./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 6b4ec56b 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_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/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_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9 --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-6b4ec56 [2022-11-20 20:13:54,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:13:54,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:13:54,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:13:54,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:13:54,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:13:54,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:13:54,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:13:54,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:13:55,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:13:55,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:13:55,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:13:55,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:13:55,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:13:55,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:13:55,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:13:55,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:13:55,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:13:55,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:13:55,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:13:55,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:13:55,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:13:55,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:13:55,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:13:55,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:13:55,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:13:55,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:13:55,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:13:55,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:13:55,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:13:55,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:13:55,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:13:55,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:13:55,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:13:55,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:13:55,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:13:55,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:13:55,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:13:55,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:13:55,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:13:55,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:13:55,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 20:13:55,097 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:13:55,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:13:55,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:13:55,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:13:55,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:13:55,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:13:55,100 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:13:55,100 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:13:55,100 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:13:55,100 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:13:55,101 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:13:55,102 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:13:55,102 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:13:55,102 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:13:55,102 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:13:55,102 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:13:55,103 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:13:55,103 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:13:55,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:13:55,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:13:55,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:13:55,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:13:55,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:13:55,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:13:55,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:13:55,105 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:13:55,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:13:55,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:13:55,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:13:55,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:13:55,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:13:55,107 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:13:55,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:13:55,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:13:55,107 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:13:55,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:13:55,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:13:55,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:13:55,108 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_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf300fda993e6da191f561c0f8e677f22a7de271b61b51439ca8ec3e0ecdedef [2022-11-20 20:13:55,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:13:55,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:13:55,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:13:55,419 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:13:55,419 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:13:55,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2022-11-20 20:13:58,533 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:13:58,982 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:13:58,983 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2022-11-20 20:13:59,005 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/data/4b3538d79/89005765b96c4b5e9c0ed30d4606b701/FLAG07cabec72 [2022-11-20 20:13:59,020 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/data/4b3538d79/89005765b96c4b5e9c0ed30d4606b701 [2022-11-20 20:13:59,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:13:59,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:13:59,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:13:59,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:13:59,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:13:59,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:13:59" (1/1) ... [2022-11-20 20:13:59,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bbcea92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:59, skipping insertion in model container [2022-11-20 20:13:59,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:13:59" (1/1) ... [2022-11-20 20:13:59,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:13:59,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:14:00,138 WARN L237 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_a569737d-4417-4528-9742-94e83156bee0/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i[120339,120352] [2022-11-20 20:14:00,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:14:00,278 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:14:00,548 WARN L237 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_a569737d-4417-4528-9742-94e83156bee0/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i[120339,120352] [2022-11-20 20:14:00,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:14:00,623 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:14:00,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:00 WrapperNode [2022-11-20 20:14:00,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:14:00,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:14:00,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:14:00,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:14:00,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:00" (1/1) ... [2022-11-20 20:14:00,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:00" (1/1) ... [2022-11-20 20:14:00,749 INFO L138 Inliner]: procedures = 152, calls = 634, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 1780 [2022-11-20 20:14:00,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:14:00,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:14:00,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:14:00,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:14:00,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:00" (1/1) ... [2022-11-20 20:14:00,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:00" (1/1) ... [2022-11-20 20:14:00,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:00" (1/1) ... [2022-11-20 20:14:00,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:00" (1/1) ... [2022-11-20 20:14:00,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:00" (1/1) ... [2022-11-20 20:14:00,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:00" (1/1) ... [2022-11-20 20:14:00,848 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:00" (1/1) ... [2022-11-20 20:14:00,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:00" (1/1) ... [2022-11-20 20:14:00,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:14:00,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:14:00,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:14:00,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:14:00,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:00" (1/1) ... [2022-11-20 20:14:00,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:14:00,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:14:00,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:14:00,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:14:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-20 20:14:00,943 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-20 20:14:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_alloc_resource [2022-11-20 20:14:00,943 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_alloc_resource [2022-11-20 20:14:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure add_interval [2022-11-20 20:14:00,943 INFO L138 BoogieDeclarations]: Found implementation of procedure add_interval [2022-11-20 20:14:00,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:14:00,944 INFO L130 BoogieDeclarations]: Found specification of procedure sub_interval [2022-11-20 20:14:00,944 INFO L138 BoogieDeclarations]: Found implementation of procedure sub_interval [2022-11-20 20:14:00,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 20:14:00,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 20:14:00,944 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_find_mem_region [2022-11-20 20:14:00,944 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_find_mem_region [2022-11-20 20:14:00,944 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 20:14:00,944 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 20:14:00,945 INFO L130 BoogieDeclarations]: Found specification of procedure free_region [2022-11-20 20:14:00,945 INFO L138 BoogieDeclarations]: Found implementation of procedure free_region [2022-11-20 20:14:00,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:14:00,945 