./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/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_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/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 64bit --witnessprinter.graph.data.programhash b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df --- 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 07:53:32,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:53:32,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:53:32,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:53:32,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:53:32,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:53:32,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:53:32,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:53:32,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:53:32,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:53:32,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:53:32,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:53:32,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:53:32,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:53:32,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:53:32,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:53:32,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:53:32,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:53:32,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:53:32,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:53:32,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:53:32,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:53:32,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:53:32,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:53:32,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:53:32,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:53:32,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:53:32,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:53:32,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:53:32,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:53:32,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:53:32,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:53:32,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:53:32,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:53:32,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:53:32,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:53:32,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:53:32,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:53:32,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:53:32,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:53:32,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:53:32,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:53:32,627 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:53:32,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:53:32,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:53:32,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:53:32,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:53:32,629 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:53:32,629 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:53:32,629 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:53:32,630 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:53:32,630 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:53:32,630 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:53:32,630 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:53:32,631 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:53:32,631 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:53:32,631 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:53:32,631 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:53:32,632 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:53:32,632 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:53:32,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:53:32,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:53:32,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:53:32,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:53:32,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:53:32,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:53:32,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:53:32,634 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:53:32,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:53:32,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:53:32,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:53:32,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:53:32,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:53:32,640 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:53:32,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:53:32,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:53:32,641 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:53:32,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:53:32,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:53:32,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:53:32,642 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_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df [2022-11-19 07:53:32,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:53:32,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:53:32,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:53:32,976 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:53:32,977 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:53:32,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-11-19 07:53:33,042 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/bin/utaipan-I9t0OCRTmS/data/36dba581d/ca99dcd396d5442abdcbe2d29507ce37/FLAG21cff47a3 [2022-11-19 07:53:33,800 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:53:33,800 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-11-19 07:53:33,832 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/bin/utaipan-I9t0OCRTmS/data/36dba581d/ca99dcd396d5442abdcbe2d29507ce37/FLAG21cff47a3 [2022-11-19 07:53:33,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/bin/utaipan-I9t0OCRTmS/data/36dba581d/ca99dcd396d5442abdcbe2d29507ce37 [2022-11-19 07:53:33,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:53:33,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:53:33,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:53:33,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:53:33,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:53:33,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:33" (1/1) ... [2022-11-19 07:53:33,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fab81d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:33, skipping insertion in model container [2022-11-19 07:53:33,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:33" (1/1) ... [2022-11-19 07:53:33,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:53:33,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:53:35,071 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_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2022-11-19 07:53:35,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:53:35,198 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:53:35,522 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_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2022-11-19 07:53:35,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:53:35,691 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:53:35,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:35 WrapperNode [2022-11-19 07:53:35,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:53:35,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:53:35,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:53:35,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:53:35,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:35" (1/1) ... [2022-11-19 07:53:35,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:35" (1/1) ... [2022-11-19 07:53:35,890 INFO L138 Inliner]: procedures = 138, calls = 1444, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 3750 [2022-11-19 07:53:35,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:53:35,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:53:35,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:53:35,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:53:35,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:35" (1/1) ... [2022-11-19 07:53:35,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:35" (1/1) ... [2022-11-19 07:53:35,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:35" (1/1) ... [2022-11-19 07:53:35,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:35" (1/1) ... [2022-11-19 07:53:35,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:35" (1/1) ... [2022-11-19 07:53:36,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:35" (1/1) ... [2022-11-19 07:53:36,034 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:35" (1/1) ... [2022-11-19 07:53:36,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:35" (1/1) ... [2022-11-19 07:53:36,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:53:36,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:53:36,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:53:36,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:53:36,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:35" (1/1) ... [2022-11-19 