./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--asb100.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_9b042470-331f-432b-813b-9614437397e4/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b042470-331f-432b-813b-9614437397e4/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_9b042470-331f-432b-813b-9614437397e4/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b042470-331f-432b-813b-9614437397e4/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b042470-331f-432b-813b-9614437397e4/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_9b042470-331f-432b-813b-9614437397e4/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 a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:37:41,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:37:41,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:37:41,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:37:41,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:37:41,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:37:41,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:37:41,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:37:41,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:37:41,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:37:41,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:37:41,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:37:41,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:37:41,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:37:41,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:37:41,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:37:41,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:37:41,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:37:41,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:37:41,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:37:41,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:37:41,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:37:41,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:37:41,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:37:41,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:37:41,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:37:41,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:37:41,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:37:41,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:37:41,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:37:41,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:37:41,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:37:41,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:37:41,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:37:41,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:37:41,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:37:41,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:37:41,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:37:41,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:37:41,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:37:41,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:37:41,648 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b042470-331f-432b-813b-9614437397e4/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:37:41,691 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:37:41,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:37:41,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:37:41,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:37:41,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:37:41,693 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:37:41,693 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:37:41,693 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:37:41,693 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:37:41,693 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:37:41,694 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:37:41,694 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:37:41,694 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:37:41,694 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:37:41,694 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:37:41,695 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:37:41,695 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:37:41,695 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:37:41,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:37:41,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:37:41,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:37:41,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:37:41,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:37:41,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:37:41,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:37:41,697 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:37:41,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:37:41,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:37:41,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:37:41,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:37:41,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:37:41,698 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:37:41,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:37:41,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:37:41,702 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:37:41,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:37:41,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:37:41,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:37:41,715 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_9b042470-331f-432b-813b-9614437397e4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b042470-331f-432b-813b-9614437397e4/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 [2022-11-19 06:37:41,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:37:42,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:37:42,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:37:42,044 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:37:42,045 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:37:42,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b042470-331f-432b-813b-9614437397e4/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2022-11-19 06:37:42,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b042470-331f-432b-813b-9614437397e4/bin/utaipan-I9t0OCRTmS/data/fa9638f27/56eb38c820f341d9b12618265e4e5068/FLAG543235dac [2022-11-19 06:37:43,022 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:37:43,027 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b042470-331f-432b-813b-9614437397e4/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2022-11-19 06:37:43,073 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b042470-331f-432b-813b-9614437397e4/bin/utaipan-I9t0OCRTmS/data/fa9638f27/56eb38c820f341d9b12618265e4e5068/FLAG543235dac [2022-11-19 06:37:43,547 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b042470-331f-432b-813b-9614437397e4/bin/utaipan-I9t0OCRTmS/data/fa9638f27/56eb38c820f341d9b12618265e4e5068 [2022-11-19 06:37:43,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:37:43,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:37:43,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:37:43,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:37:43,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:37:43,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:37:43" (1/1) ... [2022-11-19 06:37:43,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e5805b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:43, skipping insertion in model container [2022-11-19 06:37:43,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:37:43" (1/1) ... [2022-11-19 06:37:43,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:37:43,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:37:45,111 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_9b042470-331f-432b-813b-9614437397e4/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i[168612,168625] [2022-11-19 06:37:45,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:37:45,328 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:37:45,631 