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 20:14:00,945 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 20:14:00,945 INFO L130 BoogieDeclarations]: Found specification of procedure __nonstatic_adjust_io_region [2022-11-20 20:14:00,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __nonstatic_adjust_io_region [2022-11-20 20:14:00,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-20 20:14:00,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-20 20:14:00,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 20:14:00,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 20:14:00,946 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_release_resource_db [2022-11-20 20:14:00,946 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_release_resource_db [2022-11-20 20:14:00,946 INFO L130 BoogieDeclarations]: Found specification of procedure do_mem_probe [2022-11-20 20:14:00,946 INFO L138 BoogieDeclarations]: Found implementation of procedure do_mem_probe [2022-11-20 20:14:00,946 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_make_resource [2022-11-20 20:14:00,946 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_make_resource [2022-11-20 20:14:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 20:14:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 20:14:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_init [2022-11-20 20:14:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_init [2022-11-20 20:14:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_find_io [2022-11-20 20:14:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_find_io [2022-11-20 20:14:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:14:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 20:14:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 20:14:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure pccard_sysfs_add_rsrc [2022-11-20 20:14:00,948 INFO L138 BoogieDeclarations]: Found implementation of procedure pccard_sysfs_add_rsrc [2022-11-20 20:14:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:14:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure static_init [2022-11-20 20:14:00,948 INFO L138 BoogieDeclarations]: Found implementation of procedure static_init [2022-11-20 20:14:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:14:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:14:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure do_validate_mem [2022-11-20 20:14:00,949 INFO L138 BoogieDeclarations]: Found implementation of procedure do_validate_mem [2022-11-20 20:14:00,949 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_resource [2022-11-20 20:14:00,949 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_resource [2022-11-20 20:14:00,949 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_nonstatic_validate_mem [2022-11-20 20:14:00,949 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_nonstatic_validate_mem [2022-11-20 20:14:00,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:14:00,949 INFO L130 BoogieDeclarations]: Found specification of procedure static_find_io [2022-11-20 20:14:00,949 INFO L138 BoogieDeclarations]: Found implementation of procedure static_find_io [2022-11-20 20:14:00,949 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-20 20:14:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-20 20:14:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure show_mem_db [2022-11-20 20:14:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure show_mem_db [2022-11-20 20:14:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_io [2022-11-20 20:14:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_io [2022-11-20 20:14:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:14:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-20 20:14:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-20 20:14:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 20:14:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 20:14:00,951 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 20:14:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 20:14:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 20:14:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 20:14:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 20:14:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-20 20:14:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-20 20:14:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:14:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2022-11-20 20:14:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2022-11-20 20:14:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pccard_static_ops_release_6 [2022-11-20 20:14:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pccard_static_ops_release_6 [2022-11-20 20:14:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_memory [2022-11-20 20:14:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_memory [2022-11-20 20:14:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_resource [2022-11-20 20:14:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_resource [2022-11-20 20:14:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pccard_static_ops_release_7 [2022-11-20 20:14:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pccard_static_ops_release_7 [2022-11-20 20:14:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:14:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:14:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ops_mutex_of_pcmcia_socket [2022-11-20 20:14:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ops_mutex_of_pcmcia_socket [2022-11-20 20:14:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure claim_region [2022-11-20 20:14:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure claim_region [2022-11-20 20:14:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ops_mutex_of_pcmcia_socket [2022-11-20 20:14:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ops_mutex_of_pcmcia_socket [2022-11-20 20:14:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure show_io_db [2022-11-20 20:14:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure show_io_db [2022-11-20 20:14:01,501 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:14:01,504 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:14:03,370 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:14:03,932 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:14:03,932 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:14:03,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:14:03 BoogieIcfgContainer [2022-11-20 20:14:03,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:14:03,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:14:03,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:14:03,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:14:03,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:13:59" (1/3) ... [2022-11-20 20:14:03,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a17a88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:14:03, skipping insertion in model container [2022-11-20 20:14:03,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:00" (2/3) ... [2022-11-20 20:14:03,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a17a88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:14:03, skipping insertion in model container [2022-11-20 20:14:03,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:14:03" (3/3) ... [2022-11-20 20:14:03,945 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2022-11-20 20:14:03,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:14:03,967 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:14:04,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:14:04,036 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;@7ee53fb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:14:04,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:14:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 533 states, 366 states have (on average 1.4754098360655739) internal successors, (540), 375 states have internal predecessors, (540), 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) [2022-11-20 20:14:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 20:14:04,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:04,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:14:04,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:04,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:04,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1644333390, now seen corresponding path program 1 times [2022-11-20 20:14:04,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:14:04,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267457636] [2022-11-20 20:14:04,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:04,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:14:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:14:04,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:14:04,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267457636] [2022-11-20 20:14:04,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267457636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:04,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:14:04,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:14:04,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922004159] [2022-11-20 20:14:04,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:04,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:14:04,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:14:04,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:14:04,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:14:04,635 INFO L87 Difference]: Start difference. First operand has 533 states, 366 states have (on average 1.4754098360655739) internal successors, (540), 375 states have internal predecessors, (540), 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) [2022-11-20 20:14:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:05,324 INFO L93 Difference]: Finished difference Result 1583 states and 2388 transitions. [2022-11-20 20:14:05,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:14:05,327 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 [2022-11-20 20:14:05,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:05,356 INFO L225 Difference]: With dead ends: 1583 [2022-11-20 20:14:05,358 INFO L226 Difference]: Without dead ends: 1049 [2022-11-20 20:14:05,369 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 [2022-11-20 20:14:05,375 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 749 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:14:05,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1457 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:14:05,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2022-11-20 20:14:05,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1045. [2022-11-20 20:14:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 722 states have (on average 1.4667590027700832) internal successors, (1059), 731 states have internal predecessors, (1059), 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) [2022-11-20 20:14:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1533 