./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/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_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/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_23e49fdd-7edf-4781-a8f7-5699795c66d1/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 bf300fda993e6da191f561c0f8e677f22a7de271b61b51439ca8ec3e0ecdedef --- 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 03:44:34,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:44:34,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:44:34,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:44:34,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:44:34,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:44:34,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:44:34,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:44:34,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:44:34,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:44:34,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:44:34,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:44:34,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:44:34,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:44:34,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:44:34,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:44:34,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:44:34,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:44:34,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:44:34,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:44:34,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:44:34,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:44:34,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:44:34,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:44:34,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:44:34,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:44:34,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:44:34,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:44:34,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:44:34,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:44:34,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:44:34,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:44:34,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:44:34,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:44:34,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:44:34,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:44:34,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:44:34,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:44:34,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:44:34,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:44:34,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:44:34,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:44:34,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:44:34,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:44:34,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:44:34,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:44:34,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:44:34,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:44:34,763 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:44:34,764 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:44:34,764 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:44:34,764 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:44:34,764 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:44:34,765 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:44:34,765 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:44:34,765 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:44:34,766 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:44:34,766 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:44:34,766 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:44:34,766 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:44:34,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:44:34,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:44:34,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:44:34,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:44:34,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:44:34,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:44:34,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:44:34,769 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:44:34,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:44:34,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:44:34,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:44:34,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:44:34,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:44:34,771 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:44:34,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:44:34,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:44:34,772 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:44:34,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:44:34,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:44:34,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:44:34,773 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_23e49fdd-7edf-4781-a8f7-5699795c66d1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf300fda993e6da191f561c0f8e677f22a7de271b61b51439ca8ec3e0ecdedef [2022-11-03 03:44:35,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:44:35,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:44:35,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:44:35,170 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:44:35,171 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:44:35,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2022-11-03 03:44:35,262 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/data/23961427b/7c5318b33f594945ad3686b4026f072c/FLAG561ae8124 [2022-11-03 03:44:36,141 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:44:36,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2022-11-03 03:44:36,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/data/23961427b/7c5318b33f594945ad3686b4026f072c/FLAG561ae8124 [2022-11-03 03:44:36,700 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/data/23961427b/7c5318b33f594945ad3686b4026f072c [2022-11-03 03:44:36,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:44:36,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:44:36,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:44:36,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:44:36,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:44:36,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:36" (1/1) ... [2022-11-03 03:44:36,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bfc7b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:36, skipping insertion in model container [2022-11-03 03:44:36,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:36" (1/1) ... [2022-11-03 03:44:36,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:44:36,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:44:38,081 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_23e49fdd-7edf-4781-a8f7-5699795c66d1/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i[120339,120352] [2022-11-03 03:44:38,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:44:38,162 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:44:38,475 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_23e49fdd-7edf-4781-a8f7-5699795c66d1/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i[120339,120352] [2022-11-03 03:44:38,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:44:38,592 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:44:38,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38 WrapperNode [2022-11-03 03:44:38,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:44:38,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:44:38,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:44:38,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:44:38,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38" (1/1) ... [2022-11-03 03:44:38,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38" (1/1) ... [2022-11-03 03:44:38,813 INFO L138 Inliner]: procedures = 152, calls = 622, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 1714 [2022-11-03 03:44:38,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:44:38,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:44:38,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:44:38,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:44:38,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38" (1/1) ... [2022-11-03 03:44:38,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38" (1/1) ... [2022-11-03 03:44:38,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38" (1/1) ... [2022-11-03 03:44:38,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38" (1/1) ... [2022-11-03 03:44:38,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38" (1/1) ... [2022-11-03 03:44:39,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38" (1/1) ... [2022-11-03 03:44:39,040 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38" (1/1) ... [2022-11-03 03:44:39,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38" (1/1) ... [2022-11-03 03:44:39,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:44:39,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:44:39,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:44:39,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:44:39,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38" (1/1) ... [2022-11-03 