waterLevel) && (!(\old(waterLevel) == 1) || waterLevel == 0))) || ((((tmp <= 0 && 0 < tmp + 1) && pumpRunning == 0) && tmp == waterLevel) && waterLevel == 1)) || ((!(pumpRunning == 0) || waterLevel == 1) && 0 == systemActive))) && (((\old(pumpRunning) == 0 || !(\old(waterLevel) == 2)) || 0 == systemActive) || waterLevel == 1) [2022-11-19 06:43:19,521 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((pumpRunning == 0 || !(\old(waterLevel) == 2)) || waterLevel == 1) && ((!(pumpRunning == 0) && pumpRunning == switchedOnBeforeTS) || \old(pumpRunning) == 0)) && ((((!(pumpRunning == 0) || \old(waterLevel) == waterLevel) && (pumpRunning == 0 || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 1))) && ((!(\old(pumpRunning) == 0) || (2 == waterLevel && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) == 2))) && !(0 == systemActive) [2022-11-19 06:43:19,521 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(waterLevel) == 1) && \old(pumpRunning) == 0) && !(\old(waterLevel) == 2)) && !(0 == systemActive) [2022-11-19 06:43:19,522 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || 2 == waterLevel) || !(\old(waterLevel) == 2)) && (((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || \old(pumpRunning) == 0)) && ((\old(pumpRunning) == 0 || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || (tmp == 1 && !(pumpRunning == 0))) || !(\old(waterLevel) == 2))) && ((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 1)) || (((pumpRunning == 0 && tmp == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS))) && !(0 == systemActive) [2022-11-19 06:43:19,524 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(pumpRunning) == 0 && (((pumpRunning == 0 && 2 == waterLevel) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 2))) && (tmp == 1 || !(\old(waterLevel) == 2))) && (!(\old(waterLevel) == 1) || (((pumpRunning == 0 && tmp == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS))) && !(0 == systemActive) [2022-11-19 06:43:19,552 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:43:19,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:43:19,553 INFO L158 Benchmark]: Toolchain (without parser) took 46348.06ms. Allocated memory was 104.9MB in the beginning and 507.5MB in the end (delta: 402.7MB). Free memory was 75.1MB in the beginning and 302.6MB in the end (delta: -227.6MB). Peak memory consumption was 174.4MB. Max. memory is 16.1GB. [2022-11-19 06:43:19,554 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 104.9MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:43:19,554 INFO L158 Benchmark]: CACSL2BoogieTranslator took 788.71ms. Allocated memory is still 104.9MB. Free memory was 74.8MB in the beginning and 71.6MB in the end (delta: 3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 06:43:19,554 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.58ms. Allocated memory is still 104.9MB. Free memory was 71.6MB in the beginning and 69.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:43:19,555 INFO L158 Benchmark]: Boogie Preprocessor took 69.75ms. Allocated memory is still 104.9MB. Free memory was 69.5MB in the beginning and 67.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:43:19,555 INFO L158 Benchmark]: RCFGBuilder took 882.99ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 67.8MB in the beginning and 105.9MB in the end (delta: -38.2MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2022-11-19 06:43:19,556 INFO L158 Benchmark]: TraceAbstraction took 44423.72ms. Allocated memory was 136.3MB in the beginning and 507.5MB in the end (delta: 371.2MB). Free memory was 105.3MB in the beginning and 307.9MB in the end (delta: -202.6MB). Peak memory consumption was 302.7MB. Max. memory is 16.1GB. [2022-11-19 06:43:19,556 INFO L158 Benchmark]: Witness Printer took 86.78ms. Allocated memory is still 507.5MB. Free memory was 307.9MB in the beginning and 302.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 06:43:19,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 104.9MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 788.71ms. Allocated memory is still 104.9MB. Free memory was 74.8MB in the beginning and 71.6MB in the end (delta: 3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.58ms. Allocated memory is still 104.9MB. Free memory was 71.6MB in the beginning and 69.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.75ms. Allocated memory is still 104.9MB. Free memory was 69.5MB in the beginning and 67.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 882.99ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 67.8MB in the beginning and 105.9MB in the end (delta: -38.2MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * TraceAbstraction took 44423.72ms. Allocated memory was 136.3MB in the beginning and 507.5MB in the end (delta: 371.2MB). Free memory was 105.3MB in the beginning and 307.9MB in the end (delta: -202.6MB). Peak memory consumption was 302.7MB. Max. memory is 16.1GB. * Witness Printer took 86.78ms. Allocated memory is still 507.5MB. Free memory was 307.9MB in the beginning and 302.6MB in the end (delta: 5.2MB). 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: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44.3s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 768 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 749 mSDsluCounter, 1637 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1106 mSDsCounter, 299 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1480 IncrementalHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 299 mSolverCounterUnsat, 531 mSDtfsCounter, 1480 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 443 GetRequests, 294 SyntacticMatches, 4 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 16.