./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.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_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/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_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/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_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/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 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:27:23,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:27:23,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:27:23,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:27:23,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:27:23,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:27:23,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:27:23,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:27:23,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:27:23,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:27:23,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:27:23,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:27:23,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:27:23,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:27:23,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:27:23,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:27:23,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:27:23,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:27:23,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:27:23,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:27:23,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:27:23,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:27:23,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:27:23,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:27:23,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:27:23,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:27:23,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:27:23,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:27:23,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:27:23,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:27:23,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:27:23,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:27:23,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:27:23,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:27:23,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:27:23,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:27:23,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:27:23,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:27:23,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:27:23,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:27:23,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:27:23,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:27:23,773 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:27:23,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:27:23,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:27:23,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:27:23,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:27:23,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:27:23,776 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:27:23,776 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:27:23,777 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:27:23,777 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:27:23,778 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:27:23,779 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:27:23,779 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:27:23,779 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:27:23,779 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:27:23,780 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:27:23,780 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:27:23,780 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:27:23,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:27:23,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:27:23,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:27:23,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:27:23,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:27:23,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:27:23,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:27:23,784 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:27:23,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:27:23,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:27:23,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:27:23,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:27:23,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:27:23,786 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:27:23,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:27:23,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:27:23,787 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:27:23,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:27:23,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:27:23,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:27:23,788 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_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 [2022-11-19 08:27:24,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:27:24,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:27:24,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:27:24,178 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:27:24,179 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:27:24,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-19 08:27:24,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/data/560f97f47/4dcfd367c9c8421c815d779969841149/FLAGc370f5062 [2022-11-19 08:27:25,267 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:27:25,268 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-19 08:27:25,326 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/data/560f97f47/4dcfd367c9c8421c815d779969841149/FLAGc370f5062 [2022-11-19 08:27:25,587 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/data/560f97f47/4dcfd367c9c8421c815d779969841149 [2022-11-19 08:27:25,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:27:25,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:27:25,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:27:25,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:27:25,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:27:25,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:27:25" (1/1) ... [2022-11-19 08:27:25,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6737582e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:25, skipping insertion in model container [2022-11-19 08:27:25,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:27:25" (1/1) ... [2022-11-19 08:27:25,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:27:25,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:27:28,569 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_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2022-11-19 08:27:28,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:27:28,772 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:27:29,363 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_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2022-11-19 08:27:29,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:27:29,482 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:27:29,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:29 WrapperNode [2022-11-19 08:27:29,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:27:29,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:27:29,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:27:29,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:27:29,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:29" (1/1) ... [2022-11-19 08:27:29,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:29" (1/1) ... [2022-11-19 08:27:29,933 INFO L138 Inliner]: procedures = 273, calls = 4121, calls flagged for inlining = 105, calls inlined = 96, statements flattened = 8955 [2022-11-19 08:27:29,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:27:29,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:27:29,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:27:29,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:27:29,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:29" (1/1) ... [2022-11-19 08:27:29,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:29" (1/1) ... [2022-11-19 08:27:30,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:29" (1/1) ... [2022-11-19 08:27:30,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:29" (1/1) ... [2022-11-19 08:27:30,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:29" (1/1) ... [2022-11-19 08:27:30,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:29" (1/1) ... [2022-11-19 08:27:30,350 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:29" (1/1) ... [2022-11-19 08:27:30,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:29" (1/1) ... [2022-11-19 08:27:30,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:27:30,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:27:30,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:27:30,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:27:30,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:29" (1/1) ... [2022-11-19 08:27:30,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:27:30,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:30,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:27:30,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:27:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-19 08:27:30,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-19 08:27:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2022-11-19 08:27:30,613 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2022-11-19 08:27:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-19 08:27:30,613 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-19 08:27:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 08:27:30,614 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 08:27:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-19 08:27:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:27:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:27:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2022-11-19 08:27:30,614 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2022-11-19 08:27:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-19 08:27:30,615 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-19 08:27:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-11-19 08:27:30,615 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-11-19 08:27:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-19 08:27:30,615 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-19 08:27:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2022-11-19 08:27:30,616 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2022-11-19 08:27:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2022-11-19 08:27:30,616 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2022-11-19 08:27:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:27:30,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:27:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2022-11-19 08:27:30,617 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2022-11-19 08:27:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2022-11-19 08:27:30,617 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2022-11-19 08:27:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-11-19 08:27:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-11-19 08:27:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-11-19 08:27:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-11-19 08:27:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 08:27:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 08:27:30,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:27:30,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:27:30,620 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-19 08:27:30,620 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-19 08:27:30,620 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2022-11-19 08:27:30,620 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2022-11-19 08:27:30,621 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2022-11-19 08:27:30,621 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2022-11-19 08:27:30,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-19 08:27:30,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-19 08:27:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2022-11-19 08:27:30,622 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2022-11-19 08:27:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:27:30,623 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:27:30,624 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2022-11-19 08:27:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2022-11-19 08:27:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2022-11-19 08:27:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2022-11-19 08:27:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 08:27:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 08:27:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2022-11-19 08:27:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2022-11-19 08:27:30,626 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2022-11-19 08:27:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2022-11-19 08:27:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2022-11-19 08:27:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2022-11-19 08:27:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2022-11-19 08:27:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2022-11-19 08:27:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2022-11-19 08:27:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2022-11-19 08:27:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:27:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2022-11-19 08:27:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2022-11-19 08:27:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 08:27:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2022-11-19 08:27:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2022-11-19 08:27:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-19 08:27:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-19 08:27:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2022-11-19 08:27:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2022-11-19 08:27:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:27:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2022-11-19 08:27:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2022-11-19 08:27:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2022-11-19 08:27:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2022-11-19 08:27:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-19 08:27:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-19 08:27:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2022-11-19 08:27:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2022-11-19 08:27:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-19 08:27:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-19 08:27:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-11-19 08:27:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-11-19 08:27:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:27:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2022-11-19 08:27:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2022-11-19 08:27:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:27:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-19 08:27:30,637 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-19 08:27:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 08:27:30,637 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 08:27:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:27:30,638 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:27:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2022-11-19 08:27:30,638 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2022-11-19 08:27:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-19 08:27:30,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-19 08:27:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2022-11-19 08:27:30,639 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2022-11-19 08:27:30,639 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2022-11-19 08:27:30,639 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2022-11-19 08:27:30,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-19 08:27:30,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-19 08:27:30,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:27:30,642 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-19 08:27:30,644 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-19 08:27:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2022-11-19 08:27:30,647 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2022-11-19 08:27:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-11-19 08:27:30,647 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-11-19 08:27:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:27:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2022-11-19 08:27:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2022-11-19 08:27:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:27:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2022-11-19 08:27:30,656 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2022-11-19 08:27:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2022-11-19 08:27:30,657 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2022-11-19 08:27:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:27:30,657 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:27:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2022-11-19 08:27:30,657 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2022-11-19 08:27:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2022-11-19 08:27:30,658 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2022-11-19 08:27:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2022-11-19 08:27:30,658 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2022-11-19 08:27:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2022-11-19 08:27:30,658 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2022-11-19 08:27:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:27:30,659 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:27:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2022-11-19 08:27:30,659 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2022-11-19 08:27:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-19 08:27:30,659 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-19 08:27:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:27:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-19 08:27:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-19 08:27:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2022-11-19 08:27:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2022-11-19 08:27:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2022-11-19 08:27:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2022-11-19 08:27:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2022-11-19 08:27:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2022-11-19 08:27:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:27:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:27:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-11-19 08:27:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-11-19 08:27:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:27:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-19 08:27:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-19 08:27:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2022-11-19 08:27:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2022-11-19 08:27:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-19 08:27:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-19 08:27:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:27:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2022-11-19 08:27:30,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2022-11-19 08:27:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2022-11-19 08:27:30,663 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2022-11-19 08:27:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-19 08:27:30,663 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-19 08:27:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:27:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 08:27:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2022-11-19 08:27:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2022-11-19 08:27:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2022-11-19 08:27:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2022-11-19 08:27:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2022-11-19 08:27:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2022-11-19 08:27:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-19 08:27:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-19 08:27:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-19 08:27:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-19 08:27:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2022-11-19 08:27:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2022-11-19 08:27:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2022-11-19 08:27:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2022-11-19 08:27:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2022-11-19 08:27:30,666 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2022-11-19 08:27:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2022-11-19 08:27:30,666 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2022-11-19 08:27:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-19 08:27:30,666 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-19 08:27:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2022-11-19 08:27:30,668 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2022-11-19 08:27:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-19 08:27:30,668 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-19 08:27:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2022-11-19 08:27:30,668 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2022-11-19 08:27:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:27:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2022-11-19 08:27:30,669 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2022-11-19 08:27:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2022-11-19 08:27:30,669 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2022-11-19 08:27:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:27:30,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:27:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 08:27:30,670 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 08:27:31,902 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:27:31,910 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:27:51,785 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:27:58,128 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:27:58,128 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 08:27:58,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:27:58 BoogieIcfgContainer [2022-11-19 08:27:58,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:27:58,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:27:58,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:27:58,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:27:58,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:27:25" (1/3) ... [2022-11-19 08:27:58,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1ccba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:27:58, skipping insertion in model container [2022-11-19 08:27:58,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:29" (2/3) ... [2022-11-19 08:27:58,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1ccba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:27:58, skipping insertion in model container [2022-11-19 08:27:58,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:27:58" (3/3) ... [2022-11-19 08:27:58,157 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-19 08:27:58,182 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:27:58,182 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:27:58,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:27:58,339 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;@27b51e79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:27:58,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:27:58,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 2157 states, 1460 states have (on average 1.4) internal successors, (2044), 1486 states have internal predecessors, (2044), 603 states have call successors, (603), 92 states have call predecessors, (603), 92 states have return successors, (603), 600 states have call predecessors, (603), 603 states have call successors, (603) [2022-11-19 08:27:58,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 08:27:58,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:58,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:58,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:27:58,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:58,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1375374933, now seen corresponding path program 1 times [2022-11-19 08:27:58,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:58,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368110129] [2022-11-19 08:27:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:58,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:59,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:59,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368110129] [2022-11-19 08:27:59,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368110129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:59,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:27:59,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:27:59,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233571385] [2022-11-19 08:27:59,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:59,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:27:59,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:59,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:27:59,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:27:59,497 INFO L87 Difference]: Start difference. First operand has 2157 states, 1460 states have (on average 1.4) internal successors, (2044), 1486 states have internal predecessors, (2044), 603 states have call successors, (603), 92 states have call predecessors, (603), 92 states have return successors, (603), 600 states have call predecessors, (603), 603 states have call successors, (603) Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 08:28:05,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:09,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:28:11,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:28:15,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:18,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:20,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:25,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:25,198 INFO L93 Difference]: Finished difference Result 6443 states and 10096 transitions. [2022-11-19 08:28:25,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:28:25,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2022-11-19 08:28:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:25,255 INFO L225 Difference]: With dead ends: 6443 [2022-11-19 08:28:25,255 INFO L226 Difference]: Without dead ends: 4292 [2022-11-19 08:28:25,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:28:25,283 INFO L413 NwaCegarLoop]: 4471 mSDtfsCounter, 2172 mSDsluCounter, 7294 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 416 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2590 SdHoareTripleChecker+Valid, 11765 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:25,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2590 Valid, 11765 Invalid, 1701 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [416 Valid, 1279 Invalid, 6 Unknown, 0 Unchecked, 25.1s Time] [2022-11-19 08:28:25,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2022-11-19 08:28:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 2151. [2022-11-19 08:28:25,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 1456 states have (on average 1.3956043956043955) internal successors, (2032), 1480 states have internal predecessors, (2032), 603 states have call successors, (603), 92 states have call predecessors, (603), 91 states have return successors, (595), 592 states have call predecessors, (595), 595 states have call successors, (595) [2022-11-19 08:28:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3230 transitions. [2022-11-19 08:28:25,646 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3230 transitions. Word has length 26 [2022-11-19 08:28:25,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:25,649 INFO L495 AbstractCegarLoop]: Abstraction has 2151 states and 3230 transitions. [2022-11-19 08:28:25,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 08:28:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3230 transitions. [2022-11-19 08:28:25,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 08:28:25,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:25,653 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 08:28:25,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:28:25,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:28:25,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1636261023, now seen corresponding path program 1 times [2022-11-19 08:28:25,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:25,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583650419] [2022-11-19 08:28:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:26,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:26,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583650419] [2022-11-19 08:28:26,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583650419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:26,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:26,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:28:26,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112078368] [2022-11-19 08:28:26,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:26,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:28:26,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:26,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:28:26,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:28:26,027 INFO L87 Difference]: Start difference. First operand 2151 states and 3230 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:28:29,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:33,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:28:35,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:28:38,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:43,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:43,090 INFO L93 Difference]: Finished difference Result 4210 states and 6315 transitions. [2022-11-19 08:28:43,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:28:43,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 30 [2022-11-19 08:28:43,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:43,139 INFO L225 Difference]: With dead ends: 4210 [2022-11-19 08:28:43,139 INFO L226 Difference]: Without dead ends: 4207 [2022-11-19 08:28:43,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:28:43,152 INFO L413 NwaCegarLoop]: 3448 mSDtfsCounter, 3105 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3105 SdHoareTripleChecker+Valid, 6290 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:43,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3105 Valid, 6290 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 685 Invalid, 4 Unknown, 0 Unchecked, 16.8s Time] [2022-11-19 08:28:43,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2022-11-19 08:28:43,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 4201. [2022-11-19 08:28:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4201 states, 2851 states have (on average 1.3949491406524026) internal successors, (3977), 2887 states have internal predecessors, (3977), 1169 states have call successors, (1169), 181 states have call predecessors, (1169), 180 states have return successors, (1161), 1157 states have call predecessors, (1161), 1161 states have call successors, (1161) [2022-11-19 08:28:43,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 6307 transitions. [2022-11-19 08:28:43,608 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 6307 transitions. Word has length 30 [2022-11-19 08:28:43,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:43,609 INFO L495 AbstractCegarLoop]: Abstraction has 4201 states and 6307 transitions. [2022-11-19 08:28:43,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:28:43,610 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 6307 transitions. [2022-11-19 08:28:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 08:28:43,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:43,612 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 08:28:43,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:28:43,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:28:43,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:43,627 INFO L85 PathProgramCache]: Analyzing trace with hash 814392023, now seen corresponding path program 1 times [2022-11-19 08:28:43,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:43,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405875484] [2022-11-19 08:28:43,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:43,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:44,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:44,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405875484] [2022-11-19 08:28:44,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405875484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:44,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:44,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:28:44,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56002210] [2022-11-19 08:28:44,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:44,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:28:44,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:44,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:28:44,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:28:44,077 INFO L87 Difference]: Start difference. First operand 4201 states and 6307 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:28:47,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:52,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:28:54,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:28:58,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:01,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:01,172 INFO L93 Difference]: Finished difference Result 7093 states and 10549 transitions. [2022-11-19 08:29:01,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:01,173 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), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31 [2022-11-19 08:29:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:01,262 INFO L225 Difference]: With dead ends: 7093 [2022-11-19 08:29:01,262 INFO L226 Difference]: Without dead ends: 7089 [2022-11-19 08:29:01,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:01,274 INFO L413 NwaCegarLoop]: 3703 mSDtfsCounter, 2174 mSDsluCounter, 2815 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 6518 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:01,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 6518 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 745 Invalid, 4 Unknown, 0 Unchecked, 16.7s Time] [2022-11-19 08:29:01,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7089 states. [2022-11-19 08:29:01,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7089 to 7084. [2022-11-19 08:29:01,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7084 states, 4750 states have (on average 1.3770526315789473) internal successors, (6541), 4812 states have internal predecessors, (6541), 2003 states have call successors, (2003), 333 states have call predecessors, (2003), 330 states have return successors, (1995), 1983 states have call predecessors, (1995), 1995 states have call successors, (1995) [2022-11-19 08:29:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 10539 transitions. [2022-11-19 08:29:01,898 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 10539 transitions. Word has length 31 [2022-11-19 08:29:01,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:01,899 INFO L495 AbstractCegarLoop]: Abstraction has 7084 states and 10539 transitions. [2022-11-19 08:29:01,900 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), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:29:01,901 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 10539 transitions. [2022-11-19 08:29:01,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-19 08:29:01,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:01,904 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 08:29:01,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:29:01,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:01,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash -524770012, now seen corresponding path program 1 times [2022-11-19 08:29:01,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:01,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887466943] [2022-11-19 08:29:01,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:01,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:29:02,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:02,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887466943] [2022-11-19 08:29:02,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887466943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:02,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:02,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:29:02,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925159760] [2022-11-19 08:29:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:02,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:02,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:02,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:02,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:02,406 INFO L87 Difference]: Start difference. First operand 7084 states and 10539 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:29:05,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:09,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:11,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:14,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:17,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:19,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:21,868 INFO L93 Difference]: Finished difference Result 10586 states and 15747 transitions. [2022-11-19 08:29:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:21,869 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), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2022-11-19 08:29:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:21,964 INFO L225 Difference]: With dead ends: 10586 [2022-11-19 08:29:21,965 INFO L226 Difference]: Without dead ends: 10583 [2022-11-19 08:29:21,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:21,981 INFO L413 NwaCegarLoop]: 3449 mSDtfsCounter, 3110 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3110 SdHoareTripleChecker+Valid, 6297 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:21,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3110 Valid, 6297 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 687 Invalid, 3 Unknown, 0 Unchecked, 19.1s Time] [2022-11-19 08:29:21,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10583 states. [2022-11-19 08:29:22,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10583 to 10575. [2022-11-19 08:29:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10575 states, 7095 states have (on average 1.377167019027484) internal successors, (9771), 7183 states have internal predecessors, (9771), 2987 states have call successors, (2987), 496 states have call predecessors, (2987), 492 states have return successors, (2979), 2961 states have call predecessors, (2979), 2979 states have call successors, (2979) [2022-11-19 08:29:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10575 states to 10575 states and 15737 transitions. [2022-11-19 08:29:22,795 INFO L78 Accepts]: Start accepts. Automaton has 10575 states and 15737 transitions. Word has length 32 [2022-11-19 08:29:22,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:22,796 INFO L495 AbstractCegarLoop]: Abstraction has 10575 states and 15737 transitions. [2022-11-19 08:29:22,797 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), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:29:22,797 INFO L276 IsEmpty]: Start isEmpty. Operand 10575 states and 15737 transitions. [2022-11-19 08:29:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 08:29:22,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:22,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:22,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:29:22,807 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:22,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:22,808 INFO L85 PathProgramCache]: Analyzing trace with hash 910884730, now seen corresponding path program 1 times [2022-11-19 08:29:22,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:22,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097690861] [2022-11-19 08:29:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:22,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:29:23,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:23,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097690861] [2022-11-19 08:29:23,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097690861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:23,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:23,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:29:23,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646880461] [2022-11-19 08:29:23,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:23,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:23,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:23,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:23,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:23,082 INFO L87 Difference]: Start difference. First operand 10575 states and 15737 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:29:25,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:28,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:32,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:36,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:39,378 INFO L93 Difference]: Finished difference Result 16009 states and 23458 transitions. [2022-11-19 08:29:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:39,380 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), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-11-19 08:29:39,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:39,514 INFO L225 Difference]: With dead ends: 16009 [2022-11-19 08:29:39,515 INFO L226 Difference]: Without dead ends: 15978 [2022-11-19 08:29:39,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:39,539 INFO L413 NwaCegarLoop]: 3246 mSDtfsCounter, 1994 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 6075 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:39,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1994 Valid, 6075 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 686 Invalid, 4 Unknown, 0 Unchecked, 15.8s Time] [2022-11-19 08:29:39,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15978 states. [2022-11-19 08:29:40,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15978 to 15971. [2022-11-19 08:29:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15971 states, 10626 states have (on average 1.3588368153585544) internal successors, (14439), 10761 states have internal predecessors, (14439), 4481 states have call successors, (4481), 872 states have call predecessors, (4481), 863 states have return successors, (4473), 4443 states have call predecessors, (4473), 4473 states have call successors, (4473) [2022-11-19 08:29:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15971 states to 15971 states and 23393 transitions. [2022-11-19 08:29:40,913 INFO L78 Accepts]: Start accepts. Automaton has 15971 states and 23393 transitions. Word has length 33 [2022-11-19 08:29:40,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:40,914 INFO L495 AbstractCegarLoop]: Abstraction has 15971 states and 23393 transitions. [2022-11-19 08:29:40,914 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), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:29:40,914 INFO L276 IsEmpty]: Start isEmpty. Operand 15971 states and 23393 transitions. [2022-11-19 08:29:40,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 08:29:40,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:40,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1] [2022-11-19 08:29:40,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:29:40,923 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:40,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:40,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1230911031, now seen corresponding path program 1 times [2022-11-19 08:29:40,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:40,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934655130] [2022-11-19 08:29:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:40,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:29:41,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:41,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934655130] [2022-11-19 08:29:41,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934655130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:41,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:41,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:29:41,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638948781] [2022-11-19 08:29:41,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:41,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:29:41,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:41,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:29:41,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:29:41,370 INFO L87 Difference]: Start difference. First operand 15971 states and 23393 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:29:45,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:48,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:52,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:55,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:57,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:01,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:04,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:04,680 INFO L93 Difference]: Finished difference Result 31909 states and 46745 transitions. [2022-11-19 08:30:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:30:04,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-11-19 08:30:04,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:04,781 INFO L225 Difference]: With dead ends: 31909 [2022-11-19 08:30:04,781 INFO L226 Difference]: Without dead ends: 15971 [2022-11-19 08:30:04,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:30:04,910 INFO L413 NwaCegarLoop]: 2879 mSDtfsCounter, 1 mSDsluCounter, 5752 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8631 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:04,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8631 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1038 Invalid, 6 Unknown, 0 Unchecked, 22.6s Time] [2022-11-19 08:30:04,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15971 states. [2022-11-19 08:30:05,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15971 to 15969. [2022-11-19 08:30:05,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15969 states, 10624 states have (on average 1.3588102409638554) internal successors, (14436), 10759 states have internal predecessors, (14436), 4481 states have call successors, (4481), 872 states have call predecessors, (4481), 863 states have return successors, (4473), 4443 states have call predecessors, (4473), 4473 states have call successors, (4473) [2022-11-19 08:30:05,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15969 states to 15969 states and 23390 transitions. [2022-11-19 08:30:05,918 INFO L78 Accepts]: Start accepts. Automaton has 15969 states and 23390 transitions. Word has length 67 [2022-11-19 08:30:05,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:05,919 INFO L495 AbstractCegarLoop]: Abstraction has 15969 states and 23390 transitions. [2022-11-19 08:30:05,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:30:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 15969 states and 23390 transitions. [2022-11-19 08:30:05,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 08:30:05,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:05,925 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:05,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:30:05,925 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:05,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash -157063897, now seen corresponding path program 1 times [2022-11-19 08:30:05,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:05,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88766152] [2022-11-19 08:30:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:05,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:30:06,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:06,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88766152] [2022-11-19 08:30:06,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88766152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:06,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:06,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:30:06,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682613631] [2022-11-19 08:30:06,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:06,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:30:06,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:06,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:30:06,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:06,588 INFO L87 Difference]: Start difference. First operand 15969 states and 23390 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:30:09,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:12,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:17,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:19,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:19,606 INFO L93 Difference]: Finished difference Result 17511 states and 25536 transitions. [2022-11-19 08:30:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:30:19,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2022-11-19 08:30:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:19,751 INFO L225 Difference]: With dead ends: 17511 [2022-11-19 08:30:19,751 INFO L226 Difference]: Without dead ends: 17508 [2022-11-19 08:30:19,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:19,765 INFO L413 NwaCegarLoop]: 4049 mSDtfsCounter, 2398 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2398 SdHoareTripleChecker+Valid, 5949 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:19,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2398 Valid, 5949 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 717 Invalid, 3 Unknown, 0 Unchecked, 12.5s Time] [2022-11-19 08:30:19,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17508 states. [2022-11-19 08:30:20,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17508 to 17504. [2022-11-19 08:30:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17504 states, 11614 states have (on average 1.3536249354227656) internal successors, (15721), 11762 states have internal predecessors, (15721), 4906 states have call successors, (4906), 995 states have call predecessors, (4906), 983 states have return successors, (4898), 4864 states have call predecessors, (4898), 4898 states have call successors, (4898) [2022-11-19 08:30:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17504 states to 17504 states and 25525 transitions. [2022-11-19 08:30:20,752 INFO L78 Accepts]: Start accepts. Automaton has 17504 states and 25525 transitions. Word has length 66 [2022-11-19 08:30:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:20,755 INFO L495 AbstractCegarLoop]: Abstraction has 17504 states and 25525 transitions. [2022-11-19 08:30:20,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:30:20,756 INFO L276 IsEmpty]: Start isEmpty. Operand 17504 states and 25525 transitions. [2022-11-19 08:30:20,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 08:30:20,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:20,759 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:20,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:30:20,759 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:20,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:20,759 INFO L85 PathProgramCache]: Analyzing trace with hash -439048331, now seen corresponding path program 1 times [2022-11-19 08:30:20,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:20,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100592002] [2022-11-19 08:30:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:20,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:30:21,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:21,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100592002] [2022-11-19 08:30:21,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100592002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:21,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:21,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:30:21,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998214929] [2022-11-19 08:30:21,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:21,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:30:21,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:21,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:30:21,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:21,150 INFO L87 Difference]: Start difference. First operand 17504 states and 25525 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-19 08:30:24,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:27,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:29,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:35,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:36,446 INFO L93 Difference]: Finished difference Result 36680 states and 53799 transitions. [2022-11-19 08:30:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:30:36,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 64 [2022-11-19 08:30:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:36,574 INFO L225 Difference]: With dead ends: 36680 [2022-11-19 08:30:36,574 INFO L226 Difference]: Without dead ends: 19209 [2022-11-19 08:30:36,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:36,744 INFO L413 NwaCegarLoop]: 2968 mSDtfsCounter, 517 mSDsluCounter, 2624 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 5592 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:36,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 5592 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 666 Invalid, 4 Unknown, 0 Unchecked, 14.5s Time] [2022-11-19 08:30:36,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19209 states. [2022-11-19 08:30:37,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19209 to 19029. [2022-11-19 08:30:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19029 states, 12717 states have (on average 1.3641582134151136) internal successors, (17348), 12880 states have internal predecessors, (17348), 5328 states have call successors, (5328), 995 states have call predecessors, (5328), 983 states have return successors, (5320), 5281 states have call predecessors, (5320), 5320 states have call successors, (5320) [2022-11-19 08:30:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19029 states to 19029 states and 27996 transitions. [2022-11-19 08:30:37,785 INFO L78 Accepts]: Start accepts. Automaton has 19029 states and 27996 transitions. Word has length 64 [2022-11-19 08:30:37,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:37,786 INFO L495 AbstractCegarLoop]: Abstraction has 19029 states and 27996 transitions. [2022-11-19 08:30:37,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-19 08:30:37,787 INFO L276 IsEmpty]: Start isEmpty. Operand 19029 states and 27996 transitions. [2022-11-19 08:30:37,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-19 08:30:37,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:37,790 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:30:37,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:30:37,790 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:37,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:37,791 INFO L85 PathProgramCache]: Analyzing trace with hash 573906033, now seen corresponding path program 1 times [2022-11-19 08:30:37,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:37,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141225215] [2022-11-19 08:30:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:37,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:38,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:30:38,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:38,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141225215] [2022-11-19 08:30:38,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141225215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:38,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:38,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 08:30:38,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395047735] [2022-11-19 08:30:38,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:38,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:30:38,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:38,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:30:38,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:30:38,661 INFO L87 Difference]: Start difference. First operand 19029 states and 27996 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:30:42,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:49,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:57,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:02,420 INFO L93 Difference]: Finished difference Result 22230 states and 32804 transitions. [2022-11-19 08:31:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:31:02,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 75 [2022-11-19 08:31:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:02,503 INFO L225 Difference]: With dead ends: 22230 [2022-11-19 08:31:02,503 INFO L226 Difference]: Without dead ends: 22227 [2022-11-19 08:31:02,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:31:02,513 INFO L413 NwaCegarLoop]: 4539 mSDtfsCounter, 4531 mSDsluCounter, 7682 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 1367 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4661 SdHoareTripleChecker+Valid, 12221 SdHoareTripleChecker+Invalid, 3532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1367 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:02,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4661 Valid, 12221 Invalid, 3532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1367 Valid, 2162 Invalid, 3 Unknown, 0 Unchecked, 22.9s Time] [2022-11-19 08:31:02,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22227 states. [2022-11-19 08:31:03,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22227 to 20682. [2022-11-19 08:31:03,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20682 states, 13770 states have (on average 1.3591866376180102) internal successors, (18716), 13954 states have internal predecessors, (18716), 5802 states have call successors, (5802), 1121 states have call predecessors, (5802), 1109 states have return successors, (5794), 5752 states have call predecessors, (5794), 5794 states have call successors, (5794) [2022-11-19 08:31:03,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20682 states to 20682 states and 30312 transitions. [2022-11-19 08:31:03,805 INFO L78 Accepts]: Start accepts. Automaton has 20682 states and 30312 transitions. Word has length 75 [2022-11-19 08:31:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:03,806 INFO L495 AbstractCegarLoop]: Abstraction has 20682 states and 30312 transitions. [2022-11-19 08:31:03,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:31:03,806 INFO L276 IsEmpty]: Start isEmpty. Operand 20682 states and 30312 transitions. [2022-11-19 08:31:03,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-19 08:31:03,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:03,814 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:03,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:31:03,815 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash 688638874, now seen corresponding path program 1 times [2022-11-19 08:31:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:03,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482609403] [2022-11-19 08:31:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:03,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 08:31:04,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:04,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482609403] [2022-11-19 08:31:04,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482609403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:04,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:04,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 08:31:04,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674001011] [2022-11-19 08:31:04,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:04,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:31:04,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:04,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:31:04,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:31:04,605 INFO L87 Difference]: Start difference. First operand 20682 states and 30312 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:31:09,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:14,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:16,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:19,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:23,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:36,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:45,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:45,260 INFO L93 Difference]: Finished difference Result 27160 states and 39740 transitions. [2022-11-19 08:31:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:31:45,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 94 [2022-11-19 08:31:45,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:45,410 INFO L225 Difference]: With dead ends: 27160 [2022-11-19 08:31:45,410 INFO L226 Difference]: Without dead ends: 27125 [2022-11-19 08:31:45,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:31:45,425 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 5464 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 8326 mSolverCounterSat, 2403 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5997 SdHoareTripleChecker+Valid, 3971 SdHoareTripleChecker+Invalid, 10732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2403 IncrementalHoareTripleChecker+Valid, 8326 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:45,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5997 Valid, 3971 Invalid, 10732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2403 Valid, 8326 Invalid, 3 Unknown, 0 Unchecked, 39.2s Time] [2022-11-19 08:31:45,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27125 states. [2022-11-19 08:31:46,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27125 to 27018. [2022-11-19 08:31:46,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27018 states, 17935 states have (on average 1.3558962921661555) internal successors, (24318), 18180 states have internal predecessors, (24318), 7619 states have call successors, (7619), 1475 states have call predecessors, (7619), 1463 states have return successors, (7611), 7555 states have call predecessors, (7611), 7611 states have call successors, (7611) [2022-11-19 08:31:46,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27018 states to 27018 states and 39548 transitions. [2022-11-19 08:31:46,892 INFO L78 Accepts]: Start accepts. Automaton has 27018 states and 39548 transitions. Word has length 94 [2022-11-19 08:31:46,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:46,893 INFO L495 AbstractCegarLoop]: Abstraction has 27018 states and 39548 transitions. [2022-11-19 08:31:46,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:31:46,894 INFO L276 IsEmpty]: Start isEmpty. Operand 27018 states and 39548 transitions. [2022-11-19 08:31:46,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-19 08:31:46,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:46,913 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 08:31:46,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:31:46,914 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:46,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:46,914 INFO L85 PathProgramCache]: Analyzing trace with hash 105528537, now seen corresponding path program 1 times [2022-11-19 08:31:46,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:46,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902844524] [2022-11-19 08:31:46,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:46,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:47,064 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:31:47,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508930190] [2022-11-19 08:31:47,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:47,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:31:47,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:31:47,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:31:47,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:31:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:49,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 3393 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:31:49,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:31:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:31:49,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:31:49,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:49,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902844524] [2022-11-19 08:31:49,324 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:31:49,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508930190] [2022-11-19 08:31:49,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508930190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:49,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:49,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:31:49,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068558356] [2022-11-19 08:31:49,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:49,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:31:49,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:49,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:31:49,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:31:49,327 INFO L87 Difference]: Start difference. First operand 27018 states and 39548 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:31:53,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:57,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:59,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:01,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:04,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:11,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:32:16,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:16,707 INFO L93 Difference]: Finished difference Result 57668 states and 84973 transitions. [2022-11-19 08:32:16,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:32:16,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2022-11-19 08:32:16,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:16,856 INFO L225 Difference]: With dead ends: 57668 [2022-11-19 08:32:16,856 INFO L226 Difference]: Without dead ends: 30683 [2022-11-19 08:32:16,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:32:16,960 INFO L413 NwaCegarLoop]: 3686 mSDtfsCounter, 558 mSDsluCounter, 10387 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 14073 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:16,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 14073 Invalid, 1691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1688 Invalid, 3 Unknown, 0 Unchecked, 25.9s Time] [2022-11-19 08:32:16,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30683 states. [2022-11-19 08:32:18,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30683 to 27036. [2022-11-19 08:32:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27036 states, 17950 states have (on average 1.3555988857938719) internal successors, (24333), 18192 states have internal predecessors, (24333), 7619 states have call successors, (7619), 1475 states have call predecessors, (7619), 1466 states have return successors, (7623), 7561 states have call predecessors, (7623), 7611 states have call successors, (7623) [2022-11-19 08:32:18,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27036 states to 27036 states and 39575 transitions. [2022-11-19 08:32:18,809 INFO L78 Accepts]: Start accepts. Automaton has 27036 states and 39575 transitions. Word has length 94 [2022-11-19 08:32:18,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:18,809 INFO L495 AbstractCegarLoop]: Abstraction has 27036 states and 39575 transitions. [2022-11-19 08:32:18,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:32:18,810 INFO L276 IsEmpty]: Start isEmpty. Operand 27036 states and 39575 transitions. [2022-11-19 08:32:18,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-19 08:32:18,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:18,818 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 08:32:18,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:32:19,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:32:19,033 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:32:19,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:19,034 INFO L85 PathProgramCache]: Analyzing trace with hash -466602048, now seen corresponding path program 1 times [2022-11-19 08:32:19,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:19,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998849882] [2022-11-19 08:32:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:19,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:19,190 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:32:19,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470126759] [2022-11-19 08:32:19,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:19,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:32:19,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:32:19,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:32:19,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:32:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:21,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 3397 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 08:32:21,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:32:21,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:32:21,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:32:21,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:21,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998849882] [2022-11-19 08:32:21,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:32:21,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470126759] [2022-11-19 08:32:21,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470126759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:21,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:32:21,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 08:32:21,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773663764] [2022-11-19 08:32:21,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:21,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:32:21,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:21,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:32:21,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:32:21,308 INFO L87 Difference]: Start difference. First operand 27036 states and 39575 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:32:24,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:32:29,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:31,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:34,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:38,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:43,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:32:49,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:32:56,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:56,590 INFO L93 Difference]: Finished difference Result 28681 states and 42177 transitions. [2022-11-19 08:32:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:32:56,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2022-11-19 08:32:56,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:56,700 INFO L225 Difference]: With dead ends: 28681 [2022-11-19 08:32:56,700 INFO L226 Difference]: Without dead ends: 28678 [2022-11-19 08:32:56,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:32:56,712 INFO L413 NwaCegarLoop]: 4541 mSDtfsCounter, 2315 mSDsluCounter, 13094 mSDsCounter, 0 mSdLazyCounter, 5367 mSolverCounterSat, 56 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2445 SdHoareTripleChecker+Valid, 17635 SdHoareTripleChecker+Invalid, 5428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 5367 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:56,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2445 Valid, 17635 Invalid, 5428 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 5367 Invalid, 5 Unknown, 0 Unchecked, 33.8s Time] [2022-11-19 08:32:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28678 states. [2022-11-19 08:32:57,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28678 to 27087. [2022-11-19 08:32:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27087 states, 17981 states have (on average 1.3550970468828207) internal successors, (24366), 18222 states have internal predecessors, (24366), 7627 states have call successors, (7627), 1488 states have call predecessors, (7627), 1478 states have return successors, (7631), 7568 states have call predecessors, (7631), 7619 states have call successors, (7631) [2022-11-19 08:32:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27087 states to 27087 states and 39624 transitions. [2022-11-19 08:32:58,042 INFO L78 Accepts]: Start accepts. Automaton has 27087 states and 39624 transitions. Word has length 95 [2022-11-19 08:32:58,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:58,043 INFO L495 AbstractCegarLoop]: Abstraction has 27087 states and 39624 transitions. [2022-11-19 08:32:58,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:32:58,044 INFO L276 IsEmpty]: Start isEmpty. Operand 27087 states and 39624 transitions. [2022-11-19 08:32:58,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-19 08:32:58,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:58,054 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 08:32:58,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 08:32:58,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-19 08:32:58,267 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:32:58,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:58,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1092764119, now seen corresponding path program 1 times [2022-11-19 