./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/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_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/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_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/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 471ad46a1662a2ee36763023473e29e175f1086d40bbf36d792af661871bf09e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:10:56,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:10:56,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:10:56,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:10:56,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:10:56,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:10:56,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:10:56,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:10:56,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:10:56,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:10:56,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:10:56,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:10:56,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:10:56,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:10:56,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:10:56,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:10:56,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:10:56,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:10:56,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:10:56,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:10:56,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:10:56,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:10:56,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:10:56,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:10:56,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:10:56,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:10:56,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:10:56,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:10:56,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:10:56,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:10:56,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:10:56,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:10:56,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:10:56,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:10:56,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:10:56,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:10:56,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:10:56,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:10:56,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:10:56,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:10:56,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:10:56,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:10:56,882 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:10:56,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:10:56,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:10:56,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:10:56,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:10:56,890 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:10:56,890 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:10:56,890 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:10:56,891 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:10:56,891 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:10:56,892 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:10:56,893 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:10:56,893 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:10:56,893 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:10:56,893 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:10:56,894 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:10:56,894 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:10:56,894 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:10:56,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:10:56,896 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:10:56,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:10:56,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:10:56,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:10:56,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:10:56,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:10:56,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:10:56,899 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:10:56,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:10:56,900 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:10:56,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:10:56,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:10:56,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:10:56,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:10:56,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:10:56,902 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:10:56,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:10:56,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:10:56,903 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:10:56,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:10:56,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:10:56,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:10:56,904 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_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 471ad46a1662a2ee36763023473e29e175f1086d40bbf36d792af661871bf09e [2022-11-19 08:10:57,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:10:57,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:10:57,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:10:57,297 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:10:57,298 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:10:57,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c [2022-11-19 08:10:57,404 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/data/06fa8bfcc/b17fe013cc5f488cb6762f9c950598df/FLAG74249b262 [2022-11-19 08:10:58,112 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:10:58,113 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c [2022-11-19 08:10:58,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/data/06fa8bfcc/b17fe013cc5f488cb6762f9c950598df/FLAG74249b262 [2022-11-19 08:10:58,403 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/data/06fa8bfcc/b17fe013cc5f488cb6762f9c950598df [2022-11-19 08:10:58,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:10:58,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:10:58,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:10:58,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:10:58,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:10:58,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:10:58" (1/1) ... [2022-11-19 08:10:58,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a883fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:58, skipping insertion in model container [2022-11-19 08:10:58,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:10:58" (1/1) ... [2022-11-19 08:10:58,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:10:58,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:10:58,731 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_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c[1605,1618] [2022-11-19 08:10:58,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:10:58,978 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:10:59,009 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_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c[1605,1618] [2022-11-19 08:10:59,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:10:59,101 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:10:59,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:59 WrapperNode [2022-11-19 08:10:59,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:10:59,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:10:59,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:10:59,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:10:59,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:59" (1/1) ... [2022-11-19 