03:44:39,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:44:39,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:44:39,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:44:39,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:44:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 03:44:39,217 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 03:44:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_alloc_resource [2022-11-03 03:44:39,218 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_alloc_resource [2022-11-03 03:44:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure add_interval [2022-11-03 03:44:39,218 INFO L138 BoogieDeclarations]: Found implementation of procedure add_interval [2022-11-03 03:44:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:44:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure sub_interval [2022-11-03 03:44:39,219 INFO L138 BoogieDeclarations]: Found implementation of procedure sub_interval [2022-11-03 03:44:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:44:39,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:44:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_find_mem_region [2022-11-03 03:44:39,220 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_find_mem_region [2022-11-03 03:44:39,220 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:44:39,220 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:44:39,220 INFO L130 BoogieDeclarations]: Found specification of procedure free_region [2022-11-03 03:44:39,220 INFO L138 BoogieDeclarations]: Found implementation of procedure free_region [2022-11-03 03:44:39,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:44:39,221 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:44:39,221 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:44:39,221 INFO L130 BoogieDeclarations]: Found specification of procedure __nonstatic_adjust_io_region [2022-11-03 03:44:39,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __nonstatic_adjust_io_region [2022-11-03 03:44:39,222 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:44:39,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:44:39,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:44:39,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:44:39,222 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_release_resource_db [2022-11-03 03:44:39,222 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_release_resource_db [2022-11-03 03:44:39,223 INFO L130 BoogieDeclarations]: Found specification of procedure do_mem_probe [2022-11-03 03:44:39,223 INFO L138 BoogieDeclarations]: Found implementation of procedure do_mem_probe [2022-11-03 03:44:39,224 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_make_resource [2022-11-03 03:44:39,224 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_make_resource [2022-11-03 03:44:39,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:44:39,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:44:39,224 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_init [2022-11-03 03:44:39,225 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_init [2022-11-03 03:44:39,225 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_find_io [2022-11-03 03:44:39,225 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_find_io [2022-11-03 03:44:39,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:44:39,225 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 03:44:39,226 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 03:44:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure pccard_sysfs_add_rsrc [2022-11-03 03:44:39,226 INFO L138 BoogieDeclarations]: Found implementation of procedure pccard_sysfs_add_rsrc [2022-11-03 03:44:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:44:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure static_init [2022-11-03 03:44:39,227 INFO L138 BoogieDeclarations]: Found implementation of procedure static_init [2022-11-03 03:44:39,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:44:39,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:44:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure do_validate_mem [2022-11-03 03:44:39,230 INFO L138 BoogieDeclarations]: Found implementation of procedure do_validate_mem [2022-11-03 03:44:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_resource [2022-11-03 03:44:39,231 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_resource [2022-11-03 03:44:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_nonstatic_validate_mem [2022-11-03 03:44:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_nonstatic_validate_mem [2022-11-03 03:44:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:44:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure static_find_io [2022-11-03 03:44:39,233 INFO L138 BoogieDeclarations]: Found implementation of procedure static_find_io [2022-11-03 03:44:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-03 03:44:39,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-03 03:44:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure show_mem_db [2022-11-03 03:44:39,234 INFO L138 BoogieDeclarations]: Found implementation of procedure show_mem_db [2022-11-03 03:44:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_io [2022-11-03 03:44:39,234 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_io [2022-11-03 03:44:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:44:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 03:44:39,235 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 03:44:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:44:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:44:39,235 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:44:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:44:39,236 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:44:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:44:39,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:44:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-03 03:44:39,237 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-03 03:44:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:44:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2022-11-03 03:44:39,238 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2022-11-03 03:44:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pccard_static_ops_release_6 [2022-11-03 03:44:39,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pccard_static_ops_release_6 [2022-11-03 03:44:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_memory [2022-11-03 03:44:39,239 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_memory [2022-11-03 03:44:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_resource [2022-11-03 03:44:39,240 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_resource [2022-11-03 03:44:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pccard_static_ops_release_7 [2022-11-03 03:44:39,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pccard_static_ops_release_7 [2022-11-03 03:44:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:44:39,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:44:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ops_mutex_of_pcmcia_socket [2022-11-03 03:44:39,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ops_mutex_of_pcmcia_socket [2022-11-03 03:44:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure claim_region [2022-11-03 03:44:39,243 INFO L138 BoogieDeclarations]: Found implementation of procedure claim_region [2022-11-03 03:44:39,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ops_mutex_of_pcmcia_socket [2022-11-03 03:44:39,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ops_mutex_of_pcmcia_socket [2022-11-03 03:44:39,244 INFO L130 BoogieDeclarations]: Found specification of procedure show_io_db [2022-11-03 03:44:39,244 INFO L138 BoogieDeclarations]: Found implementation of procedure show_io_db [2022-11-03 03:44:39,980 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:44:39,984 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:44:42,000 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:44:42,696 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:44:42,696 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:44:42,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:42 BoogieIcfgContainer [2022-11-03 03:44:42,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:44:42,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:44:42,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:44:42,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:44:42,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:44:36" (1/3) ... [2022-11-03 03:44:42,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f216a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:42, skipping insertion in model container [2022-11-03 03:44:42,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38" (2/3) ... [2022-11-03 03:44:42,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f216a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:42, skipping insertion in model container [2022-11-03 03:44:42,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:42" (3/3) ... [2022-11-03 03:44:42,736 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2022-11-03 03:44:42,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:44:42,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:44:42,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:44:42,837 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;@78462541, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:44:42,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:44:42,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 524 states, 357 states have (on average 1.4705882352941178) internal successors, (525), 366 states have internal predecessors, (525), 123 states have call successors, (123), 42 states have call predecessors, (123), 42 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2022-11-03 03:44:42,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 03:44:42,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:42,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:42,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:42,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:42,889 INFO L85 PathProgramCache]: Analyzing trace with hash 818714732, now seen corresponding path program 1 times [2022-11-03 03:44:42,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:42,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017073821] [2022-11-03 03:44:42,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:42,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:43,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:43,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017073821] [2022-11-03 03:44:43,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017073821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:43,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:43,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:44:43,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513751938] [2022-11-03 03:44:43,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:43,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:43,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:43,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:43,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:43,580 INFO L87 Difference]: Start difference. First operand has 524 states, 357 states have (on average 1.4705882352941178) internal successors, (525), 366 states have internal predecessors, (525), 123 states have call successors, (123), 42 states have call predecessors, (123), 42 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:44:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:44,494 INFO L93 Difference]: Finished difference Result 1556 states and 2343 transitions. [2022-11-03 03:44:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:44,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 03:44:44,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:44,521 INFO L225 Difference]: With dead ends: 1556 [2022-11-03 03:44:44,521 INFO L226 Difference]: Without dead ends: 1031 [2022-11-03 03:44:44,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:44:44,535 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 734 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:44,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1421 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:44:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-03 03:44:44,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1027. [2022-11-03 03:44:44,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 704 states have (on average 1.4616477272727273) internal successors, (1029), 713 states have internal predecessors, (1029), 240 states have call successors, (240), 83 states have call predecessors, (240), 82 states have return successors, (234), 234 states have call predecessors, (234), 234 states have call successors, (234) [2022-11-03 03:44:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1503 transitions. [2022-11-03 03:44:44,709 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1503 transitions. Word has length 16 [2022-11-03 03:44:44,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:44,709 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1503 transitions. [2022-11-03 03:44:44,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:44:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1503 transitions. [2022-11-03 03:44:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 03:44:44,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:44,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:44,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:44:44,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:44,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:44,725 INFO L85 PathProgramCache]: Analyzing trace with hash 348001740, now seen corresponding path program 1 times [2022-11-03 03:44:44,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:44,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214512792] [2022-11-03 03:44:44,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:44,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:44,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:44,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214512792] [2022-11-03 03:44:44,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214512792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:44,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:44,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:44,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052296448] [2022-11-03 03:44:44,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:44,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:44,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:44,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:44,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:44,927 INFO L87 Difference]: Start difference. First operand 1027 states and 1503 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:44:45,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:45,922 INFO L93 Difference]: Finished difference Result 2529 states and 3692 transitions. [2022-11-03 03:44:45,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:45,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-03 03:44:45,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:45,938 INFO L225 Difference]: With dead ends: 2529 [2022-11-03 03:44:45,938 INFO L226 Difference]: Without dead ends: 1503 [2022-11-03 03:44:45,948 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 03:44:45,950 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 719 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:45,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1432 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:44:45,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2022-11-03 03:44:46,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1489. [2022-11-03 03:44:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1022 states have (on average 1.4589041095890412) internal successors, (1491), 1033 states have internal predecessors, (1491), 343 states have call successors, (343), 124 states have call predecessors, (343), 123 states have return successors, (337), 337 states have call predecessors, (337), 337 states have call successors, (337) [2022-11-03 03:44:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2171 transitions. [2022-11-03 03:44:46,156 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2171 transitions. Word has length 23 [2022-11-03 03:44:46,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:46,158 INFO L495 AbstractCegarLoop]: Abstraction has 1489 states and 2171 transitions. [2022-11-03 03:44:46,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:44:46,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2171 transitions. [2022-11-03 03:44:46,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:44:46,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:46,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:46,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:44:46,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:46,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:46,166 INFO L85 PathProgramCache]: Analyzing trace with hash -237055149, now seen corresponding path program 1 times [2022-11-03 03:44:46,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:46,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167542266] [2022-11-03 03:44:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:46,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:46,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:46,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:46,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167542266] [2022-11-03 03:44:46,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167542266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:46,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:46,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:44:46,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322299072] [2022-11-03 03:44:46,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:46,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:46,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:46,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:46,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:46,311 INFO L87 Difference]: Start difference. First operand 1489 states and 2171 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:44:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:46,779 INFO L93 Difference]: Finished difference Result 1491 states and 2172 transitions. [2022-11-03 03:44:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:46,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 03:44:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:46,789 INFO L225 Difference]: With dead ends: 1491 [2022-11-03 03:44:46,789 INFO L226 Difference]: Without dead ends: 1488 [2022-11-03 03:44:46,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:44:46,801 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 745 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:46,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 651 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:44:46,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2022-11-03 03:44:46,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1488. [2022-11-03 03:44:46,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1022 states have (on average 1.4579256360078279) internal successors, (1490), 1032 states have internal predecessors, (1490), 342 states have call successors, (342), 124 states have call predecessors, (342), 123 states have return successors, (337), 337 states have call predecessors, (337), 337 states have call successors, (337) [2022-11-03 03:44:46,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2169 transitions. [2022-11-03 03:44:46,940 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2169 transitions. Word has length 18 [2022-11-03 03:44:46,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:46,941 INFO L495 AbstractCegarLoop]: Abstraction has 1488 states and 2169 transitions. [2022-11-03 03:44:46,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:44:46,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2169 transitions. [2022-11-03 03:44:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 03:44:46,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:46,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:46,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:44:46,947 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:46,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:46,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1240881385, now seen corresponding path program 1 times [2022-11-03 03:44:46,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:46,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425870982] [2022-11-03 03:44:46,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:46,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:47,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:47,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425870982] [2022-11-03 03:44:47,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425870982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:47,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:47,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:44:47,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497778849] [2022-11-03 03:44:47,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:47,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:47,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:47,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:47,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:47,066 INFO L87 Difference]: Start difference. First operand 1488 states and 2169 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:44:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:47,462 INFO L93 Difference]: Finished difference Result 1490 states and 2170 transitions. [2022-11-03 03:44:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:47,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 03:44:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:47,471 INFO L225 Difference]: With dead ends: 1490 [2022-11-03 03:44:47,472 INFO L226 Difference]: Without dead ends: 1487 [2022-11-03 03:44:47,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:44:47,474 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 742 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:47,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 649 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:44:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2022-11-03 03:44:47,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1487. [2022-11-03 03:44:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1022 states have (on average 1.4569471624266144) internal successors, (1489), 1031 states have internal predecessors, (1489), 341 states have call successors, (341), 124 states have call predecessors, (341), 123 states have return successors, (337), 337 states have call predecessors, (337), 337 states have call successors, (337) [2022-11-03 03:44:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2167 transitions. [2022-11-03 03:44:47,651 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2167 transitions. Word has length 19 [2022-11-03 03:44:47,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:47,651 INFO L495 AbstractCegarLoop]: Abstraction has 1487 states and 2167 transitions. [2022-11-03 03:44:47,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:44:47,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2167 transitions. [2022-11-03 03:44:47,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:44:47,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:47,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:47,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:44:47,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:47,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:47,656 INFO L85 PathProgramCache]: Analyzing trace with hash -187721450, now seen corresponding path program 1 times [2022-11-03 03:44:47,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:47,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973883189] [2022-11-03 03:44:47,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:47,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:47,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:47,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973883189] [2022-11-03 03:44:47,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973883189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:47,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:47,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:44:47,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913624612] [2022-11-03 03:44:47,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:47,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:47,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:47,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:47,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:47,774 INFO L87 Difference]: Start difference. First operand 1487 states and 2167 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:44:48,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:48,157 INFO L93 Difference]: Finished difference Result 1489 states and 2168 transitions. [2022-11-03 03:44:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:48,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-03 03:44:48,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:48,167 INFO L225 Difference]: With dead ends: 1489 [2022-11-03 03:44:48,168 INFO L226 Difference]: Without dead ends: 1486 [2022-11-03 03:44:48,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:44:48,170 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 739 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:48,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 647 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:44:48,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2022-11-03 03:44:48,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1486. [2022-11-03 03:44:48,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1022 states have (on average 1.455968688845401) internal successors, (1488), 1030 states have internal predecessors, (1488), 340 states have call successors, (340), 124 states have call predecessors, (340), 123 states have return successors, (337), 337 states have call predecessors, (337), 337 states have call successors, (337) [2022-11-03 03:44:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2165 transitions. [2022-11-03 03:44:48,326 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2165 transitions. Word has length 20 [2022-11-03 03:44:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:48,326 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2165 transitions. [2022-11-03 03:44:48,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:44:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2165 transitions. [2022-11-03 03:44:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 03:44:48,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:48,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:48,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:44:48,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:48,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:48,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1848756127, now seen corresponding path program 1 times [2022-11-03 03:44:48,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:48,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811037647] [2022-11-03 03:44:48,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:48,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:48,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:48,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811037647] [2022-11-03 03:44:48,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811037647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:48,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:48,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:48,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250996577] [2022-11-03 03:44:48,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:48,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:48,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:48,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:48,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:48,412 INFO L87 Difference]: Start difference. First operand 1486 states and 2165 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:44:49,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:49,273 INFO L93 Difference]: Finished difference Result 3906 states and 5679 transitions. [2022-11-03 03:44:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:49,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-03 03:44:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:49,291 INFO L225 Difference]: With dead ends: 3906 [2022-11-03 03:44:49,291 INFO L226 Difference]: Without dead ends: 2421 [2022-11-03 03:44:49,300 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 03:44:49,302 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 711 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:49,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1487 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:44:49,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2022-11-03 03:44:49,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2410. [2022-11-03 03:44:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 1658 states have (on average 1.4547647768395657) internal successors, (2412), 1670 states have internal predecessors, (2412), 546 states have call successors, (546), 206 states have call predecessors, (546), 205 states have return successors, (543), 543 states have call predecessors, (543), 543 states have call successors, (543) [2022-11-03 03:44:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 3501 transitions. [2022-11-03 03:44:49,529 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 3501 transitions. Word has length 25 [2022-11-03 03:44:49,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:49,529 INFO L495 AbstractCegarLoop]: Abstraction has 2410 states and 3501 transitions. [2022-11-03 03:44:49,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:44:49,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 3501 transitions. [2022-11-03 03:44:49,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:44:49,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:49,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:49,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:44:49,532 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:49,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:49,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1524731508, now seen corresponding path program 1 times [2022-11-03 03:44:49,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:49,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018518334] [2022-11-03 03:44:49,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:49,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:49,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:49,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018518334] [2022-11-03 03:44:49,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018518334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:49,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:49,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:44:49,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942674964] [2022-11-03 03:44:49,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:49,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:49,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:49,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:49,614 INFO L87 Difference]: Start difference. First operand 2410 states and 3501 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:44:50,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:50,281 INFO L93 Difference]: Finished difference Result 5205 states and 7589 transitions. [2022-11-03 03:44:50,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:50,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 03:44:50,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:50,359 INFO L225 Difference]: With dead ends: 5205 [2022-11-03 03:44:50,359 INFO L226 Difference]: Without dead ends: 2791 [2022-11-03 03:44:50,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:44:50,372 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 701 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:50,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 980 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:44:50,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2022-11-03 03:44:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2774. [2022-11-03 03:44:50,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2774 states, 1902 states have (on average 1.4369085173501577) internal successors, (2733), 1919 states have internal predecessors, (2733), 621 states have call successors, (621), 258 states have call predecessors, (621), 250 states have return successors, (629), 610 states have call predecessors, (629), 617 states have call successors, (629) [2022-11-03 03:44:50,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3983 transitions. [2022-11-03 03:44:50,617 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 3983 transitions. Word has length 21 [2022-11-03 03:44:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:50,618 INFO L495 AbstractCegarLoop]: Abstraction has 2774 states and 3983 transitions. [2022-11-03 03:44:50,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:44:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 3983 transitions. [2022-11-03 03:44:50,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 03:44:50,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:50,629 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:50,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:44:50,630 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:50,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:50,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1354687224, now seen corresponding path program 1 times [2022-11-03 03:44:50,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:50,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899847999] [2022-11-03 03:44:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:50,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:44:50,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:50,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899847999] [2022-11-03 03:44:50,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899847999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:50,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:50,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:50,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63437230] [2022-11-03 03:44:50,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:50,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:50,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:50,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:50,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:50,866 INFO L87 Difference]: Start difference. First operand 2774 states and 3983 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:44:51,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:51,711 INFO L93 Difference]: Finished difference Result 3160 states and 4479 transitions. [2022-11-03 03:44:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:51,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-11-03 03:44:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:51,738 INFO L225 Difference]: With dead ends: 3160 [2022-11-03 03:44:51,739 INFO L226 Difference]: Without dead ends: 2774 [2022-11-03 03:44:51,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:51,744 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 284 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:51,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 1416 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:44:51,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2022-11-03 03:44:51,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2766. [2022-11-03 03:44:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 1897 states have (on average 1.4343700579862941) internal successors, (2721), 1915 states have internal predecessors, (2721), 618 states have call successors, (618), 257 states have call predecessors, (618), 250 states have return successors, (609), 607 states have call predecessors, (609), 609 states have call successors, (609) [2022-11-03 03:44:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3948 transitions. [2022-11-03 03:44:51,994 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3948 transitions. Word has length 46 [2022-11-03 03:44:51,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:51,996 INFO L495 AbstractCegarLoop]: Abstraction has 2766 states and 3948 transitions. [2022-11-03 03:44:51,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:44:51,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3948 transitions. [2022-11-03 03:44:52,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 03:44:52,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:52,007 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:52,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:44:52,007 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:52,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:52,008 INFO L85 PathProgramCache]: Analyzing trace with hash 296050502, now seen corresponding path program 1 times [2022-11-03 03:44:52,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:52,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665530922] [2022-11-03 03:44:52,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:52,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:44:52,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:52,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665530922] [2022-11-03 03:44:52,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665530922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:52,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:52,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:52,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251182970] [2022-11-03 03:44:52,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:52,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:52,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:52,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:52,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:52,287 INFO L87 Difference]: Start difference. First operand 2766 states and 3948 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:44:53,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:53,320 INFO L93 Difference]: Finished difference Result 7746 states and 11023 transitions. [2022-11-03 03:44:53,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:53,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2022-11-03 03:44:53,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:53,361 INFO L225 Difference]: With dead ends: 7746 [2022-11-03 03:44:53,361 INFO L226 Difference]: Without dead ends: 4981 [2022-11-03 03:44:53,374 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 03:44:53,378 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 703 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:53,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1503 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:44:53,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4981 states. [2022-11-03 03:44:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4981 to 4967. [2022-11-03 03:44:53,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4967 states, 3398 states have (on average 1.4281930547380812) internal successors, (4853), 3432 states have internal predecessors, (4853), 1109 states have call successors, (1109), 470 states have call predecessors, (1109), 459 states have return successors, (1096), 1090 states have call predecessors, (1096), 1096 states have call successors, (1096) [2022-11-03 03:44:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4967 states to 4967 states and 7058 transitions. [2022-11-03 03:44:53,821 INFO L78 Accepts]: Start accepts. Automaton has 4967 states and 7058 transitions. Word has length 90 [2022-11-03 03:44:53,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:53,822 INFO L495 AbstractCegarLoop]: Abstraction has 4967 states and 7058 transitions. [2022-11-03 03:44:53,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:44:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4967 states and 7058 transitions. [2022-11-03 03:44:53,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 03:44:53,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:53,838 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:53,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:44:53,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:53,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1323436365, now seen corresponding path program 1 times [2022-11-03 03:44:53,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:53,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826360421] [2022-11-03 03:44:53,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:53,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:54,118 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:44:54,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:54,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826360421] [2022-11-03 03:44:54,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826360421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:54,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:54,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:54,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235714075] [2022-11-03 03:44:54,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:54,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:54,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:54,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:54,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:54,121 INFO L87 Difference]: Start difference. First operand 4967 states and 7058 transitions. 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:44:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:55,356 INFO L93 Difference]: Finished difference Result 12794 states and 18184 transitions. [2022-11-03 03:44:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:55,357 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2022-11-03 03:44:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:55,410 INFO L225 Difference]: With dead ends: 12794 [2022-11-03 03:44:55,411 INFO L226 Difference]: Without dead ends: 7828 [2022-11-03 03:44:55,476 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 03:44:55,477 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 701 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:55,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1765 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:44:55,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7828 states. [2022-11-03 03:44:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7828 to 7814. [2022-11-03 03:44:56,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7814 states, 5345 states have (on average 1.4293732460243218) internal successors, (7640), 5401 states have internal predecessors, (7640), 1743 states have call successors, (1743), 744 states have call predecessors, (1743), 725 states have return successors, (1722), 1708 states have call predecessors, (1722), 1722 states have call successors, (1722) [2022-11-03 03:44:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 11105 transitions. [2022-11-03 03:44:56,198 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 11105 transitions. Word has length 91 [2022-11-03 03:44:56,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:56,198 INFO L495 AbstractCegarLoop]: Abstraction has 7814 states and 11105 transitions. [2022-11-03 03:44:56,199 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:44:56,199 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 11105 transitions. [2022-11-03 03:44:56,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 03:44:56,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:56,221 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:56,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:44:56,222 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:56,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:56,223 INFO L85 PathProgramCache]: Analyzing trace with hash -632894855, now seen corresponding path program 1 times [2022-11-03 03:44:56,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:56,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137313370] [2022-11-03 03:44:56,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:56,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 03:44:58,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:58,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137313370] [2022-11-03 03:44:58,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137313370] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:44:58,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003366233] [2022-11-03 03:44:58,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:58,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:44:58,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:44:58,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:44:58,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:44:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:59,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-03 03:44:59,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:59,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 03:45:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:45:00,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:45:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 03:45:34,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003366233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:45:34,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [621365249] [2022-11-03 03:45:34,734 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-03 03:45:34,734 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:45:34,739 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:45:34,746 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:45:34,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:45:42,813 INFO L197 IcfgInterpreter]: Interpreting procedure pcmcia_nonstatic_validate_mem with input of size 230 for LOIs [2022-11-03 03:45:43,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:45:44,196 INFO L356 Elim1Store]: treesize reduction 251, result has 23.2 percent of original size [2022-11-03 03:45:44,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 282 treesize of output 251 [2022-11-03 03:45:44,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:45:44,608 INFO L356 Elim1Store]: treesize reduction 265, result has 23.6 percent of original size [2022-11-03 03:45:44,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 465 treesize of output 299 [2022-11-03 03:45:44,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:45:44,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:45:45,081 INFO L356 Elim1Store]: treesize reduction 402, result has 18.8 percent of original size [2022-11-03 03:45:45,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 156 treesize of output 183 [2022-11-03 03:45:45,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:45:54,642 INFO L197 IcfgInterpreter]: Interpreting procedure do_mem_probe with input of size 641 for LOIs [2022-11-03 03:45:58,784 INFO L197 IcfgInterpreter]: Interpreting procedure do_validate_mem with input of size 409 for LOIs [2022-11-03 03:46:00,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:00,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:00,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:00,571 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 591 treesize of output 533 [2022-11-03 03:46:00,728 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:46:00,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 37 [2022-11-03 03:46:00,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 03:46:00,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2022-11-03 03:46:00,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2022-11-03 03:46:01,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 03:46:01,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:46:01,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:01,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:01,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:01,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-03 03:46:01,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:01,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:46:01,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-03 03:46:01,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:01,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:46:01,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-03 03:46:03,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:03,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:03,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:03,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 591 treesize of output 533 [2022-11-03 03:46:03,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:03,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:03,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:03,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 03:46:03,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:03,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:03,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:03,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:03,234 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 03:46:03,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 29 [2022-11-03 03:46:03,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2022-11-03 03:46:03,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2022-11-03 03:46:07,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:07,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:07,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:07,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 591 treesize of output 533 [2022-11-03 03:46:07,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:07,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2022-11-03 03:46:07,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:07,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2022-11-03 03:46:07,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:07,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:07,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:07,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 03:46:07,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:07,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:07,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:07,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:07,400 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 03:46:07,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 29 [2022-11-03 03:46:08,074 INFO L197 IcfgInterpreter]: Interpreting procedure claim_region with input of size 325 for LOIs [2022-11-03 03:46:11,223 INFO L197 IcfgInterpreter]: Interpreting procedure pcmcia_make_resource with input of size 338 for LOIs [2022-11-03 03:46:13,409 INFO L197 IcfgInterpreter]: Interpreting procedure kzalloc with input of size 313 for LOIs [2022-11-03 03:46:14,377 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 310 for LOIs [2022-11-03 03:46:15,830 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 310 for LOIs [2022-11-03 03:46:16,219 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:46:36,013 WARN L234 SmtUtils]: Spent 18.35s on a formula simplification. DAG size of input: 927 DAG size of output: 683 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:47:08,411 WARN L234 SmtUtils]: Spent 11.53s on a formula simplification. DAG size of input: 368 DAG size of output: 366 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:47:19,685 WARN L234 SmtUtils]: Spent 8.46s on a formula simplification. DAG size of input: 406 DAG size of output: 392 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:47:30,281 WARN L234 SmtUtils]: Spent 9.93s on a formula simplification. DAG size of input: 410 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:49:21,021 WARN L234 SmtUtils]: Spent 1.80m on a formula simplification. DAG size of input: 409 DAG size of output: 399 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:51:21,192 WARN L234 SmtUtils]: Spent 1.97m on a formula simplification. DAG size of input: 494 DAG size of output: 478 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:52:05,936 WARN L234 SmtUtils]: Spent 13.34s on a formula simplification. DAG size of input: 358 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:52:49,670 WARN L234 SmtUtils]: Spent 23.09s on a formula simplification. DAG size of input: 408 DAG size of output: 405 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:20,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [621365249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:20,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:53:20,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [6, 16, 6] total 71 [2022-11-03 03:53:20,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560045230] [2022-11-03 03:53:20,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:20,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-03 03:53:20,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:20,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-03 03:53:20,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=4765, Unknown=0, NotChecked=0, Total=4970 [2022-11-03 03:53:20,687 INFO L87 Difference]: Start difference. First operand 7814 states and 11105 transitions. Second operand has 53 states, 40 states have (on average 1.35) internal successors, (54), 38 states have internal predecessors, (54), 10 states have call successors, (14), 9 states have call predecessors, (14), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-03 03:53:48,322 WARN L234 SmtUtils]: Spent 10.22s on a formula simplification. DAG size of input: 705 DAG size of output: 684 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:35,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:35,829 INFO L93 Difference]: Finished difference Result 17771 states and 25810 transitions. [2022-11-03 03:54:35,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-03 03:54:35,831 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 40 states have (on average 1.35) internal successors, (54), 38 states have internal predecessors, (54), 10 states have call successors, (14), 9 states have call predecessors, (14), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 102 [2022-11-03 03:54:35,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:35,885 INFO L225 Difference]: With dead ends: 17771 [2022-11-03 03:54:35,886 INFO L226 Difference]: Without dead ends: 9958 [2022-11-03 03:54:35,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 242 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 450.6s TimeCoverageRelationStatistics Valid=311, Invalid=6661, Unknown=0, NotChecked=0, Total=6972 [2022-11-03 03:54:35,910 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 296 mSDsluCounter, 12222 mSDsCounter, 0 mSdLazyCounter, 8973 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 11400 SdHoareTripleChecker+Invalid, 13539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 8973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4476 IncrementalHoareTripleChecker+Unchecked, 47.