08:32:58,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:58,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604091529] [2022-11-19 08:32:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:58,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:58,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:32:58,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715087768] [2022-11-19 08:32:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:58,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:32:58,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:32:58,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:32:58,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:33:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:33:00,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 3433 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:33:00,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:33:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:33:00,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:33:00,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:33:00,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604091529] [2022-11-19 08:33:00,431 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:33:00,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715087768] [2022-11-19 08:33:00,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715087768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:33:00,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:33:00,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:33:00,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428959039] [2022-11-19 08:33:00,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:33:00,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:33:00,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:33:00,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:33:00,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:33:00,434 INFO L87 Difference]: Start difference. First operand 27087 states and 39624 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:33:03,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:33:08,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:12,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:33:14,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:33:14,416 INFO L93 Difference]: Finished difference Result 27096 states and 39629 transitions. [2022-11-19 08:33:14,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:33:14,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 104 [2022-11-19 08:33:14,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:33:14,543 INFO L225 Difference]: With dead ends: 27096 [2022-11-19 08:33:14,543 INFO L226 Difference]: Without dead ends: 27093 [2022-11-19 08:33:14,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:33:14,558 INFO L413 NwaCegarLoop]: 4007 mSDtfsCounter, 2359 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2359 SdHoareTripleChecker+Valid, 5889 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:33:14,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2359 Valid, 5889 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 702 Invalid, 3 Unknown, 0 Unchecked, 12.9s Time] [2022-11-19 08:33:14,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27093 states. [2022-11-19 08:33:16,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27093 to 27082. [2022-11-19 08:33:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27082 states, 17977 states have (on average 1.3550648050286478) internal successors, (24360), 18220 states have internal predecessors, (24360), 7624 states have call successors, (7624), 1487 states have call predecessors, (7624), 1480 states have return successors, (7629), 7566 states have call predecessors, (7629), 7617 states have call successors, (7629) [2022-11-19 08:33:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27082 states to 27082 states and 39613 transitions. [2022-11-19 08:33:16,435 INFO L78 Accepts]: Start accepts. Automaton has 27082 states and 39613 transitions. Word has length 104 [2022-11-19 08:33:16,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:33:16,435 INFO L495 AbstractCegarLoop]: Abstraction has 27082 states and 39613 transitions. [2022-11-19 08:33:16,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:33:16,436 INFO L276 IsEmpty]: Start isEmpty. Operand 27082 states and 39613 transitions. [2022-11-19 08:33:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-19 08:33:16,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:33:16,477 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1] [2022-11-19 08:33:16,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:33:16,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 08:33:16,692 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:33:16,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:33:16,693 INFO L85 PathProgramCache]: Analyzing trace with hash 303370907, now seen corresponding path program 1 times [2022-11-19 08:33:16,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:33:16,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492082430] [2022-11-19 08:33:16,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:33:16,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:33:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:33:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 08:33:17,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:33:17,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492082430] [2022-11-19 08:33:17,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492082430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:33:17,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:33:17,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:33:17,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265952675] [2022-11-19 08:33:17,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:33:17,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:33:17,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:33:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:33:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:33:17,166 INFO L87 Difference]: Start difference. First operand 27082 states and 39613 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-19 08:33:21,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:33:23,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:24,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:27,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:29,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:31,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:33,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:37,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:40,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:33:44,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:33:48,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:33:48,221 INFO L93 Difference]: Finished difference Result 54354 states and 79545 transitions. [2022-11-19 08:33:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:33:48,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 113 [2022-11-19 08:33:48,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:33:48,354 INFO L225 Difference]: With dead ends: 54354 [2022-11-19 08:33:48,354 INFO L226 Difference]: Without dead ends: 27273 [2022-11-19 08:33:48,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:33:48,447 INFO L413 NwaCegarLoop]: 2919 mSDtfsCounter, 72 mSDsluCounter, 8649 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 39 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 11568 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:33:48,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 11568 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1400 Invalid, 5 Unknown, 0 Unchecked, 29.4s Time] [2022-11-19 08:33:48,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27273 states. [2022-11-19 08:33:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27273 to 27104. [2022-11-19 08:33:49,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27104 states, 17988 states have (on average 1.3541805648209917) internal successors, (24359), 18231 states have internal predecessors, (24359), 7635 states have call successors, (7635), 1487 states have call predecessors, (7635), 1480 states have return successors, (7640), 7577 states have call predecessors, (7640), 7628 states have call successors, (7640) [2022-11-19 08:33:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27104 states to 27104 states and 39634 transitions. [2022-11-19 08:33:49,782 INFO L78 Accepts]: Start accepts. Automaton has 27104 states and 39634 transitions. Word has length 113 [2022-11-19 08:33:49,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:33:49,783 INFO L495 AbstractCegarLoop]: Abstraction has 27104 states and 39634 transitions. [2022-11-19 08:33:49,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-19 08:33:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 27104 states and 39634 transitions. [2022-11-19 08:33:49,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-19 08:33:49,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:33:49,798 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 08:33:49,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 08:33:49,798 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:33:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:33:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash -449797319, now seen corresponding path program 1 times [2022-11-19 08:33:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:33:49,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805070522] [2022-11-19 08:33:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:33:49,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:33:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:33:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-19 08:33:50,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:33:50,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805070522] [2022-11-19 08:33:50,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805070522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:33:50,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:33:50,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:33:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778013490] [2022-11-19 08:33:50,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:33:50,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:33:50,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:33:50,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:33:50,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:33:50,341 INFO L87 Difference]: Start difference. First operand 27104 states and 39634 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 08:33:51,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:56,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:33:58,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:03,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:09,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:34:11,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:13,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:15,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:21,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:21,743 INFO L93 Difference]: Finished difference Result 72544 states and 108753 transitions. [2022-11-19 08:34:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:34:21,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 128 [2022-11-19 08:34:21,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:21,947 INFO L225 Difference]: With dead ends: 72544 [2022-11-19 08:34:21,947 INFO L226 Difference]: Without dead ends: 45473 [2022-11-19 08:34:22,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:34:22,060 INFO L413 NwaCegarLoop]: 4622 mSDtfsCounter, 2399 mSDsluCounter, 7883 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 395 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2793 SdHoareTripleChecker+Valid, 12505 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:22,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2793 Valid, 12505 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1419 Invalid, 5 Unknown, 0 Unchecked, 28.7s Time] [2022-11-19 08:34:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45473 states. [2022-11-19 08:34:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45473 to 27148. [2022-11-19 08:34:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27148 states, 18032 states have (on average 1.3533163265306123) internal successors, (24403), 18275 states have internal predecessors, (24403), 7635 states have call successors, (7635), 1487 states have call predecessors, (7635), 1480 states have return successors, (7640), 7577 states have call predecessors, (7640), 