08:10:59,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:59" (1/1) ... [2022-11-19 08:10:59,180 INFO L138 Inliner]: procedures = 56, calls = 99, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 196 [2022-11-19 08:10:59,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:10:59,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:10:59,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:10:59,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:10:59,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:59" (1/1) ... [2022-11-19 08:10:59,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:59" (1/1) ... [2022-11-19 08:10:59,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:59" (1/1) ... [2022-11-19 08:10:59,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:59" (1/1) ... [2022-11-19 08:10:59,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:59" (1/1) ... [2022-11-19 08:10:59,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:59" (1/1) ... [2022-11-19 08:10:59,211 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:59" (1/1) ... [2022-11-19 08:10:59,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:59" (1/1) ... [2022-11-19 08:10:59,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:10:59,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:10:59,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:10:59,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:10:59,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:59" (1/1) ... [2022-11-19 08:10:59,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:10:59,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:10:59,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:10:59,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:10:59,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:10:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-19 08:10:59,310 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-19 08:10:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-19 08:10:59,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-19 08:10:59,311 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 08:10:59,311 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 08:10:59,311 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 08:10:59,312 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 08:10:59,312 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-19 08:10:59,312 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-19 08:10:59,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:10:59,313 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-19 08:10:59,313 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-19 08:10:59,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:10:59,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:10:59,415 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:10:59,417 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:10:59,811 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:11:00,110 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:11:00,110 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 08:11:00,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:11:00 BoogieIcfgContainer [2022-11-19 08:11:00,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:11:00,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:11:00,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:11:00,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:11:00,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:10:58" (1/3) ... [2022-11-19 08:11:00,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af0aac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:11:00, skipping insertion in model container [2022-11-19 08:11:00,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:59" (2/3) ... [2022-11-19 08:11:00,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af0aac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:11:00, skipping insertion in model container [2022-11-19 08:11:00,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:11:00" (3/3) ... [2022-11-19 08:11:00,125 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product44.cil.c [2022-11-19 08:11:00,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:11:00,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:11:00,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:11:00,262 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;@65060baa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:11:00,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:11:00,270 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 08:11:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 08:11:00,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:00,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:00,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:00,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:00,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2123599393, now seen corresponding path program 1 times [2022-11-19 08:11:00,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:00,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219750374] [2022-11-19 08:11:00,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:00,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:11:00,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:00,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219750374] [2022-11-19 08:11:00,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219750374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:00,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:00,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:11:00,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422720113] [2022-11-19 08:11:00,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:00,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:11:00,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:00,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:11:00,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:11:00,691 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:11:00,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:00,821 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-11-19 08:11:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:11:00,825 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-19 08:11:00,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:00,836 INFO L225 Difference]: With dead ends: 100 [2022-11-19 08:11:00,836 INFO L226 Difference]: Without dead ends: 46 [2022-11-19 08:11:00,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:11:00,847 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:00,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:11:00,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-19 08:11:00,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-19 08:11:00,915 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 08:11:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-11-19 08:11:00,920 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 17 [2022-11-19 08:11:00,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:00,921 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-11-19 08:11:00,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:11:00,922 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-11-19 08:11:00,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 08:11:00,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:00,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:00,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:11:00,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:00,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash 564005331, now seen corresponding path program 1 times [2022-11-19 08:11:00,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:00,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076095706] [2022-11-19 08:11:00,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:00,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:11:01,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:01,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076095706] [2022-11-19 