07:53:36,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:53:36,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:53:36,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:53:36,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea73077-940b-4ef6-a3fb-cf38e72f55d6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:53:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure get_pwm1_auto_point_pwm [2022-11-19 07:53:36,250 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pwm1_auto_point_pwm [2022-11-19 07:53:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:53:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure get_fan [2022-11-19 07:53:36,251 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fan [2022-11-19 07:53:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-19 07:53:36,251 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-19 07:53:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-19 07:53:36,251 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-19 07:53:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_detect [2022-11-19 07:53:36,252 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_detect [2022-11-19 07:53:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:53:36,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:53:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:53:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:53:36,253 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:53:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:53:36,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:53:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:53:36,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:53:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:53:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-11-19 07:53:36,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-11-19 07:53:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 07:53:36,254 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 07:53:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_auto_point_temp [2022-11-19 07:53:36,255 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_auto_point_temp [2022-11-19 07:53:36,255 INFO L130 BoogieDeclarations]: Found specification of procedure set_slope_register [2022-11-19 07:53:36,255 INFO L138 BoogieDeclarations]: Found implementation of procedure set_slope_register [2022-11-19 07:53:36,255 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_alarm [2022-11-19 07:53:36,255 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_alarm [2022-11-19 07:53:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:53:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:53:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:53:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-11-19 07:53:36,256 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-11-19 07:53:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-19 07:53:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-19 07:53:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:53:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_update_device [2022-11-19 07:53:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_update_device [2022-11-19 07:53:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-19 07:53:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-19 07:53:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:53:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:53:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp [2022-11-19 07:53:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp [2022-11-19 07:53:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp [2022-11-19 07:53:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp [2022-11-19 07:53:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan [2022-11-19 07:53:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan [2022-11-19 07:53:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:53:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-11-19 07:53:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-11-19 07:53:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-11-19 07:53:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-11-19 07:53:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:53:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:53:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_auto_point_temp [2022-11-19 07:53:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_auto_point_temp [2022-11-19 07:53:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 07:53:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 07:53:36,893 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:53:36,897 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:53:41,116 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:53:42,572 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:53:42,572 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-19 07:53:42,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:42 BoogieIcfgContainer [2022-11-19 07:53:42,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:53:42,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:53:42,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:53:42,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:53:42,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:33" (1/3) ... [2022-11-19 07:53:42,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796f47e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:42, skipping insertion in model container [2022-11-19 07:53:42,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:35" (2/3) ... [2022-11-19 07:53:42,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796f47e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:42, skipping insertion in model container [2022-11-19 07:53:42,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:42" (3/3) ... [2022-11-19 07:53:42,589 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-11-19 07:53:42,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:53:42,609 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:53:42,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:53:42,707 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;@59cadf26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:53:42,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:53:42,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 642 states, 445 states have (on average 1.5460674157303371) internal successors, (688), 452 states have internal predecessors, (688), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2022-11-19 07:53:42,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:53:42,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:42,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:42,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:42,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:42,751 INFO L85 PathProgramCache]: Analyzing trace with hash 188667145, now seen corresponding path program 1 times [2022-11-19 07:53:42,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:42,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405993205] [2022-11-19 07:53:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:42,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:43,584 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 07:53:43,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:43,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405993205] [2022-11-19 07:53:43,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405993205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:43,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:43,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:53:43,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353066769] [2022-11-19 07:53:43,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:43,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:53:43,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:43,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:53:43,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:43,643 INFO L87 Difference]: Start difference. First operand has 642 states, 445 states have (on average 1.5460674157303371) internal successors, (688), 452 states have internal predecessors, (688), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:53:44,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:44,702 INFO L93 Difference]: Finished difference Result 1917 states and 3206 transitions. [2022-11-19 07:53:44,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:53:44,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-19 07:53:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:44,729 INFO L225 Difference]: With dead ends: 1917 [2022-11-19 07:53:44,729 INFO L226 Difference]: Without dead ends: 1272 [2022-11-19 07:53:44,746 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 07:53:44,750 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 1003 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:44,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1965 