7628 states have call successors, (7640) [2022-11-19 08:34:24,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27148 states to 27148 states and 39678 transitions. [2022-11-19 08:34:24,247 INFO L78 Accepts]: Start accepts. Automaton has 27148 states and 39678 transitions. Word has length 128 [2022-11-19 08:34:24,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:24,248 INFO L495 AbstractCegarLoop]: Abstraction has 27148 states and 39678 transitions. [2022-11-19 08:34:24,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 08:34:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 27148 states and 39678 transitions. [2022-11-19 08:34:24,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-19 08:34:24,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:24,263 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1] [2022-11-19 08:34:24,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 08:34:24,263 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:34:24,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:24,264 INFO L85 PathProgramCache]: Analyzing trace with hash -845640014, now seen corresponding path program 1 times [2022-11-19 08:34:24,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:24,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826796570] [2022-11-19 08:34:24,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:24,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-19 08:34:24,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:24,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826796570] [2022-11-19 08:34:24,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826796570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:34:24,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:34:24,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:34:24,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760013883] [2022-11-19 08:34:24,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:34:24,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:34:24,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:24,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:34:24,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:34:24,869 INFO L87 Difference]: Start difference. First operand 27148 states and 39678 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 08:34:27,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:34:31,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:32,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:34,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:39,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:34:43,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:46,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:34:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:47,517 INFO L93 Difference]: Finished difference Result 44469 states and 65937 transitions. [2022-11-19 08:34:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:34:47,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 131 [2022-11-19 08:34:47,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:47,663 INFO L225 Difference]: With dead ends: 44469 [2022-11-19 08:34:47,663 INFO L226 Difference]: Without dead ends: 33537 [2022-11-19 08:34:47,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:34:47,709 INFO L413 NwaCegarLoop]: 3859 mSDtfsCounter, 691 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 6933 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:47,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 6933 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 804 Invalid, 4 Unknown, 0 Unchecked, 20.8s Time] [2022-11-19 08:34:47,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33537 states. [2022-11-19 08:34:49,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33537 to 27150. [2022-11-19 08:34:49,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27150 states, 18034 states have (on average 1.3532771431740047) internal successors, (24405), 18277 states have internal predecessors, (24405), 7635 states have call successors, (7635), 1487 states have call predecessors, (7635), 1480 states have return successors, (7640), 7577 states have call predecessors, (7640), 7628 states have call successors, (7640) [2022-11-19 08:34:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27150 states to 27150 states and 39680 transitions. [2022-11-19 08:34:49,277 INFO L78 Accepts]: Start accepts. Automaton has 27150 states and 39680 transitions. Word has length 131 [2022-11-19 08:34:49,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:49,278 INFO L495 AbstractCegarLoop]: Abstraction has 27150 states and 39680 transitions. [2022-11-19 08:34:49,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 08:34:49,278 INFO L276 IsEmpty]: Start isEmpty. Operand 27150 states and 39680 transitions. [2022-11-19 08:34:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 08:34:49,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:49,294 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1] [2022-11-19 08:34:49,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 08:34:49,295 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:34:49,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:49,295 INFO L85 PathProgramCache]: Analyzing trace with hash 523520002, now seen corresponding path program 1 times [2022-11-19 08:34:49,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:49,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206436974] [2022-11-19 08:34:49,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:49,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-19 08:34:50,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:50,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206436974] [2022-11-19 08:34:50,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206436974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:34:50,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16229610] [2022-11-19 08:34:50,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:50,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:34:50,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:34:50,057 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:34:50,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89cb8d4-9be3-45df-abc1-1e2e7697a3b7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:34:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:52,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 4030 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:34:52,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:34:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 08:34:52,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:34:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-19 08:34:52,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16229610] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:34:52,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [619162833] [2022-11-19 08:34:52,406 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2022-11-19 08:34:52,406 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:34:52,413 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:34:52,419 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:34:52,420 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:35:24,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:35:25,036 INFO L217 Elim1Store]: Index analysis took 866 ms [2022-11-19 08:35:57,381 WARN L233 SmtUtils]: Spent 32.26s on a formula simplification. DAG size of input: 2064 DAG size of output: 1365 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 08:35:57,389 INFO L321 Elim1Store]: treesize reduction 2314, result has 46.8 percent of original size [2022-11-19 08:35:57,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 230 select indices, 230 select index equivalence classes, 26337 disjoint index pairs (out of 26335 index pairs), introduced 230 new quantified variables, introduced 229 case distinctions, treesize of input 1157 treesize of output 2738 [2022-11-19 08:36:02,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:36:03,509 INFO L217 Elim1Store]: Index analysis took 1435 ms [2022-11-19 08:36:49,122 WARN L233 SmtUtils]: Spent 45.54s on a formula simplification. DAG size of input: 2524 DAG size of output: 1377 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 08:36:49,130 INFO L321 Elim1Store]: treesize reduction 4122, result has 33.3 percent of original size [2022-11-19 08:36:49,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 232 select indices, 232 select index equivalence classes, 26567 disjoint index pairs (out of 26796 index pairs), introduced 232 new quantified variables, introduced 458 case distinctions, treesize of input 1167 treesize of output 2773 [2022-11-19 08:37:10,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 08:37:10,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 08:37:18,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:18,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 232 select indices, 232 select index equivalence classes, 26796 disjoint index pairs (out of 26796 index pairs), introduced 232 new quantified variables, introduced 0 case distinctions, treesize of input 1161 treesize of output 697 [2022-11-19 08:37:20,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:20,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 231 select indices, 231 select index equivalence classes, 26566 disjoint index pairs (out of 26565 index pairs), introduced 231 new quantified variables, introduced 0 case distinctions, treesize of input 1156 treesize of output 694 [2022-11-19 08:37:41,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:41,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 232 select indices, 232 select index equivalence classes, 26796 disjoint index pairs (out of 26796 index pairs), introduced 232 new quantified variables, introduced 0 case distinctions, treesize of input 1161 treesize of output 697 [2022-11-19 08:37:43,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:43,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 231 select indices, 231 select index equivalence classes, 26566 disjoint index pairs (out of 26565 index pairs), introduced 231 new quantified variables, introduced 0 case distinctions, treesize of input 1156 treesize of output 694 [2022-11-19 08:37:48,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 08:37:50,207 INFO L321 Elim1Store]: treesize reduction 61, result has 22.8 percent of original size [2022-11-19 08:37:50,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 36 [2022-11-19 08:37:50,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-19 08:37:50,707 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-19 08:37:50,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-19 08:37:50,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:50,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 487 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 215 [2022-11-19 08:37:51,143 INFO L321 Elim1Store]: treesize reduction 62, result has 36.7 percent of original size [2022-11-19 08:37:51,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 38 treesize of output 64 [2022-11-19 08:37:54,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:37:54,655 INFO L217 Elim1Store]: Index analysis took 301 ms [2022-11-19 08:38:00,172 INFO L321 Elim1Store]: treesize reduction 1571, result has 9.4 percent of original size [2022-11-19 08:38:00,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 139 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 309 [2022-11-19 08:38:00,541 INFO L321 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2022-11-19 08:38:00,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 183 treesize of output 177 [2022-11-19 08:38:00,781 INFO L321 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2022-11-19 08:38:00,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2022-11-19 08:38:00,979 INFO L321 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2022-11-19 08:38:00,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2022-11-19 08:38:01,160 INFO L321 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2022-11-19 08:38:01,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2022-11-19 08:38:01,336 INFO L321 Elim1Store]: treesize reduction 56, result has 33.3 percent of original size [2022-11-19 08:38:01,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 51 [2022-11-19 08:38:01,464 INFO L321 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2022-11-19 08:38:01,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 42 [2022-11-19 08:38:02,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:38:02,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 279 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 215 [2022-11-19 08:40:26,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5