08:11:01,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076095706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:01,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:01,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:11:01,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896112517] [2022-11-19 08:11:01,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:01,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:11:01,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:01,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:11:01,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:01,063 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:11:01,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:01,121 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2022-11-19 08:11:01,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:11:01,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-19 08:11:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:01,124 INFO L225 Difference]: With dead ends: 69 [2022-11-19 08:11:01,124 INFO L226 Difference]: Without dead ends: 38 [2022-11-19 08:11:01,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:01,127 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 08:11:01,128 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 08:11:01,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-19 08:11:01,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-19 08:11:01,136 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 08:11:01,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-11-19 08:11:01,137 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 18 [2022-11-19 08:11:01,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:01,138 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-11-19 08:11:01,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:11:01,139 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-11-19 08:11:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 08:11:01,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:01,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:01,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:11:01,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:01,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:01,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1601632795, now seen corresponding path program 1 times [2022-11-19 08:11:01,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:01,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344623057] [2022-11-19 08:11:01,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:01,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:11:01,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:01,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344623057] [2022-11-19 08:11:01,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344623057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:01,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:01,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 08:11:01,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121423591] [2022-11-19 08:11:01,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:01,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:11:01,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:01,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:11:01,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:11:01,346 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:11:01,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:01,604 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2022-11-19 08:11:01,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:11:01,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-19 08:11:01,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:01,609 INFO L225 Difference]: With dead ends: 107 [2022-11-19 08:11:01,611 INFO L226 Difference]: Without dead ends: 71 [2022-11-19 08:11:01,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:11:01,616 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 27 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:01,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 175 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:11:01,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-19 08:11:01,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2022-11-19 08:11:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 52 states have internal predecessors, (57), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:11:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2022-11-19 08:11:01,656 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 20 [2022-11-19 08:11:01,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:01,658 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2022-11-19 08:11:01,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:11:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2022-11-19 08:11:01,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 08:11:01,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:01,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:01,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:11:01,663 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:01,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash 454893748, now seen corresponding path program 1 times [2022-11-19 08:11:01,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:01,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701335082] [2022-11-19 08:11:01,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:01,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:11:01,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:01,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701335082] [2022-11-19 08:11:01,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701335082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:01,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:01,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:11:01,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41932914] [2022-11-19 08:11:01,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:01,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:11:01,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:01,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:11:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:01,857 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:11:01,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:01,924 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2022-11-19 08:11:01,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:11:01,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-19 08:11:01,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:01,927 INFO L225 Difference]: With dead ends: 103 [2022-11-19 08:11:01,928 INFO L226 Difference]: Without dead ends: 101 [2022-11-19 08:11:01,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:01,931 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:01,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 73 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:11:01,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-19 08:11:01,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-19 08:11:01,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 66 states have (on average 1.303030303030303) internal successors, (86), 78 states have internal predecessors, (86), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (22), 17 states have call predecessors, (22), 20 states have call successors, (22) [2022-11-19 08:11:01,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2022-11-19 08:11:01,970 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 23 [2022-11-19 08:11:01,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:01,971 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2022-11-19 08:11:01,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:11:01,971 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2022-11-19 08:11:01,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-19 08:11:01,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:01,974 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 08:11:01,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:11:01,974 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:01,975 