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:35,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 11400 Invalid, 13539 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [90 Valid, 8973 Invalid, 0 Unknown, 4476 Unchecked, 47.8s Time] [2022-11-03 03:54:35,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9958 states. [2022-11-03 03:54:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9958 to 9574. [2022-11-03 03:54:37,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9574 states, 6829 states have (on average 1.460682383950798) internal successors, (9975), 6893 states have internal predecessors, (9975), 1971 states have call successors, (1971), 808 states have call predecessors, (1971), 773 states have return successors, (1966), 1912 states have call predecessors, (1966), 1950 states have call successors, (1966) [2022-11-03 03:54:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9574 states to 9574 states and 13912 transitions. [2022-11-03 03:54:37,415 INFO L78 Accepts]: Start accepts. Automaton has 9574 states and 13912 transitions. Word has length 102 [2022-11-03 03:54:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:37,415 INFO L495 AbstractCegarLoop]: Abstraction has 9574 states and 13912 transitions. [2022-11-03 03:54:37,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 40 states have (on average 1.35) internal successors, (54), 38 states have internal predecessors, (54), 10 states have call successors, (14), 9 states have call predecessors, (14), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-03 03:54:37,416 INFO L276 IsEmpty]: Start isEmpty. Operand 9574 states and 13912 transitions. [2022-11-03 03:54:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 03:54:37,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:37,453 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:37,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:37,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:37,666 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:37,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:37,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1582347601, now seen corresponding path program 1 times [2022-11-03 03:54:37,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:37,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776430446] [2022-11-03 03:54:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:37,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 03:54:39,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:39,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776430446] [2022-11-03 03:54:39,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776430446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:54:39,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871498206] [2022-11-03 03:54:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:39,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:39,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:39,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:39,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23e49fdd-7edf-4781-a8f7-5699795c66d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:54:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:41,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-03 03:54:41,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:41,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 03:54:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-03 03:54:42,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:55:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 03:55:16,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871498206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:55:16,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [778364655] [2022-11-03 03:55:16,951 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-03 03:55:16,951 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:55:16,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:55:16,952 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:55:16,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:55:23,088 INFO L197 IcfgInterpreter]: Interpreting procedure pcmcia_nonstatic_validate_mem with input of size 230 for LOIs [2022-11-03 03:55:23,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:23,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:24,230 INFO L356 Elim1Store]: treesize reduction 265, result has 23.6 percent of original size [2022-11-03 03:55:24,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 282 treesize of output 255 [2022-11-03 03:55:24,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:24,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:24,578 INFO L356 Elim1Store]: treesize reduction 251, result has 23.2 percent of original size [2022-11-03 03:55:24,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 470 treesize of output 300 [2022-11-03 03:55:24,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:55:24,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:55:24,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:24,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:24,961 INFO L356 Elim1Store]: treesize reduction 402, result has 18.8 percent of original size [2022-11-03 03:55:24,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 156 treesize of output 183 [2022-11-03 03:55:31,722 INFO L197 IcfgInterpreter]: Interpreting procedure do_mem_probe with input of size 655 for LOIs [2022-11-03 03:55:34,988 INFO L197 IcfgInterpreter]: Interpreting procedure do_validate_mem with input of size 409 for LOIs [2022-11-03 03:55:36,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 591 treesize of output 533 [2022-11-03 03:55:36,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2022-11-03 03:55:36,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 03:55:36,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,485 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 03:55:36,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 29 [2022-11-03 03:55:36,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2022-11-03 03:55:36,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:55:36,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 03:55:36,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-03 03:55:36,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:55:36,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-03 03:55:36,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:36,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:55:36,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-03 03:55:38,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:38,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:38,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:38,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 591 treesize of output 533 [2022-11-03 03:55:38,382 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:55:38,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 37 [2022-11-03 03:55:38,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2022-11-03 03:55:38,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 03:55:38,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2022-11-03 03:55:41,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:41,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:41,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:41,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 591 treesize of output 533 [2022-11-03 03:55:42,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:42,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2022-11-03 03:55:42,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:42,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2022-11-03 03:55:42,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:42,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:42,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:42,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 03:55:42,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:42,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:42,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:42,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:42,213 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 03:55:42,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 29 [2022-11-03 03:55:42,615 INFO L197 IcfgInterpreter]: Interpreting procedure claim_region with input of size 325 for LOIs [2022-11-03 03:55:46,060 INFO L197 IcfgInterpreter]: Interpreting procedure pcmcia_make_resource with input of size 338 for LOIs [2022-11-03 03:55:49,026 INFO L197 IcfgInterpreter]: Interpreting procedure kzalloc with input of size 313 for LOIs [2022-11-03 03:55:50,601 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 310 for LOIs [2022-11-03 03:55:52,065 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 310 for LOIs [2022-11-03 03:55:52,429 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:56:13,196 WARN L234 SmtUtils]: Spent 18.73s on a formula simplification. DAG size of input: 927 DAG size of output: 683 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:56:47,909 WARN L234 SmtUtils]: Spent 12.11s on a formula simplification. DAG size of input: 368 DAG size of output: 366 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:57:01,196 WARN L234 SmtUtils]: Spent 9.78s on a formula simplification. DAG size of input: 406 DAG size of output: 392 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:57:12,237 WARN L234 SmtUtils]: Spent 10.17s on a formula simplification. DAG size of input: 410 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)