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:53:44,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-11-19 07:53:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1259. [2022-11-19 07:53:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 877 states have (on average 1.541619156214367) internal successors, (1352), 882 states have internal predecessors, (1352), 333 states have call successors, (333), 49 states have call predecessors, (333), 48 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2022-11-19 07:53:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2012 transitions. [2022-11-19 07:53:44,940 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2012 transitions. Word has length 29 [2022-11-19 07:53:44,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:44,941 INFO L495 AbstractCegarLoop]: Abstraction has 1259 states and 2012 transitions. [2022-11-19 07:53:44,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:53:44,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2012 transitions. [2022-11-19 07:53:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 07:53:44,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:44,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:44,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:53:44,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:44,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:44,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1911374003, now seen corresponding path program 1 times [2022-11-19 07:53:44,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:44,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698323788] [2022-11-19 07:53:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:44,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:45,413 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 07:53:45,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:45,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698323788] [2022-11-19 07:53:45,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698323788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:45,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:45,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:53:45,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068342162] [2022-11-19 07:53:45,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:45,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:53:45,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:45,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:53:45,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:45,422 INFO L87 Difference]: Start difference. First operand 1259 states and 2012 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:53:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:46,384 INFO L93 Difference]: Finished difference Result 3758 states and 6004 transitions. [2022-11-19 07:53:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:53:46,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-11-19 07:53:46,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:46,407 INFO L225 Difference]: With dead ends: 3758 [2022-11-19 07:53:46,407 INFO L226 Difference]: Without dead ends: 2500 [2022-11-19 07:53:46,415 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 07:53:46,416 INFO L413 NwaCegarLoop]: 1070 mSDtfsCounter, 992 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:46,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 1965 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:53:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2022-11-19 07:53:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2487. [2022-11-19 07:53:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 1734 states have (on average 1.5397923875432526) internal successors, (2670), 1739 states have internal predecessors, (2670), 656 states have call successors, (656), 97 states have call predecessors, (656), 96 states have return successors, (650), 650 states have call predecessors, (650), 650 states have call successors, (650) [2022-11-19 07:53:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 3976 transitions. [2022-11-19 07:53:46,589 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 3976 transitions. Word has length 31 [2022-11-19 07:53:46,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:46,589 INFO L495 AbstractCegarLoop]: Abstraction has 2487 states and 3976 transitions. [2022-11-19 07:53:46,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:53:46,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 3976 transitions. [2022-11-19 07:53:46,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:53:46,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:46,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:46,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:53:46,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:46,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:46,598 INFO L85 PathProgramCache]: Analyzing trace with hash 660983308, now seen corresponding path program 1 times [2022-11-19 07:53:46,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:46,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589101476] [2022-11-19 07:53:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:46,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:46,909 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 07:53:46,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:46,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589101476] [2022-11-19 07:53:46,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589101476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:46,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:46,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:53:46,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57354125] [2022-11-19 07:53:46,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:46,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:53:46,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:46,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:53:46,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:46,912 INFO L87 Difference]: Start difference. First operand 2487 states and 3976 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:53:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:47,987 INFO L93 Difference]: Finished difference Result 7442 states and 11896 transitions. [2022-11-19 07:53:47,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:53:47,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-19 07:53:47,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:48,020 INFO L225 Difference]: With dead ends: 7442 [2022-11-19 07:53:48,020 INFO L226 Difference]: Without dead ends: 4956 [2022-11-19 07:53:48,034 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 07:53:48,035 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 1003 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:48,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1982 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:53:48,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2022-11-19 07:53:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 4943. [2022-11-19 07:53:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 3448 states have (on average 1.5382830626450117) internal successors, (5304), 3453 states have internal predecessors, (5304), 1302 states have call successors, (1302), 193 states have call predecessors, (1302), 192 states have return successors, (1296), 1296 states have call predecessors, (1296), 1296 states have call successors, (1296) [2022-11-19 07:53:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7902 transitions. [2022-11-19 07:53:48,428 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7902 transitions. Word has length 25 [2022-11-19 07:53:48,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:48,428 INFO L495 AbstractCegarLoop]: Abstraction has 4943 states and 7902 transitions. [2022-11-19 07:53:48,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:53:48,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7902 transitions. [2022-11-19 07:53:48,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 07:53:48,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:48,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:48,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:53:48,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:48,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:48,431 INFO L85 PathProgramCache]: Analyzing trace with hash 705982968, now seen corresponding path program 1 times [2022-11-19 07:53:48,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:48,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725078024] [2022-11-19 07:53:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:48,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:48,771 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 07:53:48,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:48,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725078024] [2022-11-19 07:53:48,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725078024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:48,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:48,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:53:48,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040203849] [2022-11-19 