INFO L85 PathProgramCache]: Analyzing trace with hash -228366804, now seen corresponding path program 1 times [2022-11-19 08:11:01,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:01,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666330164] [2022-11-19 08:11:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:01,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:11:02,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:02,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666330164] [2022-11-19 08:11:02,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666330164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:02,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:02,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 08:11:02,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120961865] [2022-11-19 08:11:02,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:02,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 08:11:02,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:02,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 08:11:02,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:11:02,750 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 08:11:03,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:03,428 INFO L93 Difference]: Finished difference Result 317 states and 406 transitions. [2022-11-19 08:11:03,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 08:11:03,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 42 [2022-11-19 08:11:03,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:03,445 INFO L225 Difference]: With dead ends: 317 [2022-11-19 08:11:03,446 INFO L226 Difference]: Without dead ends: 247 [2022-11-19 08:11:03,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-11-19 08:11:03,458 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 126 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:03,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 142 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 08:11:03,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-19 08:11:03,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 219. [2022-11-19 08:11:03,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 147 states have (on average 1.272108843537415) internal successors, (187), 166 states have internal predecessors, (187), 36 states have call successors, (36), 30 states have call predecessors, (36), 35 states have return successors, (58), 33 states have call predecessors, (58), 36 states have call successors, (58) [2022-11-19 08:11:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 281 transitions. [2022-11-19 08:11:03,556 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 281 transitions. Word has length 42 [2022-11-19 08:11:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:03,557 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 281 transitions. [2022-11-19 08:11:03,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 08:11:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 281 transitions. [2022-11-19 08:11:03,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-19 08:11:03,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:03,568 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] [2022-11-19 08:11:03,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:11:03,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:03,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:03,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1439576305, now seen corresponding path program 1 times [2022-11-19 08:11:03,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:03,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730836951] [2022-11-19 08:11:03,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:03,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:04,102 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 08:11:04,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:04,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730836951] [2022-11-19 08:11:04,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730836951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:04,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:04,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 08:11:04,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977637055] [2022-11-19 08:11:04,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:04,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:11:04,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:04,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:11:04,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:11:04,108 INFO L87 Difference]: Start difference. First operand 219 states and 281 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-19 08:11:04,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:04,432 INFO L93 Difference]: Finished difference Result 510 states and 669 transitions. [2022-11-19 08:11:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:11:04,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2022-11-19 08:11:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:04,437 INFO L225 Difference]: With dead ends: 510 [2022-11-19 08:11:04,437 INFO L226 Difference]: Without dead ends: 293 [2022-11-19 08:11:04,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:11:04,441 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 76 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:04,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 158 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:11:04,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-11-19 08:11:04,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 237. [2022-11-19 08:11:04,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 158 states have (on average 1.2658227848101267) internal successors, (200), 178 states have internal predecessors, (200), 39 states have call successors, (39), 34 states have call predecessors, (39), 39 states have return successors, (64), 34 states have call predecessors, (64), 39 states have call successors, (64) [2022-11-19 08:11:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 303 transitions. [2022-11-19 08:11:04,503 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 303 transitions. Word has length 49 [2022-11-19 08:11:04,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:04,504 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 303 transitions. [2022-11-19 08:11:04,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-19 08:11:04,504 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 303 transitions. [2022-11-19 08:11:04,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-19 08:11:04,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:04,508 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:04,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:11:04,509 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:04,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:04,509 INFO L85 PathProgramCache]: Analyzing trace with hash 172599243, now seen corresponding path program 1 times [2022-11-19 08:11:04,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:04,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310369169] [2022-11-19 08:11:04,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:04,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:11:04,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:04,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310369169] [2022-11-19 08:11:04,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310369169] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:11:04,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973146055] [2022-11-19 08:11:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:04,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:11:04,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:11:04,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:11:04,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:11:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:05,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-19 