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_9b042470-331f-432b-813b-9614437397e4/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i[168612,168625] [2022-11-19 06:37:45,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:37:45,847 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:37:45,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:45 WrapperNode [2022-11-19 06:37:45,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:37:45,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:37:45,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:37:45,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:37:45,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:45" (1/1) ... [2022-11-19 06:37:45,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:45" (1/1) ... [2022-11-19 06:37:46,189 INFO L138 Inliner]: procedures = 184, calls = 2049, calls flagged for inlining = 74, calls inlined = 66, statements flattened = 5226 [2022-11-19 06:37:46,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:37:46,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:37:46,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:37:46,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:37:46,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:45" (1/1) ... [2022-11-19 06:37:46,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:45" (1/1) ... [2022-11-19 06:37:46,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:45" (1/1) ... [2022-11-19 06:37:46,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:45" (1/1) ... [2022-11-19 06:37:46,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:45" (1/1) ... [2022-11-19 06:37:46,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:45" (1/1) ... [2022-11-19 06:37:46,473 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:45" (1/1) ... [2022-11-19 06:37:46,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:45" (1/1) ... [2022-11-19 06:37:46,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:37:46,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:37:46,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:37:46,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:37:46,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:45" (1/1) ... [2022-11-19 06:37:46,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:37:46,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b042470-331f-432b-813b-9614437397e4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:37:46,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b042470-331f-432b-813b-9614437397e4/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:37:46,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b042470-331f-432b-813b-9614437397e4/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:37:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-11-19 06:37:46,630 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-11-19 06:37:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-19 06:37:46,631 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-19 06:37:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2022-11-19 06:37:46,631 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2022-11-19 06:37:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_asb100_data [2022-11-19 06:37:46,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_asb100_data [2022-11-19 06:37:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-11-19 06:37:46,632 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-11-19 06:37:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2022-11-19 06:37:46,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2022-11-19 06:37:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2022-11-19 06:37:46,632 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2022-11-19 06:37:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:37:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_hyst [2022-11-19 06:37:46,633 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_hyst [2022-11-19 06:37:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-11-19 06:37:46,633 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-11-19 06:37:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-19 06:37:46,633 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-19 06:37:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-19 06:37:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-19 06:37:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_hyst [2022-11-19 06:37:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_hyst [2022-11-19 06:37:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf_temp_from_reg [2022-11-19 06:37:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure sprintf_temp_from_reg [2022-11-19 06:37:46,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:37:46,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:37:46,635 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_update_device [2022-11-19 06:37:46,636 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_update_device [2022-11-19 06:37:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2022-11-19 06:37:46,636 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2022-11-19 06:37:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_asb100_data [2022-11-19 06:37:46,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_asb100_data [2022-11-19 06:37:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-11-19 06:37:46,637 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-11-19 06:37:46,637 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2022-11-19 06:37:46,637 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2022-11-19 06:37:46,637 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2022-11-19 06:37:46,638 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2022-11-19 06:37:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:37:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 06:37:46,638 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 06:37:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 06:37:46,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 06:37:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-11-19 06:37:46,639 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-11-19 06:37:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_max [2022-11-19 06:37:46,641 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_max [2022-11-19 06:37:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:37:46,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:37:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2022-11-19 06:37:46,642 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2022-11-19 06:37:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2022-11-19 06:37:46,642 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2022-11-19 06:37:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_write_value [2022-11-19 06:37:46,642 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_write_value [2022-11-19 06:37:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2022-11-19 06:37:46,643 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2022-11-19 06:37:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:37:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 06:37:46,643 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 06:37:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-11-19 06:37:46,644 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-11-19 06:37:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:37:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:37:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2022-11-19 06:37:46,644 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2022-11-19 06:37:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-11-19 06:37:46,645 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-11-19 06:37:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:37:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_asb100_data [2022-11-19 06:37:46,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_asb100_data [2022-11-19 06:37:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2022-11-19 06:37:46,646 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2022-11-19 