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=8, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 233 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 31 LocationsWithAnnotation, 569 PreInvPairs, 791 NumberOfFragments, 1206 HoareAnnotationTreeSize, 569 FomulaSimplifications, 18876 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 31 FomulaSimplificationsInter, 25580 FormulaSimplificationTreeSizeReductionInter, 3.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 492 NumberOfCodeBlocks, 492 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 588 ConstructedInterpolants, 0 QuantifiedInterpolants, 1565 SizeOfPredicates, 27 NumberOfNonLiveVariables, 569 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 206/237 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: 927]: Loop Invariant Derived loop invariant: (((((((!(pumpRunning == 0) && tmp == waterLevel) && (!(\old(waterLevel) == 1) || waterLevel == 0)) || \old(pumpRunning) == 0) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || tmp == 2) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((((!(\old(waterLevel) == 1) && tmp == waterLevel) && (!(pumpRunning == 0) || 2 == waterLevel)) && (\old(waterLevel) == waterLevel || waterLevel == 1)) || (((!(\old(waterLevel) == 1) && (!(pumpRunning == 0) || 2 == waterLevel)) && 0 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1))) || !(\old(waterLevel) == 2))) && (((!(\old(waterLevel) == 1) || ((!(pumpRunning == 0) && tmp == waterLevel) && (!(\old(waterLevel) == 1) || waterLevel == 0))) || ((((tmp <= 0 && 0 < tmp + 1) && pumpRunning == 0) && tmp == waterLevel) && waterLevel == 1)) || ((!(pumpRunning == 0) || waterLevel == 1) && 0 == systemActive))) && (((\old(pumpRunning) == 0 || !(\old(waterLevel) == 2)) || 0 == systemActive) || waterLevel == 1) - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: ((!(\old(waterLevel) == 1) && \old(pumpRunning) == 0) && !(\old(waterLevel) == 2)) && !(0 == systemActive) - InvariantResult [Line: 784]: Loop Invariant Derived loop invariant: (((\old(pumpRunning) == 0 && (((pumpRunning == 0 && 2 == waterLevel) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 2))) && (tmp == 1 || !(\old(waterLevel) == 2))) && (!(\old(waterLevel) == 1) || (((pumpRunning == 0 && tmp == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS))) && !(0 == systemActive) - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 776]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || 2 == waterLevel) || !(\old(waterLevel) == 2)) && (((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || \old(pumpRunning) == 0)) && ((\old(pumpRunning) == 0 || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || (tmp == 1 && !(pumpRunning == 0))) || !(\old(waterLevel) == 2))) && ((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 1)) || (((pumpRunning == 0 && tmp == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS))) && !(0 == systemActive) - InvariantResult [Line: 151]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 780]: Loop Invariant Derived loop invariant: (((((pumpRunning == 0 || !(\old(waterLevel) == 2)) || waterLevel == 1) && ((!(pumpRunning == 0) && pumpRunning == switchedOnBeforeTS) || \old(pumpRunning) == 0)) && ((((!(pumpRunning == 0) || \old(waterLevel) == waterLevel) && (pumpRunning == 0 || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 1))) && ((!(\old(pumpRunning) == 0) || (2 == waterLevel && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) == 2))) && !(0 == systemActive) - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 577]: Loop Invariant Derived loop invariant: ((((tmp == 1 && splverifierCounter == 0) && waterLevel == 1) || (2 == waterLevel && splverifierCounter == 0)) || (!(pumpRunning == 0) && splverifierCounter == 0)) || (splverifierCounter == 0 && 0 == systemActive) - InvariantResult [Line: 922]: Loop Invariant Derived loop invariant: (((!(\old(waterLevel) == 1) || (pumpRunning == aux-isPumpRunning()-aux && waterLevel == 1)) && (!(\old(waterLevel) == 2) || (pumpRunning == aux-isPumpRunning()-aux && \old(waterLevel) == waterLevel))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || (((!(pumpRunning == 0) || 0 == systemActive) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel))) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) == 2)) - InvariantResult [Line: 597]: Loop Invariant Derived loop invariant: ((((tmp == 1 && splverifierCounter == 0) && waterLevel == 1) || (2 == waterLevel && splverifierCounter == 0)) || (!(pumpRunning == 0) && splverifierCounter == 0)) || (splverifierCounter == 0 && 0 == systemActive) - InvariantResult [Line: 151]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 || !(\old(waterLevel) == 1)) && tmp == 1) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS - InvariantResult [Line: 567]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 755]: Loop Invariant Derived loop invariant: (((((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || (0 == systemActive && pumpRunning == switchedOnBeforeTS)) && (((!(\old(pumpRunning) == 0) || (!(pumpRunning == 0) && 2 == waterLevel)) || !(\old(waterLevel) == 2)) || (0 == systemActive && pumpRunning == switchedOnBeforeTS))) && (((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || tmp == 1) || !(\old(waterLevel) == 2)) || (0 == systemActive && pumpRunning == switchedOnBeforeTS))) && ((((!(pumpRunning == 0) && waterLevel == 1) || (2 == waterLevel && 0 == systemActive)) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2))) && (((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 1)) || (((pumpRunning == 0 && tmp == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS)) || ((!(pumpRunning == 0) || waterLevel == 1) && 0 == systemActive)) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-19 06:43:19,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c318ba3-1305-4bd4-bd40-8cf7673aaeea/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE