./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta --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 7f108eec0e6f75d7c7724c96156fb3bec5ecbcd0f2a8def1b3ebffa34d9deb6c --- 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-dbf71c6-m [2022-10-17 17:22:54,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:22:54,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:22:54,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:22:54,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:22:54,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:22:54,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:22:54,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:22:54,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:22:54,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:22:54,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:22:54,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:22:54,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:22:54,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:22:54,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:22:54,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:22:54,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:22:54,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:22:54,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:22:54,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:22:54,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:22:54,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:22:54,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:22:54,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:22:54,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:22:54,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:22:54,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:22:54,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:22:54,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:22:54,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:22:54,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:22:54,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:22:54,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:22:54,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:22:54,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:22:54,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:22:54,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:22:54,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:22:54,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:22:54,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:22:54,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:22:54,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:22:54,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:22:54,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:22:54,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:22:54,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:22:54,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:22:54,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:22:54,469 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:22:54,470 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:22:54,470 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:22:54,470 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:22:54,471 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:22:54,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:22:54,472 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:22:54,472 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:22:54,472 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:22:54,472 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:22:54,473 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:22:54,473 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:22:54,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:22:54,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:22:54,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:22:54,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:22:54,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:22:54,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:22:54,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:22:54,477 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:22:54,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:22:54,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:22:54,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:22:54,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:22:54,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:22:54,478 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:22:54,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:22:54,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:22:54,479 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:22:54,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:22:54,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:22:54,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:22:54,480 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_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f108eec0e6f75d7c7724c96156fb3bec5ecbcd0f2a8def1b3ebffa34d9deb6c [2022-10-17 17:22:54,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:22:54,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:22:54,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:22:54,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:22:54,774 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:22:54,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2022-10-17 17:22:54,841 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/data/34fcd7cd1/c879ac30ad784150bb9435405827f6ba/FLAG777d7b32d [2022-10-17 17:22:55,687 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:22:55,687 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2022-10-17 17:22:55,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/data/34fcd7cd1/c879ac30ad784150bb9435405827f6ba/FLAG777d7b32d [2022-10-17 17:22:56,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/data/34fcd7cd1/c879ac30ad784150bb9435405827f6ba [2022-10-17 17:22:56,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:22:56,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:22:56,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:22:56,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:22:56,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:22:56,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:22:56" (1/1) ... [2022-10-17 17:22:56,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2db2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:56, skipping insertion in model container [2022-10-17 17:22:56,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:22:56" (1/1) ... [2022-10-17 17:22:56,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:22:56,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:22:57,517 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2022-10-17 17:22:58,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:22:58,167 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:22:58,302 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2022-10-17 17:22:58,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:22:58,670 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:22:58,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58 WrapperNode [2022-10-17 17:22:58,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:22:58,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:22:58,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:22:58,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:22:58,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58" (1/1) ... [2022-10-17 17:22:58,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58" (1/1) ... [2022-10-17 17:22:58,940 INFO L138 Inliner]: procedures = 222, calls = 1486, calls flagged for inlining = 101, calls inlined = 96, statements flattened = 3995 [2022-10-17 17:22:58,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:22:58,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:22:58,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:22:58,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:22:58,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58" (1/1) ... [2022-10-17 17:22:58,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58" (1/1) ... [2022-10-17 17:22:58,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58" (1/1) ... [2022-10-17 17:22:58,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58" (1/1) ... [2022-10-17 17:22:59,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58" (1/1) ... [2022-10-17 17:22:59,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58" (1/1) ... [2022-10-17 