06:37:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-11-19 06:37:46,646 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-11-19 06:37:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-11-19 06:37:46,647 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-11-19 06:37:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-19 06:37:46,647 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-19 06:37:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-11-19 06:37:46,648 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-11-19 06:37:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:37:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-19 06:37:46,649 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-19 06:37:46,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:37:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure IN_FROM_REG [2022-11-19 06:37:46,650 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_FROM_REG [2022-11-19 06:37:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-11-19 06:37:46,650 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-11-19 06:37:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:37:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-11-19 06:37:46,651 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-11-19 06:37:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_detect [2022-11-19 06:37:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_detect [2022-11-19 06:37:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_read_value [2022-11-19 06:37:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_read_value [2022-11-19 06:37:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-19 06:37:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-19 06:37:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-11-19 06:37:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-11-19 06:37:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-19 06:37:46,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-19 06:37:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2022-11-19 06:37:46,654 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2022-11-19 06:37:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:37:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-11-19 06:37:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-11-19 06:37:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:37:46,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:37:46,659 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 06:37:46,659 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 06:37:47,617 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:37:47,620 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:37:53,678 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:37:55,796 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:37:55,796 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 06:37:55,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:55 BoogieIcfgContainer [2022-11-19 06:37:55,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:37:55,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:37:55,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:37:55,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:37:55,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:37:43" (1/3) ... [2022-11-19 06:37:55,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d3da29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:37:55, skipping insertion in model container [2022-11-19 06:37:55,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:45" (2/3) ... [2022-11-19 06:37:55,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d3da29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:37:55, skipping insertion in model container [2022-11-19 06:37:55,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:55" (3/3) ... [2022-11-19 06:37:55,820 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2022-11-19 06:37:55,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:37:55,844 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:37:55,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:37:55,935 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;@5bfc54ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:37:55,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:37:55,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 1020 states, 690 states have (on average 1.5333333333333334) internal successors, (1058), 704 states have internal predecessors, (1058), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) [2022-11-19 06:37:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 06:37:55,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:55,959 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 06:37:55,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:55,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1773342205, now seen corresponding path program 1 times [2022-11-19 06:37:55,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:55,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157932735] [2022-11-19 06:37:55,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:55,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:57,043 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 06:37:57,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:57,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157932735] [2022-11-19 06:37:57,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157932735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:37:57,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:37:57,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:37:57,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896197253] [2022-11-19 06:37:57,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:37:57,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:37:57,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:37:57,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:37:57,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:57,101 INFO L87 Difference]: Start difference. First operand has 1020 states, 690 states have (on average 1.5333333333333334) internal successors, (1058), 704 states have internal predecessors, (1058), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:37:58,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:58,143 INFO L93 Difference]: Finished difference Result 3047 states and 5120 transitions. [2022-11-19 06:37:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:37:58,147 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-19 06:37:58,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:58,188 INFO L225 Difference]: With dead ends: 3047 [2022-11-19 06:37:58,188 INFO L226 Difference]: Without dead ends: 2024 [2022-11-19 06:37:58,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:58,210 INFO L413 NwaCegarLoop]: 1712 mSDtfsCounter, 1580 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:58,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 3151 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 06:37:58,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2022-11-19 06:37:58,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2007. [2022-11-19 06:37:58,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 1363 states have (on average 1.5297138664710197) internal successors, (2085), 1379 states have internal predecessors, (2085), 543 states have call successors, (543), 101 states have call predecessors, (543), 100 states have return successors, (534), 530 states have call predecessors, (534), 534 states have call successors, (534) [2022-11-19 06:37:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 3162 transitions. [2022-11-19 06:37:58,476 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 3162 transitions. Word has length 31 [2022-11-19 06:37:58,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:58,476 INFO L495 AbstractCegarLoop]: Abstraction has 2007 states and 3162 transitions. [2022-11-19 06:37:58,477 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:37:58,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 3162 transitions. [2022-11-19 06:37:58,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 