07:53:48,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:48,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:53:48,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:48,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:53:48,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:48,774 INFO L87 Difference]: Start difference. First operand 4943 states and 7902 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:53:50,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:50,049 INFO L93 Difference]: Finished difference Result 14794 states and 23646 transitions. [2022-11-19 07:53:50,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:53:50,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-19 07:53:50,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:50,108 INFO L225 Difference]: With dead ends: 14794 [2022-11-19 07:53:50,108 INFO L226 Difference]: Without dead ends: 9852 [2022-11-19 07:53:50,129 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 07:53:50,130 INFO L413 NwaCegarLoop]: 1088 mSDtfsCounter, 1002 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:50,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1987 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:53:50,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9852 states. [2022-11-19 07:53:50,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9852 to 9839. [2022-11-19 07:53:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9839 states, 6864 states have (on average 1.5367132867132867) internal successors, (10548), 6869 states have internal predecessors, (10548), 2590 states have call successors, (2590), 385 states have call predecessors, (2590), 384 states have return successors, (2584), 2584 states have call predecessors, (2584), 2584 states have call successors, (2584) [2022-11-19 07:53:50,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9839 states to 9839 states and 15722 transitions. [2022-11-19 07:53:50,687 INFO L78 Accepts]: Start accepts. Automaton has 9839 states and 15722 transitions. Word has length 26 [2022-11-19 07:53:50,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:50,687 INFO L495 AbstractCegarLoop]: Abstraction has 9839 states and 15722 transitions. [2022-11-19 07:53:50,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:53:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 9839 states and 15722 transitions. [2022-11-19 07:53:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 07:53:50,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:50,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:50,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:53:50,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:50,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:50,691 INFO L85 PathProgramCache]: Analyzing trace with hash -23844967, now seen corresponding path program 1 times [2022-11-19 07:53:50,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:50,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953322996] [2022-11-19 07:53:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:50,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:51,017 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 07:53:51,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:51,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953322996] [2022-11-19 07:53:51,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953322996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:51,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:51,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:53:51,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630464295] [2022-11-19 07:53:51,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:51,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:53:51,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:51,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:53:51,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:51,021 INFO L87 Difference]: Start difference. First operand 9839 states and 15722 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:53:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:52,462 INFO L93 Difference]: Finished difference Result 29450 states and 47050 transitions. [2022-11-19 07:53:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:53:52,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-11-19 07:53:52,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:52,583 INFO L225 Difference]: With dead ends: 29450 [2022-11-19 07:53:52,584 INFO L226 Difference]: Without dead ends: 19612 [2022-11-19 07:53:52,626 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 07:53:52,630 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 1000 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:52,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 1991 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:53:52,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19612 states. [2022-11-19 07:53:53,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19612 to 19599. [2022-11-19 07:53:53,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19599 states, 13672 states have (on average 1.5351082504388531) internal successors, (20988), 13677 states have internal predecessors, (20988), 5158 states have call successors, (5158), 769 states have call predecessors, (5158), 768 states have return successors, (5152), 5152 states have call predecessors, (5152), 5152 states have call successors, (5152) [2022-11-19 07:53:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19599 states to 19599 states and 31298 transitions. [2022-11-19 07:53:54,044 INFO L78 Accepts]: Start accepts. Automaton has 19599 states and 31298 transitions. Word has length 30 [2022-11-19 07:53:54,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:54,045 INFO L495 AbstractCegarLoop]: Abstraction has 19599 states and 31298 transitions. [2022-11-19 07:53:54,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:53:54,045 INFO L276 IsEmpty]: Start isEmpty. Operand 19599 states and 31298 transitions. [2022-11-19 07:53:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 07:53:54,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:54,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:54,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:53:54,049 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:54,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:54,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1451009338, now seen corresponding path program 1 times [2022-11-19 07:53:54,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:54,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519907771] [2022-11-19 07:53:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:54,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:54,293 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 07:53:54,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:54,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519907771] [2022-11-19 07:53:54,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519907771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:54,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:54,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:53:54,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451745619] [2022-11-19 07:53:54,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:54,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:53:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:53:54,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:54,295 INFO L87 Difference]: Start difference. First operand 19599 states and 31298 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:53:56,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:56,634 INFO L93 Difference]: Finished difference Result 58666 states and 93666 transitions. [2022-11-19 07:53:56,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:53:56,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-19 07:53:56,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:56,869 INFO L225 Difference]: With dead ends: 58666 [2022-11-19 07:53:56,869 INFO L226 Difference]: Without dead ends: 39068 [2022-11-19 07:53:56,938 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 07:53:56,940 INFO L413 NwaCegarLoop]: 1099 mSDtfsCounter, 1004 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:56,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 1997 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:53:56,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39068 states. [2022-11-19 07:53:59,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39068 to 39055. [2022-11-19 07:53:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39055 states, 27240 states have (on average 1.5334801762114538) internal successors, (41772), 27245 states have internal predecessors, (41772), 10278 states have call successors, (10278), 1537 states have call predecessors, (10278), 1536 states have return successors, (10272), 10272 states have call predecessors, (10272), 10272 states have call successors, (10272) [2022-11-19 07:53:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39055 states to 39055 states and 62322 transitions. [2022-11-19 07:53:59,399 INFO L78 Accepts]: Start accepts. Automaton has 39055 states and 62322 transitions. Word