17:22:59,228 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58" (1/1) ... [2022-10-17 17:22:59,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58" (1/1) ... [2022-10-17 17:22:59,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:22:59,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:22:59,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:22:59,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:22:59,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58" (1/1) ... [2022-10-17 17:22:59,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:22:59,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:22:59,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:22:59,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdad2e06-8f6c-4a27-a2a5-121c71dff6e0/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:22:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-10-17 17:22:59,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-10-17 17:22:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_18 [2022-10-17 17:22:59,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_18 [2022-10-17 17:22:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 17:22:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 17:22:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 17:22:59,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 17:22:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2022-10-17 17:22:59,366 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2022-10-17 17:22:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-10-17 17:22:59,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-10-17 17:22:59,367 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_handle_firmware_update [2022-10-17 17:22:59,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_handle_firmware_update [2022-10-17 17:22:59,367 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-10-17 17:22:59,367 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-10-17 17:22:59,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:22:59,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:22:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-10-17 17:22:59,368 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-10-17 17:22:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-10-17 17:22:59,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-10-17 17:22:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-10-17 17:22:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-10-17 17:22:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_get_info [2022-10-17 17:22:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_get_info [2022-10-17 17:22:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-10-17 17:22:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-10-17 17:22:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 17:22:59,370 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 17:22:59,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:22:59,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:22:59,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 17:22:59,370 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 17:22:59,371 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:22:59,371 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:22:59,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-10-17 17:22:59,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-10-17 17:22:59,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:22:59,371 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-10-17 17:22:59,372 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-10-17 17:22:59,372 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 17:22:59,372 INFO L130 BoogieDeclarations]: Found specification of procedure ihex_next_binrec [2022-10-17 17:22:59,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ihex_next_binrec [2022-10-17 17:22:59,372 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-10-17 17:22:59,372 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-10-17 17:22:59,373 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_buffers_free [2022-10-17 17:22:59,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_buffers_free [2022-10-17 17:22:59,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:22:59,373 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2022-10-17 17:22:59,373 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2022-10-17 17:22:59,373 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-10-17 17:22:59,374 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2022-10-17 17:22:59,374 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2022-10-17 17:22:59,374 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_attribute_show [2022-10-17 17:22:59,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_attribute_show [2022-10-17 17:22:59,374 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2022-10-17 17:22:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2022-10-17 17:22:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:22:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:22:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-17 17:22:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-17 17:22:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-17 17:22:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-17 17:22:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-10-17 17:22:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-10-17 17:22:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-10-17 17:22:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-10-17 17:22:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure __ims_pcu_execute_command [2022-10-17 17:22:59,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __ims_pcu_execute_command [2022-10-17 17:22:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-10-17 17:22:59,377 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-10-17 17:22:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure __ims_pcu_execute_bl_command [2022-10-17 17:22:59,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __ims_pcu_execute_bl_command [2022-10-17 17:22:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-10-17 17:22:59,378 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-10-17 17:22:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 17:22:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-17 17:22:59,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-17 17:22:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-10-17 17:22:59,378 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-10-17 17:22:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 17:22:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2022-10-17 17:22:59,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2022-10-17 17:22:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2022-10-17 17:22:59,379 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2022-10-17 17:22:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:22:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-10-17 17:22:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-10-17 17:22:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-10-17 17:22:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-10-17 17:22:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_destroy_backlight [2022-10-17 17:22:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_destroy_backlight [2022-10-17 17:22:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_attribute_store [2022-10-17 17:22:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_attribute_store [2022-10-17 17:22:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 17:22:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 17:22:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-17 17:22:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-17 17:22:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_resume [2022-10-17 17:22:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_resume [2022-10-17 17:22:59,382 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-17 17:22:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-17 17:22:59,382 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_destroy_buttons [2022-10-17 17:22:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_destroy_buttons [2022-10-17 17:22:59,382 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 17:22:59,383 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 17:22:59,383 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_start_io [2022-10-17 17:22:59,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_start_io [2022-10-17 