transitions. [2022-11-20 20:14:05,545 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1533 transitions. Word has length 16 [2022-11-20 20:14:05,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:05,546 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1533 transitions. [2022-11-20 20:14:05,546 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) [2022-11-20 20:14:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1533 transitions. [2022-11-20 20:14:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 20:14:05,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:05,555 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] [2022-11-20 20:14:05,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:14:05,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:05,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash -600257331, now seen corresponding path program 1 times [2022-11-20 20:14:05,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:14:05,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185096660] [2022-11-20 20:14:05,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:05,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:14:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:14:05,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:14:05,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185096660] [2022-11-20 20:14:05,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185096660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:05,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:14:05,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:14:05,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692645167] [2022-11-20 20:14:05,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:05,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:14:05,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:14:05,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:14:05,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:14:05,723 INFO L87 Difference]: Start difference. First operand 1045 states and 1533 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) [2022-11-20 20:14:06,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:06,423 INFO L93 Difference]: Finished difference Result 2574 states and 3767 transitions. [2022-11-20 20:14:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:14:06,424 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 [2022-11-20 20:14:06,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:06,433 INFO L225 Difference]: With dead ends: 2574 [2022-11-20 20:14:06,433 INFO L226 Difference]: Without dead ends: 1530 [2022-11-20 20:14:06,437 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 [2022-11-20 20:14:06,438 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 734 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:14:06,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1474 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:14:06,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2022-11-20 20:14:06,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1516. [2022-11-20 20:14:06,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1049 states have (on average 1.4642516682554814) internal successors, (1536), 1060 states have internal predecessors, (1536), 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) [2022-11-20 20:14:06,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2216 transitions. [2022-11-20 20:14:06,525 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2216 transitions. Word has length 23 [2022-11-20 20:14:06,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:06,525 INFO L495 AbstractCegarLoop]: Abstraction has 1516 states and 2216 transitions. [2022-11-20 20:14:06,526 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) [2022-11-20 20:14:06,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2216 transitions. [2022-11-20 20:14:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 20:14:06,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:06,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:14:06,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:14:06,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:06,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:06,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2050058857, now seen corresponding path program 1 times [2022-11-20 20:14:06,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:14:06,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359062536] [2022-11-20 20:14:06,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:06,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:14:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:14:06,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:14:06,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359062536] [2022-11-20 20:14:06,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359062536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:06,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:14:06,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:14:06,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616439265] [2022-11-20 20:14:06,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:06,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:14:06,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:14:06,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:14:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:14:06,603 INFO L87 Difference]: Start difference. First operand 1516 states and 2216 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) [2022-11-20 20:14:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:06,966 INFO L93 Difference]: Finished difference Result 1518 states and 2217 transitions. [2022-11-20 20:14:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:14:06,966 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 [2022-11-20 20:14:06,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:06,975 INFO L225 Difference]: With dead ends: 1518 [2022-11-20 20:14:06,975 INFO L226 Difference]: Without dead ends: 1515 [2022-11-20 20:14:06,979 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 [2022-11-20 20:14:06,983 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 760 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:14:06,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 669 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:14:06,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-11-20 20:14:07,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1515. [2022-11-20 20:14:07,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1049 states have (on average 1.463298379408961) internal successors, (1535), 1059 states have internal predecessors, (1535), 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) [2022-11-20 20:14:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2214 transitions. [2022-11-20 20:14:07,085 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2214 transitions. Word has length 18 [2022-11-20 20:14:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:07,086 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 2214 transitions. [2022-11-20 20:14:07,088 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) [2022-11-20 20:14:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2214 transitions. [2022-11-20 20:14:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 20:14:07,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:07,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:14:07,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:14:07,091 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:07,092 INFO L85 PathProgramCache]: Analyzing trace with hash -873033273, now seen corresponding path program 1 times [2022-11-20 20:14:07,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:14:07,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227326925] [2022-11-20 20:14:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:07,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:14:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:14:07,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:14:07,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227326925] [2022-11-20 20:14:07,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227326925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:07,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:14:07,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:14:07,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753107765] [2022-11-20 20:14:07,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:07,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:14:07,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:14:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:14:07,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:14:07,211 INFO L87 Difference]: Start difference. First operand 1515 states and 2214 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) [2022-11-20 20:14:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:07,568 INFO L93 Difference]: Finished difference Result 1517 states and 2215 transitions. [2022-11-20 20:14:07,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:14:07,569 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 [2022-11-20 20:14:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:07,576 INFO L225 Difference]: With dead ends: 1517 [2022-11-20 20:14:07,577 INFO L226 Difference]: Without dead ends: 1514 [2022-11-20 20:14:07,580 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 [2022-11-20 20:14:07,588 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 757 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:14:07,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 667 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:14:07,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2022-11-20 20:14:07,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1514. [2022-11-20 20:14:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1049 states have (on average 1.4623450905624404) internal successors, (1534), 1058 states have internal predecessors, (1534), 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) [2022-11-20 20:14:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 2212 transitions. [2022-11-20 20:14:07,737 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 2212 transitions. Word has length 19 [2022-11-20 20:14:07,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:07,737 INFO L495 AbstractCegarLoop]: Abstraction has 1514 states and 2212 transitions. [2022-11-20 20:14:07,737 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) [2022-11-20 20:14:07,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 2212 transitions. [2022-11-20 20:14:07,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 20:14:07,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:07,739 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] [2022-11-20 20:14:07,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:14:07,740 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:07,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:07,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1294571220, now seen corresponding