06:37:58,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:58,480 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] [2022-11-19 06:37:58,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:37:58,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:58,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1351328874, now seen corresponding path program 1 times [2022-11-19 06:37:58,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:58,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106647696] [2022-11-19 06:37:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:58,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:59,045 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 06:37:59,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:59,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106647696] [2022-11-19 06:37:59,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106647696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:37:59,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:37:59,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:37:59,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995348441] [2022-11-19 06:37:59,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:37:59,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:37:59,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:37:59,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:37:59,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:59,049 INFO L87 Difference]: Start difference. First operand 2007 states and 3162 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, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:37:59,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:59,890 INFO L93 Difference]: Finished difference Result 5974 states and 9410 transitions. [2022-11-19 06:37:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:37:59,891 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, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2022-11-19 06:37:59,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:59,923 INFO L225 Difference]: With dead ends: 5974 [2022-11-19 06:37:59,924 INFO L226 Difference]: Without dead ends: 3968 [2022-11-19 06:37:59,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:59,938 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 1551 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:59,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 3155 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 06:37:59,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2022-11-19 06:38:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3951. [2022-11-19 06:38:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 2691 states have (on average 1.5302861389817912) internal successors, (4118), 2715 states have internal predecessors, (4118), 1059 states have call successors, (1059), 201 states have call predecessors, (1059), 200 states have return successors, (1050), 1042 states have call predecessors, (1050), 1050 states have call successors, (1050) [2022-11-19 06:38:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 6227 transitions. [2022-11-19 06:38:00,243 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 6227 transitions. Word has length 34 [2022-11-19 06:38:00,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:00,244 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 6227 transitions. [2022-11-19 06:38:00,244 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, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:38:00,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 6227 transitions. [2022-11-19 06:38:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 06:38:00,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:00,248 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] [2022-11-19 06:38:00,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:38:00,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:00,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:00,251 INFO L85 PathProgramCache]: Analyzing trace with hash 65899667, now seen corresponding path program 1 times [2022-11-19 06:38:00,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:00,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452158575] [2022-11-19 06:38:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:00,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:00,667 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 06:38:00,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:00,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452158575] [2022-11-19 06:38:00,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452158575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:00,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:00,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:38:00,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934145574] [2022-11-19 06:38:00,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:00,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:00,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:00,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:00,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:00,682 INFO L87 Difference]: Start difference. First operand 3951 states and 6227 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:38:01,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:01,595 INFO L93 Difference]: Finished difference Result 11770 states and 18545 transitions. [2022-11-19 06:38:01,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:01,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-19 06:38:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:01,737 INFO L225 Difference]: With dead ends: 11770 [2022-11-19 06:38:01,737 INFO L226 Difference]: Without dead ends: 7820 [2022-11-19 06:38:01,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:01,763 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 1553 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:01,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 3181 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 06:38:01,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7820 states. [2022-11-19 06:38:02,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7820 to 7803. [2022-11-19 06:38:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7803 states, 5325 states have (on average 1.5305164319248827) internal successors, (8150), 5365 states have internal predecessors, (8150), 2077 states have call successors, (2077), 401 states have call predecessors, (2077), 400 states have return successors, (2068), 2052 states have call predecessors, (2068), 2068 states have call successors, (2068) [2022-11-19 06:38:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7803 states to 7803 states and 12295 transitions. [2022-11-19 06:38:02,193 INFO L78 Accepts]: Start accepts. Automaton has 7803 states and 12295 transitions. Word has length 35 [2022-11-19 06:38:02,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:02,194 INFO L495 AbstractCegarLoop]: Abstraction has 7803 states and 12295 transitions. [2022-11-19 06:38:02,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:38:02,194 INFO L276 IsEmpty]: Start isEmpty. Operand 7803 states and 12295 transitions. [2022-11-19 06:38:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-19 06:38:02,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:02,196 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] [2022-11-19 06:38:02,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:38:02,196 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:02,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:02,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1955369645, now seen corresponding path program 1 times [2022-11-19 06:38:02,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:02,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921187666] [2022-11-19 06:38:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:02,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:02,629 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 06:38:02,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:02,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921187666] [2022-11-19 06:38:02,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921187666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:02,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:02,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:38:02,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655479166] [2022-11-19 06:38:02,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:02,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:02,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:02,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:02,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:02,633 INFO L87 Difference]: Start difference. First operand 7803 states and 12295 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:38:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:04,056 INFO L93 Difference]: Finished difference Result 23342 states and 36769 transitions. [2022-11-19 06:38:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:04,057 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-11-19 06:38:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:04,206 INFO L225 Difference]: With dead ends: 23342 [2022-11-19 06:38:04,206 INFO L226 Difference]: Without dead ends: 15540 [2022-11-19 06:38:04,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:04,271 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 1577 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:04,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3209 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 06:38:04,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15540 states. [2022-11-19 06:38:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15540 to 15523. [2022-11-19 06:38:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15523 states, 10593 states have (on average 1.5291230057585197) internal successors, (16198), 10665 states have internal predecessors, (16198), 4129 states have call successors, (4129), 801 states have call predecessors, (4129), 800 states have return successors, (4120), 4088 states have call predecessors, (4120), 4120 states have call successors, (4120) [2022-11-19 06:38:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15523 states to 15523 states and 24447 transitions. [2022-11-19 06:38:05,283 INFO L78 Accepts]: Start accepts. Automaton has 15523 states and 24447 transitions. Word has length 32 [2022-11-19 06:38:05,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:05,284 INFO L495 AbstractCegarLoop]: Abstraction has 15523 states and 24447 transitions. [2022-11-19 06:38:05,285 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:38:05,285 INFO L276 IsEmpty]: Start isEmpty. Operand 15523 states and 24447 transitions. [2022-11-19 06:38:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-19 06:38:05,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:05,288 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] [2022-11-19 06:38:05,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:38:05,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:05,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:05,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1921789939, now seen corresponding path program 1 times [2022-11-19 06:38:05,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:05,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200373134] [2022-11-19 06:38:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:05,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:05,657 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 06:38:05,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:05,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200373134] [2022-11-19 06:38:05,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200373134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:05,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:05,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:38:05,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064725202] [2022-11-19 06:38:05,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:05,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:05,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:05,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:05,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:05,661 INFO L87 Difference]: Start difference. First operand 15523 states and 24447 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:38:07,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:07,436 INFO L93 Difference]: Finished difference Result 46502 states and 73225 transitions. [2022-11-19 06:38:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:07,436 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-11-19 06:38:07,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:07,780 INFO L225 Difference]: With dead ends: 46502 [2022-11-19 06:38:07,780 INFO L226 Difference]: Without dead ends: 30980 [2022-11-19 06:38:07,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:07,862 INFO L413 NwaCegarLoop]: 1784 mSDtfsCounter, 1583 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:07,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 3225 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 06:38:07,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30980 states. [2022-11-19 06:38:09,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30980 to 30963. [2022-11-19 06:38:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30963 states, 21129 states have (on average 1.5280420275450801) internal successors, (32286), 21265 states have internal predecessors, (32286), 8233 states have call successors, (8233), 1601 states have call predecessors, (8233), 1600 states have return successors, (8224), 8160 states have call predecessors, (8224), 8224 states have call successors, (8224) [2022-11-19 06:38:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30963 states to 30963 states and 48743 transitions. [2022-11-19 06:38:10,314 INFO L78 Accepts]: Start accepts. Automaton has 30963 states and 48743 transitions. Word has length 32 [2022-11-19 06:38:10,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:10,314 INFO L495 AbstractCegarLoop]: Abstraction has 30963 states and 48743 transitions. [2022-11-19 06:38:10,314 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:38:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 30963 states and 48743 transitions. [2022-11-19 06:38:10,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 06:38:10,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:10,317 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 06:38:10,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:38:10,318 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:10,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:10,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1798353626, now seen corresponding path program 1 times [2022-11-19 06:38:10,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:10,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295465377] [2022-11-19 06:38:10,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:10,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:10,772 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 06:38:10,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:10,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295465377] [2022-11-19 06:38:10,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295465377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:10,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:10,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:38:10,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031222276] [2022-11-19 06:38:10,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:10,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:10,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:10,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:10,776 INFO L87 Difference]: Start difference. First operand 30963 states and 48743 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:38:14,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:14,115 INFO L93 Difference]: Finished difference Result 92630 states and 145777 transitions. [2022-11-19 06:38:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:14,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-19 06:38:14,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:14,575 INFO L225 Difference]: With dead ends: 92630 [2022-11-19 06:38:14,576 INFO L226 Difference]: Without dead ends: 61668 [2022-11-19 06:38:14,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:14,722 INFO L413 NwaCegarLoop]: 1790 mSDtfsCounter, 1579 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:14,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 3228 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 06:38:14,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61668 states. [2022-11-19 06:38:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61668 to 61651. [2022-11-19 06:38:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61651 states, 42057 states have (on average 1.526642413866895) internal successors, (64206), 42321 states have internal predecessors, (64206), 16393 states have call successors, (16393), 3201 states have call predecessors, (16393), 3200 states have return successors, (16384), 16256 states have call predecessors, (16384), 16384 states have call successors, (16384) [2022-11-19 06:38:18,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61651 states to 61651 states and 96983 transitions. [2022-11-19 06:38:18,359 INFO L78 Accepts]: Start accepts. Automaton has 61651 states and 96983 transitions. Word has length 30 [2022-11-19 06:38:18,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:18,359 INFO L495 AbstractCegarLoop]: Abstraction has 61651 states and 96983 transitions. [2022-11-19 06:38:18,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:38:18,360 INFO L276 IsEmpty]: Start isEmpty. Operand 61651 states and 96983 transitions. [2022-11-19 06:38:18,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 06:38:18,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:18,361 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] [2022-11-19 06:38:18,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:38:18,362 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:18,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:18,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1956628983, now seen corresponding path program 1 times [2022-11-19 06:38:18,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:18,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045679556] [2022-11-19 06:38:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:18,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:18,821 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 06:38:18,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:18,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045679556] [2022-11-19 06:38:18,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045679556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:18,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:18,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:38:18,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542129828] [2022-11-19 06:38:18,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:18,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:18,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:18,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:18,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:18,825 INFO L87 Difference]: Start difference. First operand 61651 states and 96983 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:38:23,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:23,968 INFO L93 Difference]: Finished difference Result 184438 states and 290049 transitions. [2022-11-19 06:38:23,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:23,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2022-11-19 06:38:23,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:24,603 INFO L225 Difference]: With dead ends: 184438 [2022-11-19 06:38:24,603 INFO L226 Difference]: Without dead ends: 122788 [2022-11-19 06:38:24,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:24,856 INFO L413 NwaCegarLoop]: 1918 mSDtfsCounter, 1575 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:24,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 3356 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 06:38:24,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122788 states. [2022-11-19 06:38:30,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122788 to 122771. [2022-11-19 06:38:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122771 states, 83721 states have (on average 1.5252326178617073) internal successors, (127694), 84241 states have internal predecessors, (127694), 32649 states have call successors, (32649), 6401 states have call predecessors, (32649), 6400 states have return successors, (32640), 32384 states have call predecessors, (32640), 32640 states have call successors, (32640) [2022-11-19 06:38:31,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122771 states to 122771 states and 192983 transitions. [2022-11-19 06:38:31,501 INFO L78 Accepts]: Start accepts. Automaton has 122771 states and 192983 transitions. Word has length 34 [2022-11-19 06:38:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:31,503 INFO L495 AbstractCegarLoop]: Abstraction has 122771 states and 192983 transitions. [2022-11-19 06:38:31,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:38:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 122771 states and 192983 transitions. [2022-11-19 06:38:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-19 06:38:31,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:31,507 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, 1] [2022-11-19 06:38:31,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:38:31,507 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:31,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:31,508 INFO L85 PathProgramCache]: Analyzing trace with hash -257064914, now seen corresponding path program 1 times [2022-11-19 06:38:31,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:31,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429200087] [2022-11-19 06:38:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:31,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:31,883 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 06:38:31,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:31,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429200087] [2022-11-19 06:38:31,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429200087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:31,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:31,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:38:31,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534283066] [2022-11-19 06:38:31,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:31,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:31,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:31,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:31,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:31,888 INFO L87 Difference]: Start difference. First operand 122771 states and 192983 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, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:38:41,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:41,548 INFO L93 Difference]: Finished difference Result 367798 states and 578049 transitions. [2022-11-19 06:38:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:41,549 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, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2022-11-19 06:38:41,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:42,881 INFO L225 Difference]: With dead ends: 367798 [2022-11-19 06:38:42,881 INFO L226 Difference]: Without dead ends: 245028 [2022-11-19 06:38:43,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:43,426 INFO L413 NwaCegarLoop]: 2064 mSDtfsCounter, 1576 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 3506 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:43,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 3506 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 06:38:43,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245028 states.