17:22:59,383 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-10-17 17:22:59,383 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-10-17 17:22:59,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:22:59,384 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2022-10-17 17:22:59,384 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2022-10-17 17:22:59,384 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-10-17 17:22:59,384 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-10-17 17:22:59,384 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_send_cmd_chunk [2022-10-17 17:22:59,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_send_cmd_chunk [2022-10-17 17:22:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoint [2022-10-17 17:22:59,385 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoint [2022-10-17 17:22:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:22:59,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:22:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:22:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_2 [2022-10-17 17:22:59,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_2 [2022-10-17 17:22:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2022-10-17 17:22:59,386 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2022-10-17 17:22:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_line_setup [2022-10-17 17:22:59,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_line_setup [2022-10-17 17:22:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-10-17 17:22:59,387 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-10-17 17:22:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:22:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_stop_io [2022-10-17 17:22:59,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_stop_io [2022-10-17 17:22:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-10-17 17:22:59,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-10-17 17:22:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_byte_needs_escape [2022-10-17 17:22:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_byte_needs_escape [2022-10-17 17:22:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:22:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-10-17 17:22:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-10-17 17:22:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 17:22:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 17:22:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2022-10-17 17:22:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2022-10-17 17:22:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-10-17 17:22:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-10-17 17:22:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-10-17 17:22:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-10-17 17:22:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure ihex_validate_fw [2022-10-17 17:22:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ihex_validate_fw [2022-10-17 17:22:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_irq [2022-10-17 17:22:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_irq [2022-10-17 17:22:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-10-17 17:22:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-10-17 17:22:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-10-17 17:22:59,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-10-17 17:22:59,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:22:59,391 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_disconnect [2022-10-17 17:22:59,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_disconnect [2022-10-17 17:22:59,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:22:59,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:23:00,238 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:23:00,245 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:23:00,424 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 17:23:01,971 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-10-17 17:23:03,790 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:23:04,585 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:23:04,585 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:23:04,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:04 BoogieIcfgContainer [2022-10-17 17:23:04,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:23:04,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:23:04,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:23:04,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:23:04,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:22:56" (1/3) ... [2022-10-17 17:23:04,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8bf1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:04, skipping insertion in model container [2022-10-17 17:23:04,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58" (2/3) ... [2022-10-17 17:23:04,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8bf1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:04, skipping insertion in model container [2022-10-17 17:23:04,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:04" (3/3) ... [2022-10-17 17:23:04,600 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2022-10-17 17:23:04,619 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:23:04,620 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:23:04,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:23:04,700 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;@1593ec88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:23:04,701 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:23:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 589 states have (on average 1.366723259762309) internal successors, (805), 622 states have internal predecessors, (805), 283 states have call successors, (283), 72 states have call predecessors, (283), 70 states have return successors, (268), 267 states have call predecessors, (268), 268 states have call successors, (268) [2022-10-17 17:23:04,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-10-17 17:23:04,732 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:04,733 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:04,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:04,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:04,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2122519472, now seen corresponding path program 1 times [2022-10-17 17:23:04,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:04,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700242201] [2022-10-17 17:23:04,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:04,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-10-17 17:23:05,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:05,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700242201] [2022-10-17 17:23:05,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700242201] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:05,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:05,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:05,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171278823] [2022-10-17 17:23:05,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:05,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:05,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:05,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:05,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:05,727 INFO L87 Difference]: Start difference. First operand has 944 states, 589 states have (on average 1.366723259762309) internal successors, (805), 622 states have internal predecessors, (805), 283 states have call successors, (283), 72 states have call predecessors, (283), 70 states have return successors, (268), 267 states have call predecessors, (268), 268 states have call successors, (268) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-10-17 17:23:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:08,072 INFO L93 Difference]: Finished difference Result 2686 states and 3851 transitions. [2022-10-17 17:23:08,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:08,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 168 [2022-10-17 17:23:08,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:08,109 INFO L225 Difference]: With dead ends: 2686 [2022-10-17 17:23:08,110 INFO L226 Difference]: Without dead ends: 1757 [2022-10-17 17:23:08,123 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 [2022-10-17 17:23:08,128 INFO L413 NwaCegarLoop]: 1437 mSDtfsCounter, 1202 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:08,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 2634 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 17:23:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2022-10-17 17:23:08,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1757. [2022-10-17 17:23:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1125 states have (on average 1.3466666666666667) internal successors, (1515), 1153 states have internal predecessors, (1515), 493 states have call successors, (493), 139 states have call predecessors, (493), 138 states have return successors, (488), 486 states have call predecessors, (488), 488 states have call successors, (488) [2022-10-17 17:23:08,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2496 transitions. [2022-10-17 17:23:08,404 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2496 transitions. Word has length 168 [2022-10-17 17:23:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:08,407 INFO L495 AbstractCegarLoop]: Abstraction has 1757 states and 2496 transitions. [2022-10-17 17:23:08,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-10-17 17:23:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2496 transitions. [2022-10-17 17:23:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-10-17 17:23:08,426 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:08,427 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:08,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:23:08,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:08,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:08,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2070058952, now seen corresponding path program 1 times [2022-10-17 17:23:08,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:08,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855202936] [2022-10-17 17:23:08,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:08,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-10-17 17:23:09,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:09,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855202936] [2022-10-17 17:23:09,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855202936] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:09,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:09,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:09,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543048180] [2022-10-17 17:23:09,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:09,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:09,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:09,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:09,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:09,543 INFO L87 Difference]: Start difference. First operand 1757 states and 2496 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-10-17 17:23:11,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:23:13,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:23:14,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:23:14,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:14,817 INFO L93 Difference]: Finished difference Result 3411 states and 4839 transitions. [2022-10-17 17:23:14,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:14,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2022-10-17 17:23:14,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:14,847 INFO L225 Difference]: With dead ends: 3411 [2022-10-17 17:23:14,848 INFO L226 Difference]: Without dead ends: 3408 [2022-10-17 17:23:14,853 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 [2022-10-17 17:23:14,854 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1201 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:14,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 2627 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-10-17 17:23:14,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2022-10-17 17:23:15,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3396. [2022-10-17 17:23:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 2183 states have (on average 1.3518094365551994) internal successors, (2951), 2237 states have internal predecessors, (2951), 938 states have call successors, (938), 277 states have call predecessors, (938), 274 states have return successors, (933), 925 states have call predecessors, (933), 933 states have call successors, (933) [2022-10-17 17:23:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 4822 transitions. [2022-10-17 17:23:15,083 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 4822 transitions. Word has length 177 [2022-10-17 17:23:15,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:15,084 INFO L495 AbstractCegarLoop]: Abstraction has 3396 states and 4822 transitions. [2022-10-17 17:23:15,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-10-17 17:23:15,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 4822 transitions. [2022-10-17 17:23:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-10-17 17:23:15,088 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:15,089 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:15,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:23:15,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:15,090 INFO L85 PathProgramCache]: Analyzing trace with hash -253250822, now seen corresponding path program 1 times [2022-10-17 17:23:15,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:15,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884759838] [2022-10-17 17:23:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:15,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-10-17 17:23:15,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:15,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884759838] [2022-10-17 17:23:15,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884759838] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:15,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:15,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:15,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112894347] [2022-10-17 17:23:15,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:15,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:15,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:15,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:15,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:15,854 INFO L87 Difference]: Start difference. First operand 3396 states and 4822 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-10-17 17:23:17,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:23:17,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:17,815 INFO L93 Difference]: Finished difference Result 3398 states and 4823 transitions. [2022-10-17 17:23:17,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:17,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 178 [2022-10-17 17:23:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:17,844 INFO L225 Difference]: With dead ends: 3398 [2022-10-17 17:23:17,845 INFO L226 Difference]: Without dead ends: 3395 [2022-10-17 17:23:17,848 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 [2022-10-17 17:23:17,849 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 1242 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:17,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1171 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-17 17:23:17,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2022-10-17 17:23:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3395. [2022-10-17 17:23:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3395 states, 2183 states have (on average 1.3513513513513513) internal successors, (2950), 2236 states have internal predecessors, (2950), 937 states have call successors, (937), 277 states have call predecessors, (937), 274 states have return successors, (933), 925 states have call predecessors, (933), 933 states have call successors, (933) [2022-10-17 17:23:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3395 states to 3395 states and 4820 transitions. [2022-10-17 17:23:18,151 INFO L78 Accepts]: Start accepts. Automaton has 3395 states and 4820 transitions. Word has length 178 [2022-10-17 17:23:18,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:18,153 INFO L495 AbstractCegarLoop]: Abstraction has 3395 states and 4820 transitions. [2022-10-17 17:23:18,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-10-17 17:23:18,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3395 states and 4820 transitions. [2022-10-17 17:23:18,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-10-17 17:23:18,157 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:18,157 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:18,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:23:18,158 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:18,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:18,159 INFO L85 PathProgramCache]: Analyzing trace with hash 738595083, now seen corresponding path program 1 times [2022-10-17 17:23:18,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:18,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649614423] [2022-10-17 17:23:18,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:18,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-10-17 17:23:18,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:18,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649614423] [2022-10-17 17:23:18,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649614423] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:18,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:18,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:18,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728799750] [2022-10-17 17:23:18,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:18,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:18,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:18,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:18,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:18,491 INFO L87 Difference]: Start difference. First operand 3395 states and 4820 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-10-17 17:23:21,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:23:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:22,107 INFO L93 Difference]: Finished difference Result 6437 states and 9136 transitions. [2022-10-17 17:23:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:22,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 179 [2022-10-17 17:23:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:22,172 INFO L225 Difference]: With dead ends: 6437 [2022-10-17 17:23:22,172 INFO L226 Difference]: Without dead ends: 6434 [2022-10-17 17:23:22,177 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 [2022-10-17 17:23:22,181 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 1132 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:22,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 2470 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 282 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-10-17 17:23:22,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6434 states. [2022-10-17 17:23:22,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6434 to 6431. [2022-10-17 17:23:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6431 states, 4189 states have (on average 1.357125805681547) internal successors, (5685), 4288 states have internal predecessors, (5685), 1725 states have call successors, (1725), 521 states have call predecessors, (1725), 516 states have return successors, (1721), 1705 states have call predecessors, (1721), 1721 states have call successors, (1721) [2022-10-17 17:23:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6431 states to 6431 states and 9131 transitions. [2022-10-17 17:23:22,747 INFO L78 Accepts]: Start accepts. Automaton has 6431 states and 9131 transitions. Word has length 179 [2022-10-17 17:23:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:22,748 INFO L495 AbstractCegarLoop]: Abstraction has 6431 states and 9131 transitions. [2022-10-17 17:23:22,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-10-17 17:23:22,749 INFO L276 IsEmpty]: Start isEmpty. Operand 6431 states and 9131 transitions. [2022-10-17 17:23:22,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-10-17 17:23:22,757 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:22,758 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:22,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:23:22,758 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:22,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:22,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1421051933, now seen corresponding path program 1 times [2022-10-17 17:23:22,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:22,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179616396] [2022-10-17 17:23:22,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:22,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-10-17 17:23:23,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:23,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179616396] [2022-10-17 17:23:23,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179616396] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:23,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:23,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:23,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041947483] [2022-10-17 17:23:23,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:23,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:23,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:23,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:23,095 INFO L87 Difference]: Start difference. First operand 6431 states and 9131 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-10-17 17:23:24,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:24,543 INFO L93 Difference]: Finished difference Result 6433 states and 9132 transitions. [2022-10-17 17:23:24,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:24,543 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 180 [2022-10-17 17:23:24,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:24,618 INFO L225 Difference]: With dead ends: 6433 [2022-10-17 17:23:24,618 INFO L226 Difference]: Without dead ends: 6430 [2022-10-17 17:23:24,624 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 [2022-10-17 17:23:24,627 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 1238 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:24,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 1169 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-17 17:23:24,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6430 states. [2022-10-17 17:23:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6430 to 6430. [2022-10-17 17:23:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6430 states, 4189 states have (on average 1.3568870852232036) internal successors, (5684), 4287 states have internal predecessors, (5684), 1724 states have call successors, (1724), 521 states have call predecessors, (1724), 516 states have return successors, (1721), 1705 states have call predecessors, (1721), 1721 states have call successors, (1721) [2022-10-17 17:23:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6430 states to 6430 states and 9129 transitions. [2022-10-17 17:23:25,178 INFO L78 Accepts]: Start accepts. Automaton has 6430 states and 9129 transitions. Word has length 180 [2022-10-17 17:23:25,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:25,180 INFO L495 AbstractCegarLoop]: Abstraction has 6430 states and 9129 transitions. [2022-10-17 17:23:25,180 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-10-17 17:23:25,180 INFO L276 IsEmpty]: Start isEmpty. Operand 6430 states and 9129 transitions. [2022-10-17 17:23:25,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-10-17 17:23:25,184 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:25,184 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:25,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:23:25,184 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:25,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:25,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1102382670, now seen corresponding path program 1 times [2022-10-17 17:23:25,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:25,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140725063] [2022-10-17 17:23:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:25,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-10-17 17:23:25,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:25,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140725063] [2022-10-17 17:23:25,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140725063] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:25,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:25,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957056200] [2022-10-17 17:23:25,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:25,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:25,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:25,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:25,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:25,456 INFO L87 Difference]: Start difference. First operand 6430 states and 9129 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)