has length 26 [2022-11-19 07:53:59,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:59,400 INFO L495 AbstractCegarLoop]: Abstraction has 39055 states and 62322 transitions. [2022-11-19 07:53:59,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:53:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 39055 states and 62322 transitions. [2022-11-19 07:53:59,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 07:53:59,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:59,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:59,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:53:59,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:59,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:59,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2140447648, now seen corresponding path program 1 times [2022-11-19 07:53:59,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:59,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860070952] [2022-11-19 07:53:59,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:59,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:59,870 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 07:53:59,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:59,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860070952] [2022-11-19 07:53:59,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860070952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:59,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:59,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:53:59,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206429668] [2022-11-19 07:53:59,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:59,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:53:59,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:59,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:53:59,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:59,875 INFO L87 Difference]: Start difference. First operand 39055 states and 62322 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:54:03,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:03,353 INFO L93 Difference]: Finished difference Result 116650 states and 186066 transitions. [2022-11-19 07:54:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:54:03,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-11-19 07:54:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:03,922 INFO L225 Difference]: With dead ends: 116650 [2022-11-19 07:54:03,922 INFO L226 Difference]: Without dead ends: 77596 [2022-11-19 07:54:04,076 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 07:54:04,077 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 991 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:04,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1999 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:54:04,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77596 states. [2022-11-19 07:54:07,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77596 to 77583. [2022-11-19 07:54:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77583 states, 54088 states have (on average 1.5313563082384263) internal successors, (82828), 54093 states have internal predecessors, (82828), 20422 states have call successors, (20422), 3073 states have call predecessors, (20422), 3072 states have return successors, (20416), 20416 states have call predecessors, (20416), 20416 states have call successors, (20416) [2022-11-19 07:54:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77583 states to 77583 states and 123666 transitions. [2022-11-19 07:54:08,394 INFO L78 Accepts]: Start accepts. Automaton has 77583 states and 123666 transitions. Word has length 33 [2022-11-19 07:54:08,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:08,394 INFO L495 AbstractCegarLoop]: Abstraction has 77583 states and 123666 transitions. [2022-11-19 07:54:08,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:54:08,395 INFO L276 IsEmpty]: Start isEmpty. Operand 77583 states and 123666 transitions. [2022-11-19 07:54:08,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-19 07:54:08,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:08,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:08,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:54:08,399 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:08,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:08,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2074140977, now seen corresponding path program 1 times [2022-11-19 07:54:08,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:08,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094929132] [2022-11-19 07:54:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:08,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:08,653 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 07:54:08,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:08,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094929132] [2022-11-19 07:54:08,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094929132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:08,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:08,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:54:08,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860807308] [2022-11-19 07:54:08,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:08,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:54:08,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:08,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:54:08,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:54:08,656 INFO L87 Difference]: Start difference. First operand 77583 states and 123666 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:54:14,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:14,911 INFO L93 Difference]: Finished difference Result 231722 states and 369202 transitions. [2022-11-19 07:54:14,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:54:14,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-11-19 07:54:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:15,883 INFO L225 Difference]: With dead ends: 231722 [2022-11-19 07:54:15,884 INFO L226 Difference]: Without dead ends: 154140 [2022-11-19 07:54:16,165 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 07:54:16,166 INFO L413 NwaCegarLoop]: 1116 mSDtfsCounter, 988 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:16,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 2011 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:54:16,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154140 states. [2022-11-19 07:54:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154140 to 154127. [2022-11-19 07:54:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154127 states, 107400 states have (on average 1.529199255121043) internal successors, (164236), 107405 states have internal predecessors, (164236), 40582 states have call successors, (40582), 6145 states have call predecessors, (40582), 6144 states have return successors, (40576), 40576 states have call predecessors, (40576), 40576 states have call successors, (40576) [2022-11-19 07:54:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154127 states to 154127 states and 245394 transitions. [2022-11-19 07:54:24,324 INFO L78 Accepts]: Start accepts. Automaton has 154127 states and 245394 transitions. Word has length 36 [2022-11-19 07:54:24,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:24,324 INFO L495 AbstractCegarLoop]: Abstraction has 154127 states and 245394 transitions. [2022-11-19 07:54:24,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:54:24,325 INFO L276 IsEmpty]: Start isEmpty. Operand 154127 states and 245394 transitions. [2022-11-19 07:54:24,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 07:54:24,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:24,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:24,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:54:24,328 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1153397256, now seen corresponding path program 1 times [2022-11-19 07:54:24,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:24,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082128372] [2022-11-19 07:54:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:24,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:24,565 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 07:54:24,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:24,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082128372] [2022-11-19 07:54:24,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082128372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:24,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:24,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:54:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431732132] [2022-11-19 07:54:24,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:24,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:54:24,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:24,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:54:24,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:54:24,569 INFO L87 Difference]: Start difference. First operand 154127 states and 245394 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)