path program 1 times [2022-11-20 20:14:07,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:14:07,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593965276] [2022-11-20 20:14:07,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:07,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:14:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:14:07,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:14:07,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593965276] [2022-11-20 20:14:07,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593965276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:07,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:14:07,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:14:07,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150598929] [2022-11-20 20:14:07,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:07,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:14:07,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:14:07,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:14:07,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:14:07,833 INFO L87 Difference]: Start difference. First operand 1514 states and 2212 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) [2022-11-20 20:14:08,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:08,290 INFO L93 Difference]: Finished difference Result 1516 states and 2213 transitions. [2022-11-20 20:14:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:14:08,291 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 [2022-11-20 20:14:08,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:08,300 INFO L225 Difference]: With dead ends: 1516 [2022-11-20 20:14:08,300 INFO L226 Difference]: Without dead ends: 1513 [2022-11-20 20:14:08,301 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 [2022-11-20 20:14:08,304 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 754 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:14:08,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 665 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:14:08,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2022-11-20 20:14:08,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1513. [2022-11-20 20:14:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1049 states have (on average 1.46139180171592) internal successors, (1533), 1057 states have internal predecessors, (1533), 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) [2022-11-20 20:14:08,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2210 transitions. [2022-11-20 20:14:08,407 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2210 transitions. Word has length 20 [2022-11-20 20:14:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:08,407 INFO L495 AbstractCegarLoop]: Abstraction has 1513 states and 2210 transitions. [2022-11-20 20:14:08,408 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) [2022-11-20 20:14:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2210 transitions. [2022-11-20 20:14:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 20:14:08,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:08,410 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] [2022-11-20 20:14:08,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:14:08,410 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:08,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:08,411 INFO L85 PathProgramCache]: Analyzing trace with hash 320599106, now seen corresponding path program 1 times [2022-11-20 20:14:08,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:14:08,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946522154] [2022-11-20 20:14:08,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:08,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:14:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:14:08,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:14:08,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946522154] [2022-11-20 20:14:08,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946522154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:08,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:14:08,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:14:08,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406869417] [2022-11-20 20:14:08,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:08,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:14:08,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:14:08,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:14:08,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:14:08,514 INFO L87 Difference]: Start difference. First operand 1513 states and 2210 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) [2022-11-20 20:14:09,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:09,201 INFO L93 Difference]: Finished difference Result 3978 states and 5799 transitions. [2022-11-20 20:14:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:14:09,202 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 [2022-11-20 20:14:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:09,220 INFO L225 Difference]: With dead ends: 3978 [2022-11-20 20:14:09,221 INFO L226 Difference]: Without dead ends: 2466 [2022-11-20 20:14:09,227 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 [2022-11-20 20:14:09,228 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 726 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:14:09,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1541 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:14:09,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-11-20 20:14:09,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2455. [2022-11-20 20:14:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 1703 states have (on average 1.4603640634174986) internal successors, (2487), 1715 states have internal predecessors, (2487), 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) [2022-11-20 20:14:09,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3576 transitions. [2022-11-20 20:14:09,455 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3576 transitions. Word has length 25 [2022-11-20 20:14:09,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:09,456 INFO L495 AbstractCegarLoop]: Abstraction has 2455 states and 3576 transitions. [2022-11-20 20:14:09,456 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) [2022-11-20 20:14:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3576 transitions. [2022-11-20 20:14:09,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 20:14:09,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:09,457 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] [2022-11-20 20:14:09,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:14:09,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:09,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:09,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1477340822, now seen corresponding path program 1 times [2022-11-20 20:14:09,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:14:09,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121580091] [2022-11-20 20:14:09,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:09,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:14:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:14:09,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:14:09,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121580091] [2022-11-20 20:14:09,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121580091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:09,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:14:09,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:14:09,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243293756] [2022-11-20 20:14:09,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:09,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:14:09,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:14:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:14:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:14:09,521 INFO L87 Difference]: Start difference. First operand 2455 states and 3576 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) [2022-11-20 20:14:10,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:10,144 INFO L93 Difference]: Finished difference Result 5295 states and 7739 transitions. [2022-11-20 20:14:10,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:14:10,145 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 [2022-11-20 20:14:10,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:10,164 INFO L225 Difference]: With dead ends: 5295 [2022-11-20 20:14:10,164 INFO L226 Difference]: Without dead ends: 2836 [2022-11-20 20:14:10,172 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 [2022-11-20 20:14:10,173 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 701 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:14:10,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1016 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:14:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2022-11-20 20:14:10,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 2819. [2022-11-20 20:14:10,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 1947 states have (on average 1.4422187981510015) internal successors, (2808), 1964 states have internal predecessors, (2808), 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) [2022-11-20 20:14:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4058 transitions. [2022-11-20 20:14:10,386 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4058 transitions. Word has length 21 [2022-11-20 20:14:10,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:10,387 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 4058 transitions. [2022-11-20 20:14:10,387 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) [2022-11-20 20:14:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4058 transitions. [2022-11-20 20:14:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 20:14:10,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:10,396 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] [2022-11-20 20:14:10,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:14:10,396 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:10,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:10,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1139109111, now seen corresponding path program 1 times [2022-11-20 20:14:10,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:14:10,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842201793] [2022-11-20 20:14:10,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:10,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:14:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:14:10,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:14:10,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842201793] [2022-11-20 20:14:10,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842201793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:10,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:14:10,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:14:10,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379933573] [2022-11-20 20:14:10,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:10,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:14:10,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:14:10,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:14:10,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:14:10,592 INFO L87 Difference]: Start difference. First operand 2819 states and 4058 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) [2022-11-20 20:14:11,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:11,245 INFO L93 Difference]: Finished difference Result 3223 states and 4584 transitions. [2022-11-20 20:14:11,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:14:11,246 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 [2022-11-20 20:14:11,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:11,265 INFO L225 Difference]: With dead ends: 3223 [2022-11-20 20:14:11,265 INFO L226 Difference]: Without dead ends: 2819 [2022-11-20 20:14:11,269 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 [2022-11-20 20:14:11,270 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 299 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:14:11,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1434 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:14:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2022-11-20 20:14:11,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2811. [2022-11-20 20:14:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 1942 states have (on average 1.439752832131823) internal successors, (2796), 1960 states have internal predecessors, (2796), 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) [2022-11-20 20:14:11,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4023 transitions. [2022-11-20 20:14:11,512 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4023 transitions. Word has length 46 [2022-11-20 20:14:11,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:11,513 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4023 transitions. [2022-11-20 20:14:11,514 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) [2022-11-20 20:14:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4023 transitions. [2022-11-20 20:14:11,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-20 20:14:11,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:11,525 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] [2022-11-20 20:14:11,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:14:11,526 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:11,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash 22475290, now seen corresponding path program 1 times [2022-11-20 20:14:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:14:11,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364040026] [2022-11-20 20:14:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:11,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:14:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 20:14:11,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:14:11,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364040026] [2022-11-20 20:14:11,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364040026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:11,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:14:11,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:14:11,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398917040] [2022-11-20 20:14:11,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:11,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:14:11,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:14:11,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:14:11,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:14:11,771 INFO L87 Difference]: Start difference. First operand 2811 states and 4023 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2022-11-20 20:14:12,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:12,599 INFO L93 Difference]: Finished difference Result 7872 states and 11233 transitions. [2022-11-20 20:14:12,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:14:12,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 89 [2022-11-20 20:14:12,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:12,632 INFO L225 Difference]: With dead ends: 7872 [2022-11-20 20:14:12,632 INFO L226 Difference]: Without dead ends: 5062 [2022-11-20 20:14:12,642 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 [2022-11-20 20:14:12,643 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 718 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:14:12,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1556 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:14:12,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5062 states. [2022-11-20 20:14:13,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5062 to 5048. [2022-11-20 20:14:13,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5048 states, 3479 states have (on average 1.4337453291175626) internal successors, (4988), 3513 states have internal predecessors, (4988), 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) [2022-11-20 20:14:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 7193 transitions. [2022-11-20 20:14:13,070 INFO L78 Accepts]: Start accepts. Automaton has 5048 states and 7193 transitions. Word has length 89 [2022-11-20 20:14:13,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:13,070 INFO L495 AbstractCegarLoop]: Abstraction has 5048 states and 7193 transitions. [2022-11-20 20:14:13,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2022-11-20 20:14:13,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5048 states and 7193 transitions. [2022-11-20 20:14:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 20:14:13,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:13,084 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, 1] [2022-11-20 20:14:13,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 20:14:13,085 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:13,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:13,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1833475043, now seen corresponding path program 1 times [2022-11-20 20:14:13,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:14:13,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310804395] [2022-11-20 20:14:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:13,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:14:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 20:14:13,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:14:13,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310804395] [2022-11-20 20:14:13,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310804395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:13,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:14:13,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:14:13,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153906826] [2022-11-20 20:14:13,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:13,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:14:13,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:14:13,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:14:13,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:14:13,319 INFO L87 Difference]: Start difference. First operand 5048 states and 7193 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-20 20:14:14,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:14,474 INFO L93 Difference]: Finished difference Result 13001 states and 18529 transitions. [2022-11-20 20:14:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:14:14,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 92 [2022-11-20 20:14:14,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:14,523 INFO L225 Difference]: With dead ends: 13001 [2022-11-20 20:14:14,523 INFO L226 Difference]: Without dead ends: 7954 [2022-11-20 20:14:14,542 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 [2022-11-20 20:14:14,543 INFO L413 NwaCegarLoop]: 1177 mSDtfsCounter, 716 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:14:14,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1819 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:14:14,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7954 states. [2022-11-20 20:14:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7954 to 7940. [2022-11-20 20:14:15,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7940 states, 5471 states have (on average 1.4348382379820874) internal successors, (7850), 5527 states have internal predecessors, (7850), 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) [2022-11-20 20:14:15,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7940 states to 7940 states and 11315 transitions. [2022-11-20 20:14:15,155 INFO L78 Accepts]: Start accepts. Automaton has 7940 states and 11315 transitions. Word has length 92 [2022-11-20 20:14:15,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:15,155 INFO L495 AbstractCegarLoop]: Abstraction has 7940 states and 11315 transitions. [2022-11-20 20:14:15,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-20 20:14:15,156 INFO L276 IsEmpty]: Start isEmpty. Operand 7940 states and 11315 transitions. [2022-11-20 20:14:15,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 20:14:15,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:15,180 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, 1] [2022-11-20 20:14:15,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 20:14:15,181 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:15,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:15,181 INFO L85 PathProgramCache]: Analyzing trace with hash -975482863, now seen corresponding path program 1 times [2022-11-20 20:14:15,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:14:15,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548238950] [2022-11-20 20:14:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:15,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:14:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 20:14:15,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:14:15,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548238950] [2022-11-20 20:14:15,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548238950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:15,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:14:15,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:14:15,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729709237] [2022-11-20 20:14:15,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:15,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:14:15,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:14:15,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:14:15,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:14:15,674 INFO L87 Difference]: Start difference. First operand 7940 states and 11315 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2022-11-20 20:14:16,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:16,711 INFO L93 Difference]: Finished difference Result 15946 states and 22846 transitions. [2022-11-20 20:14:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:14:16,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 103 [2022-11-20 20:14:16,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:16,754 INFO L225 Difference]: With dead ends: 15946 [2022-11-20 20:14:16,754 INFO L226 Difference]: Without dead ends: 8100 [2022-11-20 20:14:16,777 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 [2022-11-20 20:14:16,777 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 7 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:14:16,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1316 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:14:16,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2022-11-20 20:14:17,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 7980. [2022-11-20 20:14:17,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7980 states, 5511 states have (on average 1.4353111957902378) internal successors, (7910), 5567 states have internal predecessors, (7910), 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) [2022-11-20 20:14:17,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7980 states to 7980 states and 11375 transitions. [2022-11-20 20:14:17,395 INFO L78 Accepts]: Start accepts. Automaton has 7980 states and 11375 transitions. Word has length 103 [2022-11-20 20:14:17,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:17,397 INFO L495 AbstractCegarLoop]: Abstraction has 7980 states and 11375 transitions. [2022-11-20 20:14:17,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2022-11-20 20:14:17,397 INFO L276 IsEmpty]: Start isEmpty. Operand 7980 states and 11375 transitions. [2022-11-20 20:14:17,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 20:14:17,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:17,430 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] [2022-11-20 20:14:17,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 20:14:17,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:17,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:17,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2094770340, now seen corresponding path program 1 times [2022-11-20 20:14:17,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:14:17,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173325317] [2022-11-20 20:14:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:17,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:14:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 20:14:19,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:14:19,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173325317] [2022-11-20 20:14:19,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173325317] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:14:19,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620698304] [2022-11-20 20:14:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:19,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:14:19,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:14:19,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:14:19,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:14:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:20,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-20 20:14:20,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:14:20,830 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:14:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:14:21,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:14:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 20:14:50,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620698304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:14:50,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1481431463] [2022-11-20 20:14:50,438 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-20 20:14:50,438 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:14:50,442 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:14:50,447 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:14:50,448 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:15:02,212 INFO L197 IcfgInterpreter]: Interpreting procedure pcmcia_nonstatic_validate_mem with input of size 231 for LOIs [2022-11-20 20:15:02,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:03,267 INFO L321 Elim1Store]: treesize reduction 265, result has 23.6 percent of original size [2022-11-20 20:15:03,268 INFO L350 Elim1Store]: Elim1 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 255 [2022-11-20 20:15:03,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:03,621 INFO L321 Elim1Store]: treesize reduction 251, result has 23.2 percent of original size [2022-11-20 20:15:03,622 INFO L350 Elim1Store]: Elim1 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 470 treesize of output 300 [2022-11-20 20:15:03,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 20:15:03,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:03,948 INFO L321 Elim1Store]: treesize reduction 402, result has 18.8 percent of original size [2022-11-20 20:15:03,948 INFO L350 Elim1Store]: Elim1 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 306 treesize of output 255 [2022-11-20 20:15:04,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:15:10,628 INFO L197 IcfgInterpreter]: Interpreting procedure do_mem_probe with input of size 802 for LOIs [2022-11-20 20:15:15,118 INFO L197 IcfgInterpreter]: Interpreting procedure do_validate_mem with input of size 444 for LOIs [2022-11-20 20:15:16,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:16,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:16,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:16,369 INFO L350 Elim1Store]: Elim1 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 807 treesize of output 773 [2022-11-20 20:15:16,495 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-20 20:15:16,496 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:16,550 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:16,591 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:16,636 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:17,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 20:15:17,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 20:15:17,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:17,283 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:17,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-20 20:15:17,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:17,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:17,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:17,311 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:17,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:17,326 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:17,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-20 20:15:18,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:18,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:18,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:18,426 INFO L350 Elim1Store]: Elim1 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 807 treesize of output 773 [2022-11-20 20:15:18,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:18,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:18,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:18,483 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:18,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:18,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:18,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:18,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:18,565 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 20:15:18,565 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:18,611 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:18,649 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:22,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:22,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:22,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:22,020 INFO L350 Elim1Store]: Elim1 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 807 treesize of output 773 [2022-11-20 20:15:22,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:22,070 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:22,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:22,111 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:22,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:22,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:22,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:22,157 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:22,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:22,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:22,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:22,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:22,231 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 20:15:22,232 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:15:22,917 INFO L197 IcfgInterpreter]: Interpreting procedure claim_region with input of size 333 for LOIs [2022-11-20 20:15:25,590 INFO L197 IcfgInterpreter]: Interpreting procedure pcmcia_make_resource with input of size 352 for LOIs [2022-11-20 20:15:28,649 INFO L197 IcfgInterpreter]: Interpreting procedure kzalloc with input of size 321 for LOIs [2022-11-20 20:15:29,561 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 318 for LOIs [2022-11-20 20:15:30,853 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 318 for LOIs [2022-11-20 20:15:31,164 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:15:43,460 WARN L233 SmtUtils]: Spent 11.61s on a formula simplification. DAG size of input: 914 DAG size of output: 670 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:16,959 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 436 DAG size of output: 291 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:27,732 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 428 DAG size of output: 291 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:33,279 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 430 DAG size of output: 293 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:05,651 WARN L233 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 438 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:15,655 WARN L233 SmtUtils]: Spent 9.39s on a formula simplification. DAG size of input: 442 DAG size of output: 416 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:37,271 WARN L233 SmtUtils]: Spent 17.66s on a formula simplification. DAG size of input: 444 DAG size of output: 401 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:18:16,457 WARN L233 SmtUtils]: Spent 35.51s on a formula simplification. DAG size of input: 530 DAG size of output: 481 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:01,915 WARN L233 SmtUtils]: Spent 11.59s on a formula simplification. DAG size of input: 366 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:23,659 WARN L233 SmtUtils]: Spent 7.70s on a formula simplification. DAG size of input: 366 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:31,119 WARN L233 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 424 DAG size of output: 413 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:52,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1481431463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:19:52,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:19:52,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [6, 23, 6] total 77 [2022-11-20 20:19:52,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750104780] [2022-11-20 20:19:52,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:19:52,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-20 20:19:52,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:19:52,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-20 20:19:52,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=5559, Unknown=1, NotChecked=0, Total=5852 [2022-11-20 20:19:52,881 INFO L87 Difference]: Start difference. First operand 7980 states and 11375 transitions. Second operand has 52 states, 40 states have (on average 1.35) internal successors, (54), 37 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) [2022-11-20 20:20:15,403 WARN L233 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 780 DAG size of output: 684 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:03,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:21:03,356 INFO L93 Difference]: Finished difference Result 18572 states and 27179 transitions. [2022-11-20 20:21:03,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-20 20:21:03,357 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 40 states have (on average 1.35) internal successors, (54), 37 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 [2022-11-20 20:21:03,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:21:03,398 INFO L225 Difference]: With dead ends: 18572 [2022-11-20 20:21:03,399 INFO L226 Difference]: Without dead ends: 10593 [2022-11-20 20:21:03,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 236 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 276.8s TimeCoverageRelationStatistics Valid=316, Invalid=6003, Unknown=1, NotChecked=0, Total=6320 [2022-11-20 20:21:03,423 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 320 mSDsluCounter, 15590 mSDsCounter, 0 mSdLazyCounter, 11067 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 16216 SdHoareTripleChecker+Invalid, 17633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 11067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6513 IncrementalHoareTripleChecker+Unchecked, 53.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:21:03,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 16216 Invalid, 17633 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [53 Valid, 11067 Invalid, 0 Unknown, 6513 Unchecked, 53.9s Time] [2022-11-20 20:21:03,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10593 states. [2022-11-20 20:21:05,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10593 to 9740. [2022-11-20 20:21:05,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9740 states, 6995 states have (on average 1.4634739099356684) internal successors, (10237), 7059 states have internal predecessors, (10237), 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) [2022-11-20 20:21:05,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9740 states to 9740 states and 14174 transitions. [2022-11-20 20:21:05,072 INFO L78 Accepts]: Start accepts. Automaton has 9740 states and 14174 transitions. Word has length 102 [2022-11-20 20:21:05,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:21:05,073 INFO L495 AbstractCegarLoop]: Abstraction has 9740 states and 14174 transitions. [2022-11-20 20:21:05,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 40 states have (on average 1.35) internal successors, (54), 37 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) [2022-11-20 20:21:05,073 INFO L276 IsEmpty]: Start isEmpty. Operand 9740 states and 14174 transitions. [2022-11-20 20:21:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 20:21:05,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:21:05,115 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] [2022-11-20 20:21:05,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:21:05,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 20:21:05,326 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:21:05,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:21:05,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1950830958, now seen corresponding path program 1 times [2022-11-20 20:21:05,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:21:05,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94061030] [2022-11-20 20:21:05,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:21:05,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:21:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:21:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 20:21:06,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:21:06,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94061030] [2022-11-20 20:21:06,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94061030] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:21:06,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115460757] [2022-11-20 20:21:06,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:21:06,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:21:06,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:21:06,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:21:07,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:21:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:21:08,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-20 20:21:08,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:21:08,297 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:21:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 20:21:09,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:21:09,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115460757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:21:09,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:21:09,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [6] total 28 [2022-11-20 20:21:09,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703430920] [2022-11-20 20:21:09,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:21:09,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 20:21:09,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:21:09,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 20:21:09,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=697, Unknown=0, NotChecked=0, Total=756 [2022-11-20 20:21:09,145 INFO L87 Difference]: Start difference. First operand 9740 states and 14174 transitions. Second operand has 24 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 16 states have internal predecessors, (63), 6 states have call successors, (14), 5 states have call predecessors, (14), 7 states have return successors, (12), 8 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 20:21:15,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:21:15,423 INFO L93 Difference]: Finished difference Result 18494 states and 26869 transitions. [2022-11-20 20:21:15,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 20:21:15,424 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 16 states have internal predecessors, (63), 6 states have call successors, (14), 5 states have call predecessors, (14), 7 states have return successors, (12), 8 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-11-20 20:21:15,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:21:15,475 INFO L225 Difference]: With dead ends: 18494 [2022-11-20 20:21:15,475 INFO L226 Difference]: Without dead ends: 10608 [2022-11-20 20:21:15,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=174, Invalid=2178, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 20:21:15,504 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 950 mSDsluCounter, 12527 mSDsCounter, 0 mSdLazyCounter, 3259 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 13174 SdHoareTripleChecker+Invalid, 3348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:21:15,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 13174 Invalid, 3348 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 3259 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 20:21:15,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10608 states. [2022-11-20 20:21:17,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10608 to 10312. [2022-11-20 20:21:17,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10312 states, 7387 states have (on average 1.4599972925409503) internal successors, (10785), 7459 states have internal predecessors, (10785), 2115 states have call successors, (2115), 832 states have call predecessors, (2115), 809 states have return successors, (2158), 2060 states have call predecessors, (2158), 2094 states have call successors, (2158) [2022-11-20 20:21:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10312 states to 10312 states and 15058 transitions. [2022-11-20 20:21:17,275 INFO L78 Accepts]: Start accepts. Automaton has 10312 states and 15058 transitions. Word has length 104 [2022-11-20 20:21:17,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:21:17,276 INFO L495 AbstractCegarLoop]: Abstraction has 10312 states and 15058 transitions. [2022-11-20 20:21:17,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 16 states have internal predecessors, (63), 6 states have call successors, (14), 5 states have call predecessors, (14), 7 states have return successors, (12), 8 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 20:21:17,276 INFO L276 IsEmpty]: Start isEmpty. Operand 10312 states and 15058 transitions. [2022-11-20 20:21:17,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-20 20:21:17,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:21:17,312 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, 1, 1, 1, 1, 1] [2022-11-20 20:21:17,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:21:17,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 20:21:17,524 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:21:17,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:21:17,525 INFO L85 PathProgramCache]: Analyzing trace with hash 557835287, now seen corresponding path program 1 times [2022-11-20 20:21:17,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:21:17,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638366213] [2022-11-20 20:21:17,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:21:17,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:21:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:21:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 20:21:19,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:21:19,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638366213] [2022-11-20 20:21:19,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638366213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:21:19,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728407928] [2022-11-20 20:21:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:21:19,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:21:19,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:21:19,372 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:21:19,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a569737d-4417-4528-9742-94e83156bee0/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:21:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:21:21,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-20 20:21:21,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:21:21,158 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:21:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 20:21:21,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:21:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 20:21:50,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728407928] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:21:50,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1891461918] [2022-11-20 20:21:50,455 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2022-11-20 20:21:50,456 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:21:50,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:21:50,456 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:21:50,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:22:00,433 INFO L197 IcfgInterpreter]: Interpreting procedure pcmcia_nonstatic_validate_mem with input of size 231 for LOIs [2022-11-20 20:22:01,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:01,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:01,343 INFO L321 Elim1Store]: treesize reduction 251, result has 23.2 percent of original size [2022-11-20 20:22:01,343 INFO L350 Elim1Store]: Elim1 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 251 [2022-11-20 20:22:01,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:01,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:01,600 INFO L321 Elim1Store]: treesize reduction 265, result has 23.6 percent of original size [2022-11-20 20:22:01,600 INFO L350 Elim1Store]: Elim1 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 465 treesize of output 299 [2022-11-20 20:22:01,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 20:22:01,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:22:01,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:01,957 INFO L321 Elim1Store]: treesize reduction 402, result has 18.8 percent of original size [2022-11-20 20:22:01,958 INFO L350 Elim1Store]: Elim1 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 306 treesize of output 255 [2022-11-20 20:22:06,611 INFO L197 IcfgInterpreter]: Interpreting procedure do_mem_probe with input of size 760 for LOIs [2022-11-20 20:22:10,455 INFO L197 IcfgInterpreter]: Interpreting procedure do_validate_mem with input of size 444 for LOIs [2022-11-20 20:22:11,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:11,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:11,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:11,465 INFO L350 Elim1Store]: Elim1 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 807 treesize of output 773 [2022-11-20 20:22:11,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:11,962 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:12,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:12,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:12,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:12,016 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:12,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:12,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:12,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:12,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:12,094 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 20:22:12,094 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:12,133 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:12,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 20:22:12,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 20:22:12,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:12,454 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:12,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-20 20:22:12,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:12,485 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:12,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-20 20:22:12,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:12,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:12,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:12,520 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:13,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:13,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:13,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:13,702 INFO L350 Elim1Store]: Elim1 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 807 treesize of output 773 [2022-11-20 20:22:14,210 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-20 20:22:14,210 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:14,273 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:14,323 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:14,362 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:17,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:17,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:17,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:17,580 INFO L350 Elim1Store]: Elim1 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 807 treesize of output 773 [2022-11-20 20:22:17,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:17,629 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:17,743 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-20 20:22:17,743 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:17,786 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:17,831 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:18,445 INFO L197 IcfgInterpreter]: Interpreting procedure claim_region with input of size 333 for LOIs [2022-11-20 20:22:22,333 INFO L197 IcfgInterpreter]: Interpreting procedure pcmcia_make_resource with input of size 352 for LOIs [2022-11-20 20:22:24,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:24,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:24,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:24,248 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:24,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:24,293 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:24,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-20 20:22:24,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:22:24,389 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:22:24,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-20 20:22:24,738 INFO L197 IcfgInterpreter]: Interpreting procedure kzalloc with input of size 321 for LOIs [2022-11-20 20:22:26,118 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 318 for LOIs [2022-11-20 20:22:27,431 INFO L197 IcfgInterpreter]: Interpreting procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int with input of size 350 for LOIs [2022-11-20 20:22:28,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 37 treesize of output 36 [2022-11-20 20:22:28,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 32 [2022-11-20 20:22:28,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 20:22:28,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:22:28,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 20:22:29,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 37 treesize of output 36 [2022-11-20 20:22:29,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 32 [2022-11-20 20:22:29,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 20:22:29,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 20:22:29,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:22:30,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 20:22:30,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 20:22:30,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 20:22:30,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 37 treesize of output 36 [2022-11-20 20:22:30,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 32 [2022-11-20 20:22:30,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 20:22:30,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:22:30,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 20:22:31,045 INFO L197 IcfgInterpreter]: Interpreting procedure ioremap with input of size 371 for LOIs [2022-11-20 20:22:33,360 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 372 for LOIs [2022-11-20 20:22:38,801 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_mutex_unlock_ops_mutex_of_pcmcia_socket with input of size 332 for LOIs [2022-11-20 20:22:39,260 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_error with input of size 332 for LOIs [2022-11-20 20:22:39,605 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:22:54,021 WARN L233 SmtUtils]: Spent 11.86s on a formula simplification. DAG size of input: 914 DAG size of output: 670 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:11,427 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 427 DAG size of output: 282 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:16,890 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 430 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:22,389 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 433 DAG size of output: 288 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:28,043 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 436 DAG size of output: 291 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:38,924 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 428 DAG size of output: 291 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:44,582 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 430 DAG size of output: 293 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:50,054 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 418 DAG size of output: 281 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:57,166 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 439 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:23,692 WARN L233 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 438 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:34,852 WARN L233 SmtUtils]: Spent 10.52s on a formula simplification. DAG size of input: 442 DAG size of output: 416 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:47,174 WARN L233 SmtUtils]: Spent 9.66s on a formula simplification. DAG size of input: 444 DAG size of output: 401 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:25:26,702 WARN L233 SmtUtils]: Spent 37.69s on a formula simplification. DAG size of input: 530 DAG size of output: 481 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:26:05,305 WARN L233 SmtUtils]: Spent 10.86s on a formula simplification. DAG size of input: 372 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:26:28,526 WARN L233 SmtUtils]: Spent 22.17s on a formula simplification. DAG size of input: 427 DAG size of output: 415 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:26:41,243 WARN L233 SmtUtils]: Spent 11.95s on a formula simplification. DAG size of input: 366 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:26:57,760 WARN L233 SmtUtils]: Spent 10.82s on a formula simplification. DAG size of input: 360 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)