08:11:05,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:11:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:11:05,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:11:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:11:05,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973146055] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:11:05,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [959986930] [2022-11-19 08:11:05,946 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-19 08:11:05,946 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:11:05,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:11:05,957 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:11:05,958 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:11:10,880 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 40 for LOIs [2022-11-19 08:11:10,889 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 30 for LOIs [2022-11-19 08:11:11,188 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 49 for LOIs [2022-11-19 08:11:11,202 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 24 for LOIs [2022-11-19 08:11:11,207 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:11:16,360 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3394#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1|) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483648)) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= 0 ~methAndRunningLastTime~0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 2147483647) (<= 0 |old(~methAndRunningLastTime~0)|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 0)) (= ~head~0.base 0) (<= 0 |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1|) (= |#NULL.offset| 0) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| ~methaneLevelCritical~0) (not (= ~methAndRunningLastTime~0 0)) (<= 0 |#StackHeapBarrier|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 0)) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 08:11:16,361 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:11:16,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:11:16,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 24 [2022-11-19 08:11:16,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18357937] [2022-11-19 08:11:16,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:11:16,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 08:11:16,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:16,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 08:11:16,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=2389, Unknown=0, NotChecked=0, Total=2652 [2022-11-19 08:11:16,365 INFO L87 Difference]: Start difference. First operand 237 states and 303 transitions. Second operand has 24 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 7 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-19 08:11:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:18,986 INFO L93 Difference]: Finished difference Result 781 states and 1052 transitions. [2022-11-19 08:11:18,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-19 08:11:18,987 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 7 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) Word has length 52 [2022-11-19 08:11:18,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:18,992 INFO L225 Difference]: With dead ends: 781 [2022-11-19 08:11:18,992 INFO L226 Difference]: Without dead ends: 558 [2022-11-19 08:11:18,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2323 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=681, Invalid=6291, Unknown=0, NotChecked=0, Total=6972 [2022-11-19 08:11:18,998 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 591 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:18,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 327 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-19 08:11:19,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-11-19 08:11:19,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 445. [2022-11-19 08:11:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 297 states have (on average 1.2188552188552189) internal successors, (362), 331 states have internal predecessors, (362), 69 states have call successors, (69), 67 states have call predecessors, (69), 78 states have return successors, (115), 67 states have call predecessors, (115), 69 states have call successors, (115) [2022-11-19 08:11:19,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 546 transitions. [2022-11-19 08:11:19,124 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 546 transitions. Word has length 52 [2022-11-19 08:11:19,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:19,125 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 546 transitions. [2022-11-19 08:11:19,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 7 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-19 08:11:19,125 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 546 transitions. [2022-11-19 08:11:19,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-19 08:11:19,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:19,135 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 08:11:19,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:11:19,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 08:11:19,343 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:19,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:19,344 INFO L85 PathProgramCache]: Analyzing trace with hash -830310142, now seen corresponding path program 1 times [2022-11-19 08:11:19,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:19,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389905400] [2022-11-19 08:11:19,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:19,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 08:11:20,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:20,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389905400] [2022-11-19 08:11:20,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389905400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:11:20,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116871905] [2022-11-19 08:11:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:20,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:11:20,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:11:20,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:11:20,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:11:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:20,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-19 08:11:20,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:11:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:11:20,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:11:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 08:11:20,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116871905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:11:20,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1703349028] [2022-11-19 08:11:20,806 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-19 08:11:20,806 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:11:20,807 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:11:20,807 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:11:20,807 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:11:24,563 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 39 for LOIs [2022-11-19 08:11:24,574 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 30 for LOIs [2022-11-19 08:11:24,885 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 49 for LOIs [2022-11-19 08:11:24,897 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 24 for LOIs [2022-11-19 08:11:24,901 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:11:29,945 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5800#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1|) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483648)) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= 0 ~methAndRunningLastTime~0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 2147483647) (<= 0 |old(~methAndRunningLastTime~0)|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 0)) (= ~head~0.base 0) (<= 0 |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1|) (= |#NULL.offset| 0) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| ~methaneLevelCritical~0) (not (= ~methAndRunningLastTime~0 0)) (<= 0 |#StackHeapBarrier|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 0)) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 08:11:29,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:11:29,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:11:29,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 8] total 20 [2022-11-19 08:11:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984053590] [2022-11-19 08:11:29,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:11:29,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 08:11:29,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 08:11:29,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2018, Unknown=0, NotChecked=0, Total=2256 [2022-11-19 08:11:29,950 INFO L87 Difference]: Start difference. First operand 445 states and 546 transitions. Second operand has 20 states, 18 states have (on average 4.722222222222222) internal successors, (85), 19 states have internal predecessors, (85), 9 states have call successors, (20), 6 states have call predecessors, (20), 8 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-19 08:11:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:32,674 INFO L93 Difference]: Finished difference Result 1031 states and 1310 transitions. [2022-11-19 08:11:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-19 08:11:32,675 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.722222222222222) internal successors, (85), 19 states have internal predecessors, (85), 9 states have call successors, (20), 6 states have call predecessors, (20), 8 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 69 [2022-11-19 08:11:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:32,687 INFO L225 Difference]: With dead ends: 1031 [2022-11-19 08:11:32,688 INFO L226 Difference]: Without dead ends: 600 [2022-11-19 08:11:32,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 184 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3095 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=787, Invalid=7955, Unknown=0, NotChecked=0, Total=8742 [2022-11-19 08:11:32,694 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 475 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:32,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 653 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 08:11:32,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-11-19 08:11:32,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 498. [2022-11-19 08:11:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 333 states have (on average 1.2222222222222223) internal successors, (407), 369 states have internal predecessors, (407), 80 states have call successors, (80), 78 states have call predecessors, (80), 84 states have return successors, (136), 77 states have call predecessors, (136), 80 states have call successors, (136) [2022-11-19 08:11:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 623 transitions. [2022-11-19 08:11:32,820 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 623 transitions. Word has length 69 [2022-11-19 08:11:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:32,821 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 623 transitions. [2022-11-19 08:11:32,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.722222222222222) internal successors, (85), 19 states have internal predecessors, (85), 9 states have call successors, (20), 6 states have call predecessors, (20), 8 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-19 08:11:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 623 transitions. [2022-11-19 08:11:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-19 08:11:32,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:32,828 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:32,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:11:33,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:11:33,036 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:33,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:33,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1150154572, now seen corresponding path program 1 times [2022-11-19 08:11:33,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:33,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587254604] [2022-11-19 08:11:33,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:33,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:11:33,065 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:11:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:11:33,127 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:11:33,127 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:11:33,129 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:11:33,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:11:33,135 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:33,140 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:11:33,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:11:33 BoogieIcfgContainer [2022-11-19 08:11:33,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:11:33,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:11:33,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:11:33,240 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:11:33,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:11:00" (3/4) ... [2022-11-19 08:11:33,242 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 08:11:33,338 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:11:33,338 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:11:33,339 INFO L158 Benchmark]: Toolchain (without parser) took 34931.48ms. Allocated memory was 127.9MB in the beginning and 423.6MB in the end (delta: 295.7MB). Free memory was 93.8MB in the beginning and 294.3MB in the end (delta: -200.5MB). Peak memory consumption was 94.7MB. Max. memory is 16.1GB. [2022-11-19 08:11:33,339 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 88.1MB. Free memory was 62.3MB in the beginning and 62.2MB in the end (delta: 29.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:11:33,340 INFO L158 Benchmark]: CACSL2BoogieTranslator took 690.33ms. Allocated memory is still 127.9MB. Free memory was 93.8MB in the beginning and 97.3MB in the end (delta: -3.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 08:11:33,340 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.94ms. Allocated memory is still 127.9MB. Free memory was 97.3MB in the beginning and 95.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:11:33,341 INFO L158 Benchmark]: Boogie Preprocessor took 33.74ms. Allocated memory is still 127.9MB. Free memory was 95.3MB in the beginning and 94.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:11:33,341 INFO L158 Benchmark]: RCFGBuilder took 897.84ms. Allocated memory is still 127.9MB. Free memory was 93.9MB in the beginning and 68.8MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-19 08:11:33,342 INFO L158 Benchmark]: TraceAbstraction took 33122.16ms. Allocated memory was 127.9MB in the beginning and 423.6MB in the end (delta: 295.7MB). Free memory was 68.1MB in the beginning and 301.6MB in the end (delta: -233.6MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2022-11-19 08:11:33,342 INFO L158 Benchmark]: Witness Printer took 99.30ms. Allocated memory is still 423.6MB. Free memory was 301.6MB in the beginning and 294.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 08:11:33,344 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 88.1MB. Free memory was 62.3MB in the beginning and 62.2MB in the end (delta: 29.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 690.33ms. Allocated memory is still 127.9MB. Free memory was 93.8MB in the beginning and 97.3MB in the end (delta: -3.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.94ms. Allocated memory is still 127.9MB. Free memory was 97.3MB in the beginning and 95.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.74ms. Allocated memory is still 127.9MB. Free memory was 95.3MB in the beginning and 94.