./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI --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 65d40b2043e7a83af3849efad1c4fa824e696aef038aa449d52dadf52dd97034 --- 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-5e519f3 [2022-11-03 01:52:27,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:52:27,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:52:27,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:52:27,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:52:27,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:52:27,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:52:27,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:52:27,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:52:27,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:52:27,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:52:27,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:52:27,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:52:27,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:52:27,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:52:27,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:52:27,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:52:27,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:52:27,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:52:27,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:52:27,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:52:27,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:52:27,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:52:27,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:52:27,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:52:27,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:52:27,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:52:27,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:52:27,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:52:27,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:52:27,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:52:27,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:52:27,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:52:27,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:52:27,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:52:27,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:52:27,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:52:27,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:52:27,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:52:27,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:52:27,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:52:27,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:52:27,693 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:52:27,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:52:27,694 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:52:27,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:52:27,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:52:27,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:52:27,696 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:52:27,696 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:52:27,696 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:52:27,697 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:52:27,697 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:52:27,697 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:52:27,697 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:52:27,698 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:52:27,698 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:52:27,698 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:52:27,699 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:52:27,699 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:52:27,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:52:27,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:52:27,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:52:27,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:52:27,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:52:27,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:52:27,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:52:27,702 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:52:27,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:52:27,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:52:27,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:52:27,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:52:27,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:52:27,704 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:52:27,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:52:27,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:52:27,705 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:52:27,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:52:27,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:52:27,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:52:27,706 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_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65d40b2043e7a83af3849efad1c4fa824e696aef038aa449d52dadf52dd97034 [2022-11-03 01:52:28,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:52:28,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:52:28,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:52:28,171 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:52:28,172 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:52:28,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2022-11-03 01:52:28,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/data/3daf2ec15/ce26292cb3c243c48b7f35a41a7d6536/FLAGe27f7bbea [2022-11-03 01:52:29,289 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:52:29,291 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2022-11-03 01:52:29,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/data/3daf2ec15/ce26292cb3c243c48b7f35a41a7d6536/FLAGe27f7bbea [2022-11-03 01:52:29,604 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/data/3daf2ec15/ce26292cb3c243c48b7f35a41a7d6536 [2022-11-03 01:52:29,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:52:29,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:52:29,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:52:29,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:52:29,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:52:29,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:52:29" (1/1) ... [2022-11-03 01:52:29,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c0c4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:29, skipping insertion in model container [2022-11-03 01:52:29,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:52:29" (1/1) ... [2022-11-03 01:52:29,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:52:29,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:52:31,813 WARN L230 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_ca1eca1a-b294-472e-a812-cf68931090d1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i[222868,222881] [2022-11-03 01:52:32,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:52:32,165 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:52:32,619 WARN L230 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_ca1eca1a-b294-472e-a812-cf68931090d1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i[222868,222881] [2022-11-03 01:52:32,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:52:32,835 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:52:32,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:32 WrapperNode [2022-11-03 01:52:32,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:52:32,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:52:32,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:52:32,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:52:32,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:32" (1/1) ... [2022-11-03 01:52:32,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:32" (1/1) ... [2022-11-03 01:52:33,352 INFO L138 Inliner]: procedures = 319, calls = 1696, calls flagged for inlining = 115, calls inlined = 107, statements flattened = 4056 [2022-11-03 01:52:33,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:52:33,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:52:33,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:52:33,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:52:33,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:32" (1/1) ... [2022-11-03 01:52:33,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:32" (1/1) ... [2022-11-03 01:52:33,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:32" (1/1) ... [2022-11-03 01:52:33,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:32" (1/1) ... [2022-11-03 01:52:33,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:32" (1/1) ... [2022-11-03 01:52:33,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:32" (1/1) ... [2022-11-03 01:52:33,812 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:32" (1/1) ... [2022-11-03 01:52:33,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:32" (1/1) ... [2022-11-03 01:52:33,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:52:33,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:52:33,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:52:33,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:52:33,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:32" (1/1) ... [2022-11-03 01:52:33,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:52:33,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:33,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:52:34,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:52:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 01:52:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 01:52:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_fillrect [2022-11-03 01:52:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_fillrect [2022-11-03 01:52:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 01:52:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 01:52:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_submit_urb [2022-11-03 01:52:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_submit_urb [2022-11-03 01:52:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_urb_completion [2022-11-03 01:52:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_urb_completion [2022-11-03 01:52:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:52:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:52:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:52:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:52:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:52:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:52:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_mmap [2022-11-03 01:52:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_mmap [2022-11-03 01:52:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2022-11-03 01:52:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2022-11-03 01:52:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_unlock [2022-11-03 01:52:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_unlock [2022-11-03 01:52:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:52:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:52:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_check_var [2022-11-03 01:52:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_check_var [2022-11-03 01:52:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-03 01:52:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-03 01:52:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_is_valid_mode [2022-11-03 01:52:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_is_valid_mode [2022-11-03 01:52:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_lfsr16 [2022-11-03 01:52:34,076 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_lfsr16 [2022-11-03 01:52:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modelist [2022-11-03 01:52:34,076 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modelist [2022-11-03 01:52:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-03 01:52:34,076 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-03 01:52:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:52:34,077 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:52:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_setcolreg [2022-11-03 01:52:34,077 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_setcolreg [2022-11-03 01:52:34,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:52:34,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:52:34,078 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-03 01:52:34,078 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-03 01:52:34,078 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 01:52:34,079 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 01:52:34,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:52:34,080 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:52:34,080 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_release [2022-11-03 01:52:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_release [2022-11-03 01:52:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:52:34,082 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:52:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_get_urb [2022-11-03 01:52:34,082 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_get_urb [2022-11-03 01:52:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_video_mode [2022-11-03 01:52:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_video_mode [2022-11-03 01:52:34,083 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 01:52:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 01:52:34,083 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:52:34,085 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:52:34,085 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_blank [2022-11-03 01:52:34,085 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_blank [2022-11-03 01:52:34,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:52:34,085 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 01:52:34,085 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 01:52:34,086 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 01:52:34,086 INFO L130 BoogieDeclarations]: Found specification of procedure get_cycles [2022-11-03 01:52:34,086 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cycles [2022-11-03 01:52:34,086 INFO L130 BoogieDeclarations]: Found specification of procedure up [2022-11-03 01:52:34,086 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2022-11-03 01:52:34,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:52:34,087 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_copyarea [2022-11-03 01:52:34,088 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_copyarea [2022-11-03 01:52:34,088 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 01:52:34,088 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:52:34,088 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:52:34,089 INFO L130 BoogieDeclarations]: Found specification of procedure fb_add_videomode [2022-11-03 01:52:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_add_videomode [2022-11-03 01:52:34,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:52:34,089 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2022-11-03 01:52:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2022-11-03 01:52:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:52:34,091 INFO L130 BoogieDeclarations]: Found specification of procedure fb_edid_to_monspecs [2022-11-03 01:52:34,091 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_edid_to_monspecs [2022-11-03 01:52:34,091 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 01:52:34,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 01:52:34,091 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 01:52:34,091 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 01:52:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 01:52:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 01:52:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 01:52:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 01:52:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_setup_modes [2022-11-03 01:52:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_setup_modes [2022-11-03 01:52:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-03 01:52:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-03 01:52:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 01:52:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 01:52:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:52:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_lock [2022-11-03 01:52:34,096 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_lock [2022-11-03 01:52:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 01:52:34,096 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 01:52:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:52:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-03 01:52:34,097 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-03 01:52:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:52:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_fb_info [2022-11-03 01:52:34,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_fb_info [2022-11-03 01:52:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_ioctl [2022-11-03 01:52:34,099 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_ioctl [2022-11-03 01:52:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2022-11-03 01:52:34,103 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2022-11-03 01:52:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:52:34,103 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:52:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_var_color_format [2022-11-03 01:52:34,105 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_var_color_format [2022-11-03 01:52:34,106 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 01:52:34,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 01:52:34,107 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:52:34,111 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:52:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-03 01:52:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-03 01:52:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 01:52:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 01:52:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_handle_damage [2022-11-03 01:52:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_handle_damage [2022-11-03 01:52:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:52:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_render_hline [2022-11-03 01:52:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_render_hline [2022-11-03 01:52:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2022-11-03 01:52:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2022-11-03 01:52:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 01:52:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 01:52:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:52:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:52:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_release_urb_work [2022-11-03 01:52:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_release_urb_work [2022-11-03 01:52:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:52:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:52:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:52:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_blanking [2022-11-03 01:52:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_blanking [2022-11-03 01:52:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:52:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:52:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_16 [2022-11-03 01:52:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_16 [2022-11-03 01:52:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:52:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_imageblit [2022-11-03 01:52:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_imageblit [2022-11-03 01:52:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:52:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:52:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:52:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_open [2022-11-03 01:52:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_open [2022-11-03 01:52:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register [2022-11-03 01:52:34,118 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register [2022-11-03 01:52:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 01:52:34,118 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 01:52:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 01:52:34,118 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 01:52:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_fb_info [2022-11-03 01:52:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_fb_info [2022-11-03 01:52:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-03 01:52:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-03 01:52:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2022-11-03 01:52:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2022-11-03 01:52:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 01:52:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 01:52:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:52:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:52:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_set_par [2022-11-03 01:52:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_set_par [2022-11-03 01:52:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-03 01:52:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-03 01:52:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:52:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-03 01:52:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-03 01:52:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:52:34,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:52:35,069 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:52:35,072 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:52:35,370 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:52:49,116 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:52:51,596 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:52:51,596 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:52:51,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:52:51 BoogieIcfgContainer [2022-11-03 01:52:51,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:52:51,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:52:51,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:52:51,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:52:51,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:52:29" (1/3) ... [2022-11-03 01:52:51,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc2b575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:52:51, skipping insertion in model container [2022-11-03 01:52:51,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:32" (2/3) ... [2022-11-03 01:52:51,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc2b575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:52:51, skipping insertion in model container [2022-11-03 01:52:51,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:52:51" (3/3) ... [2022-11-03 01:52:51,615 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2022-11-03 01:52:51,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:52:51,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:52:51,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:52:51,764 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;@2353b6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:52:51,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:52:51,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 1008 states, 632 states have (on average 1.3623417721518987) internal successors, (861), 663 states have internal predecessors, (861), 294 states have call successors, (294), 81 states have call predecessors, (294), 80 states have return successors, (286), 281 states have call predecessors, (286), 286 states have call successors, (286) [2022-11-03 01:52:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-03 01:52:51,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:51,799 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:51,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:51,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash -438867954, now seen corresponding path program 1 times [2022-11-03 01:52:51,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:51,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67985452] [2022-11-03 01:52:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:51,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2022-11-03 01:52:53,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:53,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67985452] [2022-11-03 01:52:53,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67985452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:53,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:53,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:53,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883059980] [2022-11-03 01:52:53,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:53,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:53,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:53,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:53,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:53,739 INFO L87 Difference]: Start difference. First operand has 1008 states, 632 states have (on average 1.3623417721518987) internal successors, (861), 663 states have internal predecessors, (861), 294 states have call successors, (294), 81 states have call predecessors, (294), 80 states have return successors, (286), 281 states have call predecessors, (286), 286 states have call successors, (286) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-03 01:52:55,617 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 [] [2022-11-03 01:52:59,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:03,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:04,922 INFO L93 Difference]: Finished difference Result 2876 states and 4164 transitions. [2022-11-03 01:53:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:04,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 301 [2022-11-03 01:53:04,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:04,966 INFO L225 Difference]: With dead ends: 2876 [2022-11-03 01:53:04,966 INFO L226 Difference]: Without dead ends: 1903 [2022-11-03 01:53:04,980 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 [2022-11-03 01:53:04,984 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 1302 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:04,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 2878 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 356 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-11-03 01:53:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2022-11-03 01:53:05,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1899. [2022-11-03 01:53:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1210 states have (on average 1.350413223140496) internal successors, (1634), 1246 states have internal predecessors, (1634), 531 states have call successors, (531), 158 states have call predecessors, (531), 157 states have return successors, (528), 514 states have call predecessors, (528), 524 states have call successors, (528) [2022-11-03 01:53:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2693 transitions. [2022-11-03 01:53:05,203 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2693 transitions. Word has length 301 [2022-11-03 01:53:05,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:05,205 INFO L495 AbstractCegarLoop]: Abstraction has 1899 states and 2693 transitions. [2022-11-03 01:53:05,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-03 01:53:05,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2693 transitions. [2022-11-03 01:53:05,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-03 01:53:05,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:05,216 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:05,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:53:05,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:05,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:05,218 INFO L85 PathProgramCache]: Analyzing trace with hash 454273014, now seen corresponding path program 1 times [2022-11-03 01:53:05,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:05,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592124891] [2022-11-03 01:53:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:05,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2022-11-03 01:53:05,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:05,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592124891] [2022-11-03 01:53:05,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592124891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:05,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:05,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:05,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13548702] [2022-11-03 01:53:05,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:05,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:05,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:05,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:05,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:05,922 INFO L87 Difference]: Start difference. First operand 1899 states and 2693 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:53:07,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:10,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:12,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:15,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:17,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:17,062 INFO L93 Difference]: Finished difference Result 5506 states and 7795 transitions. [2022-11-03 01:53:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:17,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 313 [2022-11-03 01:53:17,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:17,107 INFO L225 Difference]: With dead ends: 5506 [2022-11-03 01:53:17,107 INFO L226 Difference]: Without dead ends: 3668 [2022-11-03 01:53:17,121 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 [2022-11-03 01:53:17,126 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 1253 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:17,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 2827 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 356 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2022-11-03 01:53:17,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2022-11-03 01:53:17,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 3653. [2022-11-03 01:53:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 2331 states have (on average 1.3504933504933505) internal successors, (3148), 2397 states have internal predecessors, (3148), 1010 states have call successors, (1010), 312 states have call predecessors, (1010), 311 states have return successors, (1013), 983 states have call predecessors, (1013), 1003 states have call successors, (1013) [2022-11-03 01:53:17,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 5171 transitions. [2022-11-03 01:53:17,469 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 5171 transitions. Word has length 313 [2022-11-03 01:53:17,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:17,470 INFO L495 AbstractCegarLoop]: Abstraction has 3653 states and 5171 transitions. [2022-11-03 01:53:17,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:53:17,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 5171 transitions. [2022-11-03 01:53:17,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 01:53:17,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:17,492 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:17,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:53:17,493 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:17,506 INFO L85 PathProgramCache]: Analyzing trace with hash 639518762, now seen corresponding path program 1 times [2022-11-03 01:53:17,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:17,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734437398] [2022-11-03 01:53:17,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:17,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2022-11-03 01:53:18,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:18,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734437398] [2022-11-03 01:53:18,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734437398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:18,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:18,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:18,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936933237] [2022-11-03 01:53:18,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:18,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:18,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:18,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:18,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:18,329 INFO L87 Difference]: Start difference. First operand 3653 states and 5171 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:53:20,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:22,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:24,756 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 [] [2022-11-03 01:53:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:26,816 INFO L93 Difference]: Finished difference Result 3817 states and 5382 transitions. [2022-11-03 01:53:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:26,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 316 [2022-11-03 01:53:26,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:26,850 INFO L225 Difference]: With dead ends: 3817 [2022-11-03 01:53:26,850 INFO L226 Difference]: Without dead ends: 3814 [2022-11-03 01:53:26,854 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 [2022-11-03 01:53:26,855 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 1331 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:26,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 1548 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 217 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2022-11-03 01:53:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2022-11-03 01:53:27,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 3814. [2022-11-03 01:53:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3814 states, 2433 states have (on average 1.3477188655980272) internal successors, (3279), 2501 states have internal predecessors, (3279), 1046 states have call successors, (1046), 334 states have call predecessors, (1046), 334 states have return successors, (1054), 1020 states have call predecessors, (1054), 1040 states have call successors, (1054) [2022-11-03 01:53:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3814 states to 3814 states and 5379 transitions. [2022-11-03 01:53:27,193 INFO L78 Accepts]: Start accepts. Automaton has 3814 states and 5379 transitions. Word has length 316 [2022-11-03 01:53:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:27,194 INFO L495 AbstractCegarLoop]: Abstraction has 3814 states and 5379 transitions. [2022-11-03 01:53:27,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:53:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3814 states and 5379 transitions. [2022-11-03 01:53:27,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-03 01:53:27,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:27,204 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:27,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:53:27,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:27,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:27,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1650164699, now seen corresponding path program 1 times [2022-11-03 01:53:27,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:27,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008252474] [2022-11-03 01:53:27,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:27,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2022-11-03 01:53:27,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:27,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008252474] [2022-11-03 01:53:27,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008252474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:27,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:27,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:27,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882730255] [2022-11-03 01:53:27,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:27,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:27,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:27,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:27,842 INFO L87 Difference]: Start difference. First operand 3814 states and 5379 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:53:29,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:32,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:34,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:35,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:35,998 INFO L93 Difference]: Finished difference Result 3816 states and 5380 transitions. [2022-11-03 01:53:35,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:35,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 317 [2022-11-03 01:53:36,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:36,032 INFO L225 Difference]: With dead ends: 3816 [2022-11-03 01:53:36,032 INFO L226 Difference]: Without dead ends: 3813 [2022-11-03 01:53:36,035 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 [2022-11-03 01:53:36,037 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 1328 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:36,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 1546 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 217 Invalid, 3 Unknown, 0 Unchecked, 8.0s Time] [2022-11-03 01:53:36,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2022-11-03 01:53:36,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 3813. [2022-11-03 01:53:36,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3813 states, 2433 states have (on average 1.3473078503904645) internal successors, (3278), 2500 states have internal predecessors, (3278), 1045 states have call successors, (1045), 334 states have call predecessors, (1045), 334 states have return successors, (1054), 1020 states have call predecessors, (1054), 1040 states have call successors, (1054) [2022-11-03 01:53:36,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3813 states to 3813 states and 5377 transitions. [2022-11-03 01:53:36,292 INFO L78 Accepts]: Start accepts. Automaton has 3813 states and 5377 transitions. Word has length 317 [2022-11-03 01:53:36,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:36,294 INFO L495 AbstractCegarLoop]: Abstraction has 3813 states and 5377 transitions. [2022-11-03 01:53:36,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:53:36,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3813 states and 5377 transitions. [2022-11-03 01:53:36,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-03 01:53:36,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:36,303 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:36,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:53:36,303 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:36,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:36,304 INFO L85 PathProgramCache]: Analyzing trace with hash 384096909, now seen corresponding path program 1 times [2022-11-03 01:53:36,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:36,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130338176] [2022-11-03 01:53:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:36,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2022-11-03 01:53:36,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:36,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130338176] [2022-11-03 01:53:36,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130338176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:36,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:36,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:36,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039099009] [2022-11-03 01:53:36,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:37,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:37,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:37,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:37,002 INFO L87 Difference]: Start difference. First operand 3813 states and 5377 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:53:39,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:41,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:43,352 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 [] [2022-11-03 01:53:46,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:46,291 INFO L93 Difference]: Finished difference Result 11097 states and 16086 transitions. [2022-11-03 01:53:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:46,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 318 [2022-11-03 01:53:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:46,350 INFO L225 Difference]: With dead ends: 11097 [2022-11-03 01:53:46,350 INFO L226 Difference]: Without dead ends: 7345 [2022-11-03 01:53:46,374 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 [2022-11-03 01:53:46,375 INFO L413 NwaCegarLoop]: 1775 mSDtfsCounter, 1340 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 2940 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:46,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 2940 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 375 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2022-11-03 01:53:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2022-11-03 01:53:46,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 7329. [2022-11-03 01:53:46,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7329 states, 4696 states have (on average 1.3513628620102214) internal successors, (6346), 4823 states have internal predecessors, (6346), 2008 states have call successors, (2008), 629 states have call predecessors, (2008), 624 states have return successors, (2226), 1958 states have call predecessors, (2226), 2002 states have call successors, (2226) [2022-11-03 01:53:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 10580 transitions. [2022-11-03 01:53:46,969 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 10580 transitions. Word has length 318 [2022-11-03 01:53:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:46,973 INFO L495 AbstractCegarLoop]: Abstraction has 7329 states and 10580 transitions. [2022-11-03 01:53:46,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:53:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 10580 transitions. [2022-11-03 01:53:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-03 01:53:46,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:46,982 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:46,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:53:46,983 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:46,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:46,984 INFO L85 PathProgramCache]: Analyzing trace with hash -978297816, now seen corresponding path program 1 times [2022-11-03 01:53:46,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:46,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491846858] [2022-11-03 01:53:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:46,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2022-11-03 01:53:47,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:47,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491846858] [2022-11-03 01:53:47,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491846858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:47,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:47,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:47,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68560091] [2022-11-03 01:53:47,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:47,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:47,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:47,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:47,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:47,723 INFO L87 Difference]: Start difference. First operand 7329 states and 10580 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:53:49,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:52,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:54,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:55,798 INFO L93 Difference]: Finished difference Result 7331 states and 10581 transitions. [2022-11-03 01:53:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:55,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 319 [2022-11-03 01:53:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:55,856 INFO L225 Difference]: With dead ends: 7331 [2022-11-03 01:53:55,856 INFO L226 Difference]: Without dead ends: 7328 [2022-11-03 01:53:55,862 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 [2022-11-03 01:53:55,863 INFO L413 NwaCegarLoop]: 1375 mSDtfsCounter, 1324 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:55,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1330 Valid, 1544 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 217 Invalid, 3 Unknown, 0 Unchecked, 7.7s Time] [2022-11-03 01:53:55,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7328 states. [2022-11-03 01:53:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7328 to 7328. [2022-11-03 01:53:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7328 states, 4696 states have (on average 1.3511499148211243) internal successors, (6345), 4822 states have internal predecessors, (6345), 2007 states have call successors, (2007), 629 states have call predecessors, (2007), 624 states have return successors, (2226), 1958 states have call predecessors, (2226), 2002 states have call successors, (2226) [2022-11-03 01:53:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7328 states to 7328 states and 10578 transitions. [2022-11-03 01:53:56,395 INFO L78 Accepts]: Start accepts. Automaton has 7328 states and 10578 transitions. Word has length 319 [2022-11-03 01:53:56,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:56,396 INFO L495 AbstractCegarLoop]: Abstraction has 7328 states and 10578 transitions. [2022-11-03 01:53:56,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:53:56,397 INFO L276 IsEmpty]: Start isEmpty. Operand 7328 states and 10578 transitions. [2022-11-03 01:53:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:53:56,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:56,405 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:56,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:53:56,405 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash -262856464, now seen corresponding path program 1 times [2022-11-03 01:53:56,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:56,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128007723] [2022-11-03 01:53:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:56,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2022-11-03 01:53:57,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:57,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128007723] [2022-11-03 01:53:57,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128007723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:57,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:57,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:57,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465694096] [2022-11-03 01:53:57,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:57,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:57,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:57,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:57,168 INFO L87 Difference]: Start difference. First operand 7328 states and 10578 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:53:58,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:01,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:03,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:03,404 INFO L93 Difference]: Finished difference Result 7330 states and 10579 transitions. [2022-11-03 01:54:03,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:54:03,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 320 [2022-11-03 01:54:03,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:03,448 INFO L225 Difference]: With dead ends: 7330 [2022-11-03 01:54:03,449 INFO L226 Difference]: Without dead ends: 7321 [2022-11-03 01:54:03,455 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 [2022-11-03 01:54:03,456 INFO L413 NwaCegarLoop]: 1374 mSDtfsCounter, 1324 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:03,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1328 Valid, 1543 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 218 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-03 01:54:03,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7321 states. [2022-11-03 01:54:03,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7321 to 7321. [2022-11-03 01:54:03,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7321 states, 4690 states have (on average 1.350319829424307) internal successors, (6333), 4815 states have internal predecessors, (6333), 2006 states have call successors, (2006), 629 states have call predecessors, (2006), 624 states have return successors, (2226), 1958 states have call predecessors, (2226), 2002 states have call successors, (2226) [2022-11-03 01:54:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7321 states to 7321 states and 10565 transitions. [2022-11-03 01:54:04,017 INFO L78 Accepts]: Start accepts. Automaton has 7321 states and 10565 transitions. Word has length 320 [2022-11-03 01:54:04,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:04,018 INFO L495 AbstractCegarLoop]: Abstraction has 7321 states and 10565 transitions. [2022-11-03 01:54:04,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:54:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 7321 states and 10565 transitions. [2022-11-03 01:54:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-11-03 01:54:04,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:04,024 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:04,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:54:04,025 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:04,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1300732226, now seen corresponding path program 1 times [2022-11-03 01:54:04,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:54:04,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299759878] [2022-11-03 01:54:04,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:04,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:54:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-11-03 01:54:05,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:54:05,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299759878] [2022-11-03 01:54:05,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299759878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:05,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:05,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:54:05,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575979224] [2022-11-03 01:54:05,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:05,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:05,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:54:05,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:05,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:05,645 INFO L87 Difference]: Start difference. First operand 7321 states and 10565 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 01:54:07,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:09,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:11,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:12,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:14,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:17,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:22,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:22,431 INFO L93 Difference]: Finished difference Result 21616 states and 31836 transitions. [2022-11-03 01:54:22,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:54:22,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 349 [2022-11-03 01:54:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:22,524 INFO L225 Difference]: With dead ends: 21616 [2022-11-03 01:54:22,524 INFO L226 Difference]: Without dead ends: 14356 [2022-11-03 01:54:22,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:22,567 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 1826 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 156 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:22,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 3349 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1071 Invalid, 3 Unknown, 0 Unchecked, 15.8s Time] [2022-11-03 01:54:22,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14356 states. [2022-11-03 01:54:23,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14356 to 14239. [2022-11-03 01:54:23,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14239 states, 9152 states have (on average 1.3548951048951048) internal successors, (12400), 9397 states have internal predecessors, (12400), 3886 states have call successors, (3886), 1209 states have call predecessors, (3886), 1200 states have return successors, (4910), 3786 states have call predecessors, (4910), 3882 states have call successors, (4910) [2022-11-03 01:54:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14239 states to 14239 states and 21196 transitions. [2022-11-03 01:54:23,787 INFO L78 Accepts]: Start accepts. Automaton has 14239 states and 21196 transitions. Word has length 349 [2022-11-03 01:54:23,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:23,789 INFO L495 AbstractCegarLoop]: Abstraction has 14239 states and 21196 transitions. [2022-11-03 01:54:23,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 01:54:23,789 INFO L276 IsEmpty]: Start isEmpty. Operand 14239 states and 21196 transitions. [2022-11-03 01:54:23,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-11-03 01:54:23,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:23,796 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:23,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:54:23,797 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:23,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:23,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1026534878, now seen corresponding path program 1 times [2022-11-03 01:54:23,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:54:23,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750585250] [2022-11-03 01:54:23,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:23,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:54:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-11-03 01:54:25,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:54:25,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750585250] [2022-11-03 01:54:25,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750585250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:25,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:25,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:54:25,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193805882] [2022-11-03 01:54:25,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:25,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:25,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:54:25,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:25,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:25,263 INFO L87 Difference]: Start difference. First operand 14239 states and 21196 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 01:54:27,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:29,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:32,037 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 [] [2022-11-03 01:54:37,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:37,695 INFO L93 Difference]: Finished difference Result 28531 states and 42423 transitions. [2022-11-03 01:54:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:54:37,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 348 [2022-11-03 01:54:37,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:37,797 INFO L225 Difference]: With dead ends: 28531 [2022-11-03 01:54:37,797 INFO L226 Difference]: Without dead ends: 14353 [2022-11-03 01:54:37,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:37,877 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 1346 mSDsluCounter, 2916 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 151 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 4189 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:37,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 4189 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1122 Invalid, 3 Unknown, 0 Unchecked, 11.4s Time] [2022-11-03 01:54:37,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14353 states. [2022-11-03 01:54:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14353 to 14236. [2022-11-03 01:54:39,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14236 states, 9151 states have (on average 1.354168943284887) internal successors, (12392), 9396 states have internal predecessors, (12392), 3880 states have call successors, (3880), 1213 states have call predecessors, (3880), 1204 states have return successors, (4880), 3780 states have call predecessors, (4880), 3876 states have call successors, (4880) [2022-11-03 01:54:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14236 states to 14236 states and 21152 transitions. [2022-11-03 01:54:39,281 INFO L78 Accepts]: Start accepts. Automaton has 14236 states and 21152 transitions. Word has length 348 [2022-11-03 01:54:39,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:39,282 INFO L495 AbstractCegarLoop]: Abstraction has 14236 states and 21152 transitions. [2022-11-03 01:54:39,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 01:54:39,283 INFO L276 IsEmpty]: Start isEmpty. Operand 14236 states and 21152 transitions. [2022-11-03 01:54:39,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-03 01:54:39,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:39,292 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:39,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:54:39,293 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:39,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1586851637, now seen corresponding path program 1 times [2022-11-03 01:54:39,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:54:39,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944500508] [2022-11-03 01:54:39,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:39,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:54:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-11-03 01:54:40,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:54:40,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944500508] [2022-11-03 01:54:40,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944500508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:40,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:40,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:54:40,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5435952] [2022-11-03 01:54:40,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:40,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:40,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:54:40,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:40,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:40,790 INFO L87 Difference]: Start difference. First operand 14236 states and 21152 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 01:54:43,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:45,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:48,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:50,735 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 [] [2022-11-03 01:54:56,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:56,524 INFO L93 Difference]: Finished difference Result 28499 states and 42311 transitions. [2022-11-03 01:54:56,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:54:56,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 347 [2022-11-03 01:54:56,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:56,753 INFO L225 Difference]: With dead ends: 28499 [2022-11-03 01:54:56,754 INFO L226 Difference]: Without dead ends: 14337 [2022-11-03 01:54:56,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:56,808 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 1352 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 101 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 4320 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:56,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 4320 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1750 Invalid, 4 Unknown, 0 Unchecked, 14.7s Time] [2022-11-03 01:54:56,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14337 states. [2022-11-03 01:54:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14337 to 14220. [2022-11-03 01:54:58,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14220 states, 9143 states have (on average 1.3536038499398446) internal successors, (12376), 9388 states have internal predecessors, (12376), 3872 states have call successors, (3872), 1213 states have call predecessors, (3872), 1204 states have return successors, (4848), 3772 states have call predecessors, (4848), 3868 states have call successors, (4848) [2022-11-03 01:54:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14220 states to 14220 states and 21096 transitions. [2022-11-03 01:54:58,225 INFO L78 Accepts]: Start accepts. Automaton has 14220 states and 21096 transitions. Word has length 347 [2022-11-03 01:54:58,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:58,225 INFO L495 AbstractCegarLoop]: Abstraction has 14220 states and 21096 transitions. [2022-11-03 01:54:58,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 01:54:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 14220 states and 21096 transitions. [2022-11-03 01:54:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-11-03 01:54:58,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:58,234 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:58,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 01:54:58,234 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:58,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:58,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1726082119, now seen corresponding path program 1 times [2022-11-03 01:54:58,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:54:58,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482480919] [2022-11-03 01:54:58,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:58,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:54:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-11-03 01:54:59,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:54:59,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482480919] [2022-11-03 01:54:59,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482480919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:59,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:59,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:54:59,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072293623] [2022-11-03 01:54:59,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:59,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:59,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:54:59,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:59,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:59,718 INFO L87 Difference]: Start difference. First operand 14220 states and 21096 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 01:55:01,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:04,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:06,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:11,795 INFO L93 Difference]: Finished difference Result 28467 states and 42199 transitions. [2022-11-03 01:55:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:55:11,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 350 [2022-11-03 01:55:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:11,885 INFO L225 Difference]: With dead ends: 28467 [2022-11-03 01:55:11,885 INFO L226 Difference]: Without dead ends: 14321 [2022-11-03 01:55:11,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:55:11,939 INFO L413 NwaCegarLoop]: 1791 mSDtfsCounter, 1338 mSDsluCounter, 3097 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 145 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 4492 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:11,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 4492 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1181 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2022-11-03 01:55:11,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14321 states. [2022-11-03 01:55:12,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14321 to 14204. [2022-11-03 01:55:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14204 states, 9135 states have (on average 1.3530377668308702) internal successors, (12360), 9380 states have internal predecessors, (12360), 3864 states have call successors, (3864), 1213 states have call predecessors, (3864), 1204 states have return successors, (4816), 3764 states have call predecessors, (4816), 3860 states have call successors, (4816) [2022-11-03 01:55:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14204 states to 14204 states and 21040 transitions. [2022-11-03 01:55:12,935 INFO L78 Accepts]: Start accepts. Automaton has 14204 states and 21040 transitions. Word has length 350 [2022-11-03 01:55:12,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:12,936 INFO L495 AbstractCegarLoop]: Abstraction has 14204 states and 21040 transitions. [2022-11-03 01:55:12,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 01:55:12,937 INFO L276 IsEmpty]: Start isEmpty. Operand 14204 states and 21040 transitions. [2022-11-03 01:55:12,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2022-11-03 01:55:12,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:12,946 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:12,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:55:12,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:12,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:12,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1889404921, now seen corresponding path program 1 times [2022-11-03 01:55:12,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:12,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222985163] [2022-11-03 01:55:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:12,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1508 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1508 trivial. 0 not checked. [2022-11-03 01:55:14,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:14,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222985163] [2022-11-03 01:55:14,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222985163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:14,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:14,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:55:14,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926532612] [2022-11-03 01:55:14,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:14,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:55:14,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:14,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:55:14,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:55:14,746 INFO L87 Difference]: Start difference. First operand 14204 states and 21040 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 4 states have call successors, (50), 5 states have call predecessors, (50), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-11-03 01:55:16,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:20,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:22,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:24,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:26,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:28,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:30,418 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 [] [2022-11-03 01:55:35,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:35,762 INFO L93 Difference]: Finished difference Result 27568 states and 40983 transitions. [2022-11-03 01:55:35,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:55:35,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 4 states have call successors, (50), 5 states have call predecessors, (50), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 376 [2022-11-03 01:55:35,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:35,844 INFO L225 Difference]: With dead ends: 27568 [2022-11-03 01:55:35,845 INFO L226 Difference]: Without dead ends: 13438 [2022-11-03 01:55:35,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:55:35,908 INFO L413 NwaCegarLoop]: 1204 mSDtfsCounter, 21 mSDsluCounter, 6788 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 16 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 7181 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:35,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 7181 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1048 Invalid, 7 Unknown, 0 Unchecked, 20.0s Time] [2022-11-03 01:55:35,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13438 states. [2022-11-03 01:55:36,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13438 to 13438. [2022-11-03 01:55:36,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13438 states, 8695 states have (on average 1.3442208165612421) internal successors, (11688), 8852 states have internal predecessors, (11688), 3570 states have call successors, (3570), 1179 states have call predecessors, (3570), 1172 states have return successors, (3906), 3536 states have call predecessors, (3906), 3566 states have call successors, (3906) [2022-11-03 01:55:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13438 states to 13438 states and 19164 transitions. [2022-11-03 01:55:37,007 INFO L78 Accepts]: Start accepts. Automaton has 13438 states and 19164 transitions. Word has length 376 [2022-11-03 01:55:37,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:37,008 INFO L495 AbstractCegarLoop]: Abstraction has 13438 states and 19164 transitions. [2022-11-03 01:55:37,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 4 states have call successors, (50), 5 states have call predecessors, (50), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-11-03 01:55:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 13438 states and 19164 transitions. [2022-11-03 01:55:37,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-11-03 01:55:37,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:37,022 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:37,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 01:55:37,022 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:37,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:37,023 INFO L85 PathProgramCache]: Analyzing trace with hash -51594789, now seen corresponding path program 1 times [2022-11-03 01:55:37,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:37,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651255838] [2022-11-03 01:55:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:37,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2049 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2044 trivial. 0 not checked. [2022-11-03 01:55:37,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:37,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651255838] [2022-11-03 01:55:37,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651255838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:37,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:37,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:55:37,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280200794] [2022-11-03 01:55:37,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:37,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:37,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:37,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:37,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:37,635 INFO L87 Difference]: Start difference. First operand 13438 states and 19164 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-03 01:55:39,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:42,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:44,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:48,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:48,637 INFO L93 Difference]: Finished difference Result 33116 states and 47238 transitions. [2022-11-03 01:55:48,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:55:48,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 393 [2022-11-03 01:55:48,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:48,740 INFO L225 Difference]: With dead ends: 33116 [2022-11-03 01:55:48,741 INFO L226 Difference]: Without dead ends: 19752 [2022-11-03 01:55:48,784 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 [2022-11-03 01:55:48,785 INFO L413 NwaCegarLoop]: 2295 mSDtfsCounter, 1236 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 3494 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:48,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 3494 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 488 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2022-11-03 01:55:48,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19752 states. [2022-11-03 01:55:50,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19752 to 19736. [2022-11-03 01:55:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19736 states, 12779 states have (on average 1.3440801314656858) internal successors, (17176), 13008 states have internal predecessors, (17176), 5232 states have call successors, (5232), 1733 states have call predecessors, (5232), 1724 states have return successors, (5728), 5184 states have call predecessors, (5728), 5228 states have call successors, (5728) [2022-11-03 01:55:50,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19736 states to 19736 states and 28136 transitions. [2022-11-03 01:55:50,102 INFO L78 Accepts]: Start accepts. Automaton has 19736 states and 28136 transitions. Word has length 393 [2022-11-03 01:55:50,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:50,103 INFO L495 AbstractCegarLoop]: Abstraction has 19736 states and 28136 transitions. [2022-11-03 01:55:50,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-03 01:55:50,103 INFO L276 IsEmpty]: Start isEmpty. Operand 19736 states and 28136 transitions. [2022-11-03 01:55:50,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-11-03 01:55:50,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:50,118 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:50,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 01:55:50,118 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:50,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:50,119 INFO L85 PathProgramCache]: Analyzing trace with hash -614824970, now seen corresponding path program 1 times [2022-11-03 01:55:50,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:50,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155196819] [2022-11-03 01:55:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:50,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1508 trivial. 0 not checked. [2022-11-03 01:55:50,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:50,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155196819] [2022-11-03 01:55:50,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155196819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:50,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:50,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:55:50,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555029061] [2022-11-03 01:55:50,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:50,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:50,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:50,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:50,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:50,635 INFO L87 Difference]: Start difference. First operand 19736 states and 28136 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-03 01:55:52,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:55,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:57,177 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 [] [2022-11-03 01:56:01,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:01,667 INFO L93 Difference]: Finished difference Result 52956 states and 74916 transitions. [2022-11-03 01:56:01,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:01,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 396 [2022-11-03 01:56:01,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:01,828 INFO L225 Difference]: With dead ends: 52956 [2022-11-03 01:56:01,828 INFO L226 Difference]: Without dead ends: 33294 [2022-11-03 01:56:01,909 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 [2022-11-03 01:56:01,910 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 1112 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:01,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 2640 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 423 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2022-11-03 01:56:01,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33294 states. [2022-11-03 01:56:04,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33294 to 33272. [2022-11-03 01:56:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33272 states, 21455 states have (on average 1.332463295269168) internal successors, (28588), 21904 states have internal predecessors, (28588), 8808 states have call successors, (8808), 3025 states have call predecessors, (8808), 3008 states have return successors, (9440), 8712 states have call predecessors, (9440), 8804 states have call successors, (9440) [2022-11-03 01:56:04,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33272 states to 33272 states and 46836 transitions. [2022-11-03 01:56:04,604 INFO L78 Accepts]: Start accepts. Automaton has 33272 states and 46836 transitions. Word has length 396 [2022-11-03 01:56:04,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:04,605 INFO L495 AbstractCegarLoop]: Abstraction has 33272 states and 46836 transitions. [2022-11-03 01:56:04,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-03 01:56:04,605 INFO L276 IsEmpty]: Start isEmpty. Operand 33272 states and 46836 transitions. [2022-11-03 01:56:04,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-03 01:56:04,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:04,621 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:04,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 01:56:04,621 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:04,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:04,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2053049325, now seen corresponding path program 1 times [2022-11-03 01:56:04,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:04,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124252192] [2022-11-03 01:56:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:04,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1508 trivial. 0 not checked. [2022-11-03 01:56:05,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:05,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124252192] [2022-11-03 01:56:05,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124252192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:05,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:05,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:56:05,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254091831] [2022-11-03 01:56:05,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:05,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:56:05,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:05,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:56:05,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:05,367 INFO L87 Difference]: Start difference. First operand 33272 states and 46836 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-03 01:56:07,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:09,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:11,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:17,865 INFO L93 Difference]: Finished difference Result 92962 states and 130690 transitions. [2022-11-03 01:56:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:17,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 407 [2022-11-03 01:56:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:18,280 INFO L225 Difference]: With dead ends: 92962 [2022-11-03 01:56:18,281 INFO L226 Difference]: Without dead ends: 59764 [2022-11-03 01:56:18,405 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 [2022-11-03 01:56:18,406 INFO L413 NwaCegarLoop]: 1939 mSDtfsCounter, 1086 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:18,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 3150 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 434 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2022-11-03 01:56:18,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59764 states. [2022-11-03 01:56:22,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59764 to 59720. [2022-11-03 01:56:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59720 states, 38951 states have (on average 1.3359348925573156) internal successors, (52036), 39600 states have internal predecessors, (52036), 15292 states have call successors, (15292), 5509 states have call predecessors, (15292), 5476 states have return successors, (16536), 15180 states have call predecessors, (16536), 15288 states have call successors, (16536) [2022-11-03 01:56:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59720 states to 59720 states and 83864 transitions. [2022-11-03 01:56:23,356 INFO L78 Accepts]: Start accepts. Automaton has 59720 states and 83864 transitions. Word has length 407 [2022-11-03 01:56:23,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:23,358 INFO L495 AbstractCegarLoop]: Abstraction has 59720 states and 83864 transitions. [2022-11-03 01:56:23,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-03 01:56:23,358 INFO L276 IsEmpty]: Start isEmpty. Operand 59720 states and 83864 transitions. [2022-11-03 01:56:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-11-03 01:56:23,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:23,413 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:23,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 01:56:23,413 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:23,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1190879718, now seen corresponding path program 1 times [2022-11-03 01:56:23,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:23,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779157695] [2022-11-03 01:56:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:23,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2064 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1989 trivial. 0 not checked. [2022-11-03 01:56:25,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:25,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779157695] [2022-11-03 01:56:25,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779157695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:25,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040588888] [2022-11-03 01:56:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:25,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:25,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:25,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:25,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:56:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:28,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 4230 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:56:28,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2064 backedges. 655 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-03 01:56:28,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:28,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040588888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:28,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:56:28,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-11-03 01:56:28,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505737752] [2022-11-03 01:56:28,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:28,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:56:28,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:28,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:56:28,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:28,223 INFO L87 Difference]: Start difference. First operand 59720 states and 83864 transitions. Second operand has 6 states, 4 states have (on average 24.25) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 01:56:30,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:33,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:35,430 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 [] [2022-11-03 01:56:43,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:43,041 INFO L93 Difference]: Finished difference Result 119570 states and 168551 transitions. [2022-11-03 01:56:43,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:56:43,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 24.25) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 406 [2022-11-03 01:56:43,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:43,365 INFO L225 Difference]: With dead ends: 119570 [2022-11-03 01:56:43,365 INFO L226 Difference]: Without dead ends: 59883 [2022-11-03 01:56:43,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:56:43,592 INFO L413 NwaCegarLoop]: 1199 mSDtfsCounter, 3 mSDsluCounter, 5398 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5954 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:43,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5954 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 942 Invalid, 3 Unknown, 0 Unchecked, 10.9s Time] [2022-11-03 01:56:43,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59883 states. [2022-11-03 01:56:47,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59883 to 59849. [2022-11-03 01:56:47,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59849 states, 39016 states have (on average 1.3370155833504203) internal successors, (52165), 39729 states have internal predecessors, (52165), 15292 states have call successors, (15292), 5509 states have call predecessors, (15292), 5540 states have return successors, (16600), 15180 states have call predecessors, (16600), 15288 states have call successors, (16600) [2022-11-03 01:56:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59849 states to 59849 states and 84057 transitions. [2022-11-03 01:56:47,702 INFO L78 Accepts]: Start accepts. Automaton has 59849 states and 84057 transitions. Word has length 406 [2022-11-03 01:56:47,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:47,703 INFO L495 AbstractCegarLoop]: Abstraction has 59849 states and 84057 transitions. [2022-11-03 01:56:47,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 24.25) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 01:56:47,703 INFO L276 IsEmpty]: Start isEmpty. Operand 59849 states and 84057 transitions. [2022-11-03 01:56:47,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-11-03 01:56:47,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:47,731 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:47,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:47,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 01:56:47,947 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:47,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1253921930, now seen corresponding path program 1 times [2022-11-03 01:56:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:47,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461048531] [2022-11-03 01:56:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:47,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2440 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 2319 trivial. 0 not checked. [2022-11-03 01:56:50,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:50,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461048531] [2022-11-03 01:56:50,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461048531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:50,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010833570] [2022-11-03 01:56:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:50,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:50,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:50,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:50,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1eca1a-b294-472e-a812-cf68931090d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:56:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:53,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 4470 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-03 01:56:53,490 INFO L286 TraceCheckSpWp]: Computing forward predicates...