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 897.84ms. Allocated memory is still 127.9MB. Free memory was 93.9MB in the beginning and 68.8MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 33122.16ms. Allocated memory was 127.9MB in the beginning and 423.6MB in the end (delta: 295.7MB). Free memory was 68.1MB in the beginning and 301.6MB in the end (delta: -233.6MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. * Witness Printer took 99.30ms. Allocated memory is still 423.6MB. Free memory was 301.6MB in the beginning and 294.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 54]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L775] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L472] int methAndRunningLastTime ; [L513] int methaneLevelCritical = 0; [L142] int pumpRunning = 0; [L512] int waterLevel = 1; [L143] int systemActive = 1; [L374] int cleanupTimeShifts = 4; [L449] int retValue_acc ; [L450] int tmp ; [L454] FCALL select_helpers() [L455] FCALL select_features() [L456] CALL, EXPR valid_product() [L365] int retValue_acc ; [L368] retValue_acc = 1 [L369] return (retValue_acc); [L456] RET, EXPR valid_product() [L456] tmp = valid_product() [L458] COND TRUE \read(tmp) [L460] FCALL setup() [L461] CALL runTest() [L442] CALL __utac_acc__Specification2_spec__1() [L477] methAndRunningLastTime = 0 [L442] RET __utac_acc__Specification2_spec__1() [L443] CALL test() [L66] int splverifierCounter ; [L67] int tmp ; [L68] int tmp___0 ; [L69] int tmp___1 ; [L70] int tmp___2 ; [L73] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L75] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L77] COND TRUE splverifierCounter < 4 [L83] tmp = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L87] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] COND TRUE waterLevel < 2 [L531] waterLevel = waterLevel + 1 [L87] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L93] tmp___0 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L103] tmp___2 = __VERIFIER_nondet_int() [L105] COND FALSE !(\read(tmp___2)) [L111] tmp___1 = __VERIFIER_nondet_int() [L113] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L122] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L150] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L157] COND TRUE \read(systemActive) [L159] CALL processEnvironment() [L179] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L182] COND TRUE ! pumpRunning [L184] CALL, EXPR isHighWaterLevel() [L294] int retValue_acc ; [L295] int tmp ; [L296] int tmp___0 ; [L300] CALL, EXPR isHighWaterSensorDry() [L592] int retValue_acc ; [L595] COND FALSE !(waterLevel < 2) [L599] retValue_acc = 0 [L600] return (retValue_acc); [L300] RET, EXPR isHighWaterSensorDry() [L300] tmp = isHighWaterSensorDry() [L302] COND FALSE !(\read(tmp)) [L305] tmp___0 = 1 [L307] retValue_acc = tmp___0 [L308] return (retValue_acc); [L184] RET, EXPR isHighWaterLevel() [L184] tmp = isHighWaterLevel() [L186] COND TRUE \read(tmp) [L188] CALL activatePump() [L213] int tmp ; [L217] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L242] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L217] RET, EXPR isMethaneAlarm() [L217] tmp = isMethaneAlarm() [L219] COND FALSE !(\read(tmp)) [L223] CALL activatePump__wrappee__highWaterSensor() [L207] pumpRunning = 1 [L223] RET activatePump__wrappee__highWaterSensor() [L188] RET activatePump() [L159] RET processEnvironment() [L165] CALL __utac_acc__Specification2_spec__2() [L482] int tmp ; [L483] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L487] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L487] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L487] tmp = isMethaneLevelCritical() [L489] COND FALSE !(\read(tmp)) [L505] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L165] RET __utac_acc__Specification2_spec__2() [L122] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L75] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L77] COND TRUE splverifierCounter < 4 [L83] tmp = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L93] tmp___0 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L97] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L542] COND FALSE !(\read(methaneLevelCritical)) [L545] methaneLevelCritical = 1 [L97] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L103] tmp___2 = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp___2) [L107] CALL startSystem() [L331] systemActive = 1 [L107] RET startSystem() [L122] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L150] COND TRUE \read(pumpRunning) [L152] CALL lowerWaterLevel() [L518] COND TRUE waterLevel > 0 [L519] waterLevel = waterLevel - 1 [L152] RET lowerWaterLevel() [L157] COND TRUE \read(systemActive) [L159] CALL processEnvironment() [L179] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L182] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L197] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L159] RET processEnvironment() [L165] CALL __utac_acc__Specification2_spec__2() [L482] int tmp ; [L483] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L487] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L487] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L487] tmp = isMethaneLevelCritical() [L489] COND TRUE \read(tmp) [L491] CALL, EXPR isPumpRunning() [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); [L491] RET, EXPR isPumpRunning() [L491] tmp___0 = isPumpRunning() [L493] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L494] COND FALSE !(\read(methAndRunningLastTime)) [L499] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L165] RET __utac_acc__Specification2_spec__2() [L122] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=1, waterLevel=1] [L75] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=1, waterLevel=1] [L77] COND TRUE splverifierCounter < 4 [L83] tmp = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=1, waterLevel=1] [L93] tmp___0 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=1, waterLevel=1] [L103] tmp___2 = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp___2) [L107] CALL startSystem() [L331] systemActive = 1 [L107] RET startSystem() [L122] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L150] COND TRUE \read(pumpRunning) [L152] CALL lowerWaterLevel() [L518] COND TRUE waterLevel > 0 [L519] waterLevel = waterLevel - 1 [L152] RET lowerWaterLevel() [L157] COND TRUE \read(systemActive) [L159] CALL processEnvironment() [L179] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L182] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L197] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L159] RET processEnvironment() [L165] CALL __utac_acc__Specification2_spec__2() [L482] int tmp ; [L483] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L487] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L487] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L487] tmp = isMethaneLevelCritical() [L489] COND TRUE \read(tmp) [L491] CALL, EXPR isPumpRunning() [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); [L491] RET, EXPR isPumpRunning() [L491] tmp___0 = isPumpRunning() [L493] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L494] COND TRUE \read(methAndRunningLastTime) [L496] CALL __automaton_fail() [L54] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.9s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1344 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1328 mSDsluCounter, 1638 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1274 mSDsCounter, 738 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3160 IncrementalHoareTripleChecker+Invalid, 3898 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 738 mSolverCounterUnsat, 364 mSDtfsCounter, 3160 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 537 GetRequests, 328 SyntacticMatches, 6 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5448 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=498occurred in iteration=8, InterpolantAutomatonStates: 121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 303 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 520 ConstructedInterpolants, 0 QuantifiedInterpolants, 1783 SizeOfPredicates, 20 NumberOfNonLiveVariables, 609 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 227/266 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 RESULT: Ultimate proved your program to be incorrect! [2022-11-19 08:11:33,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0112d2ba-ba2f-4128-8192-bdae2a1ff3fd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE