./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 3b154baf348652a9aadd484f41053a90df6581eb3d7346fd488d4cc05040e74b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:39:09,538 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:39:09,619 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 12:39:09,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:39:09,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:39:09,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:39:09,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:39:09,650 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:39:09,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:39:09,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:39:09,653 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:39:09,654 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:39:09,654 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:39:09,656 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:39:09,657 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:39:09,657 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:39:09,657 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:39:09,658 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:39:09,658 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:39:09,658 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:39:09,659 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:39:09,663 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:39:09,664 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:39:09,664 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:39:09,664 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:39:09,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:39:09,665 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:39:09,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:39:09,665 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:39:09,666 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:39:09,666 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:39:09,666 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:39:09,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:39:09,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:39:09,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:39:09,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:39:09,671 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:39:09,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:39:09,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:39:09,672 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:39:09,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:39:09,673 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:39:09,674 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:39:09,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:39:09,674 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b154baf348652a9aadd484f41053a90df6581eb3d7346fd488d4cc05040e74b [2024-11-02 12:39:10,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:39:10,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:39:10,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:39:10,040 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:39:10,040 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:39:10,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i Unable to find full path for "g++" [2024-11-02 12:39:12,023 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:39:12,511 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:39:12,511 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2024-11-02 12:39:12,545 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2/data/5362f8aeb/116fff6c1eeb4604bbf513a96ed68489/FLAG35f2eb83b [2024-11-02 12:39:12,595 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2/data/5362f8aeb/116fff6c1eeb4604bbf513a96ed68489 [2024-11-02 12:39:12,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:39:12,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:39:12,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:39:12,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:39:12,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:39:12,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:39:12" (1/1) ... [2024-11-02 12:39:12,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@721f31fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:12, skipping insertion in model container [2024-11-02 12:39:12,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:39:12" (1/1) ... [2024-11-02 12:39:12,722 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:39:13,836 WARN L251 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_1bd68332-765b-4c57-a5d6-40e645bdefc7/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i[119285,119298] [2024-11-02 12:39:13,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:39:13,991 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:39:14,190 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [2827] [2024-11-02 12:39:14,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0; sete %1": "+m" (v->counter), "=qm" (c): : "memory"); [2834-2835] [2024-11-02 12:39:14,299 WARN L251 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_1bd68332-765b-4c57-a5d6-40e645bdefc7/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i[119285,119298] [2024-11-02 12:39:14,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:39:14,385 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:39:14,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14 WrapperNode [2024-11-02 12:39:14,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:39:14,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:39:14,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:39:14,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:39:14,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2024-11-02 12:39:14,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2024-11-02 12:39:14,587 INFO L138 Inliner]: procedures = 146, calls = 1519, calls flagged for inlining = 50, calls inlined = 42, statements flattened = 2430 [2024-11-02 12:39:14,587 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:39:14,589 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:39:14,589 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:39:14,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:39:14,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2024-11-02 12:39:14,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2024-11-02 12:39:14,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2024-11-02 12:39:14,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2024-11-02 12:39:14,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2024-11-02 12:39:14,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2024-11-02 12:39:14,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2024-11-02 12:39:14,786 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2024-11-02 12:39:14,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:39:14,819 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:39:14,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:39:14,819 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:39:14,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2024-11-02 12:39:14,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:39:14,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:14,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:39:14,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd68332-765b-4c57-a5d6-40e645bdefc7/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:39:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2024-11-02 12:39:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2024-11-02 12:39:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2024-11-02 12:39:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2024-11-02 12:39:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2024-11-02 12:39:14,948 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2024-11-02 12:39:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pt_mutex [2024-11-02 12:39:14,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pt_mutex [2024-11-02 12:39:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2024-11-02 12:39:14,948 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2024-11-02 12:39:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 12:39:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 12:39:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:39:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2024-11-02 12:39:14,949 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2024-11-02 12:39:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2024-11-02 12:39:14,949 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2024-11-02 12:39:14,950 INFO L130 BoogieDeclarations]: Found specification of procedure pt_media_access_cmd [2024-11-02 12:39:14,950 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_media_access_cmd [2024-11-02 12:39:14,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-02 12:39:14,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-02 12:39:14,950 INFO L130 BoogieDeclarations]: Found specification of procedure pt_reset [2024-11-02 12:39:14,950 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_reset [2024-11-02 12:39:14,950 INFO L130 BoogieDeclarations]: Found specification of procedure pt_identify [2024-11-02 12:39:14,950 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_identify [2024-11-02 12:39:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure pt_command [2024-11-02 12:39:14,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_command [2024-11-02 12:39:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:39:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-02 12:39:14,953 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-02 12:39:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write [2024-11-02 12:39:14,953 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write [2024-11-02 12:39:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-02 12:39:14,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-02 12:39:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-02 12:39:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-02 12:39:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure pt_atapi [2024-11-02 12:39:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_atapi [2024-11-02 12:39:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:39:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure pt_poll_dsc [2024-11-02 12:39:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_poll_dsc [2024-11-02 12:39:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pt_mutex [2024-11-02 12:39:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pt_mutex [2024-11-02 12:39:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2024-11-02 12:39:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2024-11-02 12:39:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure pt_req_sense [2024-11-02 12:39:14,955 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_req_sense [2024-11-02 12:39:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2024-11-02 12:39:14,955 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2024-11-02 12:39:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:39:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_17 [2024-11-02 12:39:14,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_17 [2024-11-02 12:39:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2024-11-02 12:39:14,955 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2024-11-02 12:39:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2024-11-02 12:39:14,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2024-11-02 12:39:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:39:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:39:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure DRIVE [2024-11-02 12:39:14,958 INFO L138 BoogieDeclarations]: Found implementation of procedure DRIVE [2024-11-02 12:39:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure pt_completion [2024-11-02 12:39:14,959 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_completion [2024-11-02 12:39:14,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:39:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure pt_sleep [2024-11-02 12:39:14,960 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_sleep [2024-11-02 12:39:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write_fm [2024-11-02 12:39:14,960 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write_fm [2024-11-02 12:39:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2024-11-02 12:39:14,960 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2024-11-02 12:39:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2024-11-02 12:39:14,961 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2024-11-02 12:39:14,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:39:14,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:39:14,961 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2024-11-02 12:39:14,961 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2024-11-02 12:39:14,961 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2024-11-02 12:39:14,961 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2024-11-02 12:39:14,962 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2024-11-02 12:39:14,962 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2024-11-02 12:39:14,962 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-02 12:39:14,962 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-02 12:39:14,962 INFO L130 BoogieDeclarations]: Found specification of procedure pt_wait [2024-11-02 12:39:14,962 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_wait [2024-11-02 12:39:14,962 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2024-11-02 12:39:14,962 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2024-11-02 12:39:14,962 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2024-11-02 12:39:14,962 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2024-11-02 12:39:14,963 INFO L130 BoogieDeclarations]: Found specification of procedure pt_probe [2024-11-02 12:39:14,964 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_probe [2024-11-02 12:39:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:39:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure pt_rewind [2024-11-02 12:39:14,965 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_rewind [2024-11-02 12:39:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2024-11-02 12:39:14,965 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2024-11-02 12:39:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure xn [2024-11-02 12:39:14,965 INFO L138 BoogieDeclarations]: Found implementation of procedure xn [2024-11-02 12:39:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2024-11-02 12:39:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2024-11-02 12:39:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:39:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:39:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2024-11-02 12:39:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2024-11-02 12:39:15,417 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:39:15,424 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:39:26,849 INFO L? ?]: Removed 709 outVars from TransFormulas that were not future-live. [2024-11-02 12:39:26,849 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:39:27,829 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:39:27,829 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-02 12:39:27,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:39:27 BoogieIcfgContainer [2024-11-02 12:39:27,830 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:39:27,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:39:27,836 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:39:27,839 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:39:27,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:39:12" (1/3) ... [2024-11-02 12:39:27,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd77e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:39:27, skipping insertion in model container [2024-11-02 12:39:27,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (2/3) ... [2024-11-02 12:39:27,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd77e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:39:27, skipping insertion in model container [2024-11-02 12:39:27,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:39:27" (3/3) ... [2024-11-02 12:39:27,844 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2024-11-02 12:39:27,864 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:39:27,864 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:39:27,997 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:39:28,005 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@33b26c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:39:28,006 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:39:28,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 618 states, 385 states have (on average 1.3532467532467531) internal successors, (521), 406 states have internal predecessors, (521), 191 states have call successors, (191), 44 states have call predecessors, (191), 44 states have return successors, (191), 191 states have call predecessors, (191), 191 states have call successors, (191) [2024-11-02 12:39:28,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-02 12:39:28,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:28,029 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:28,030 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:39:28,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:28,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1118752193, now seen corresponding path program 1 times [2024-11-02 12:39:28,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:28,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618502453] [2024-11-02 12:39:28,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:28,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:39:29,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:29,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618502453] [2024-11-02 12:39:29,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618502453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:29,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:29,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:39:29,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282871381] [2024-11-02 12:39:29,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:29,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:39:29,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:29,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:39:29,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:39:29,890 INFO L87 Difference]: Start difference. First operand has 618 states, 385 states have (on average 1.3532467532467531) internal successors, (521), 406 states have internal predecessors, (521), 191 states have call successors, (191), 44 states have call predecessors, (191), 44 states have return successors, (191), 191 states have call predecessors, (191), 191 states have call successors, (191) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:39:31,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:39:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:34,075 INFO L93 Difference]: Finished difference Result 1519 states and 2253 transitions. [2024-11-02 12:39:34,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:39:34,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-02 12:39:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:34,116 INFO L225 Difference]: With dead ends: 1519 [2024-11-02 12:39:34,116 INFO L226 Difference]: Without dead ends: 898 [2024-11-02 12:39:34,128 INFO L431 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 [2024-11-02 12:39:34,132 INFO L432 NwaCegarLoop]: 976 mSDtfsCounter, 421 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:34,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1712 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 258 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2024-11-02 12:39:34,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2024-11-02 12:39:34,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 876. [2024-11-02 12:39:34,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 542 states have (on average 1.3431734317343174) internal successors, (728), 563 states have internal predecessors, (728), 266 states have call successors, (266), 68 states have call predecessors, (266), 67 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) [2024-11-02 12:39:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1254 transitions. [2024-11-02 12:39:34,329 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1254 transitions. Word has length 16 [2024-11-02 12:39:34,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:34,329 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 1254 transitions. [2024-11-02 12:39:34,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:39:34,330 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1254 transitions. [2024-11-02 12:39:34,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:39:34,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:34,332 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:34,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:39:34,334 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:39:34,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:34,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1836218433, now seen corresponding path program 1 times [2024-11-02 12:39:34,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:34,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408570963] [2024-11-02 12:39:34,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:34,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:39:35,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:35,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408570963] [2024-11-02 12:39:35,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408570963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:35,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:35,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:39:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136700334] [2024-11-02 12:39:35,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:35,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:39:35,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:35,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:39:35,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:39:35,508 INFO L87 Difference]: Start difference. First operand 876 states and 1254 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2024-11-02 12:39:37,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:39:38,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:38,620 INFO L93 Difference]: Finished difference Result 1751 states and 2507 transitions. [2024-11-02 12:39:38,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:39:38,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 15 [2024-11-02 12:39:38,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:38,630 INFO L225 Difference]: With dead ends: 1751 [2024-11-02 12:39:38,631 INFO L226 Difference]: Without dead ends: 876 [2024-11-02 12:39:38,635 INFO L431 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 [2024-11-02 12:39:38,637 INFO L432 NwaCegarLoop]: 759 mSDtfsCounter, 861 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:38,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 759 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2024-11-02 12:39:38,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2024-11-02 12:39:38,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2024-11-02 12:39:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 542 states have (on average 1.3394833948339484) internal successors, (726), 563 states have internal predecessors, (726), 266 states have call successors, (266), 68 states have call predecessors, (266), 67 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) [2024-11-02 12:39:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1252 transitions. [2024-11-02 12:39:38,727 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1252 transitions. Word has length 15 [2024-11-02 12:39:38,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:38,727 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 1252 transitions. [2024-11-02 12:39:38,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2024-11-02 12:39:38,728 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1252 transitions. [2024-11-02 12:39:38,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:39:38,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:38,729 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:38,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:39:38,730 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:39:38,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:38,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1168396044, now seen corresponding path program 1 times [2024-11-02 12:39:38,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:38,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563420802] [2024-11-02 12:39:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:38,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:39:39,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:39,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563420802] [2024-11-02 12:39:39,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563420802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:39,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:39,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:39:39,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668661901] [2024-11-02 12:39:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:39,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:39:39,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:39,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:39:39,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:39:39,886 INFO L87 Difference]: Start difference. First operand 876 states and 1252 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:39:41,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:39:43,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:43,715 INFO L93 Difference]: Finished difference Result 1946 states and 2761 transitions. [2024-11-02 12:39:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:39:43,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-02 12:39:43,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:43,725 INFO L225 Difference]: With dead ends: 1946 [2024-11-02 12:39:43,725 INFO L226 Difference]: Without dead ends: 1071 [2024-11-02 12:39:43,729 INFO L431 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 [2024-11-02 12:39:43,730 INFO L432 NwaCegarLoop]: 965 mSDtfsCounter, 413 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:43,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1569 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 238 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2024-11-02 12:39:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-11-02 12:39:43,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2024-11-02 12:39:43,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 660 states have (on average 1.3257575757575757) internal successors, (875), 686 states have internal predecessors, (875), 319 states have call successors, (319), 92 states have call predecessors, (319), 91 states have return successors, (313), 313 states have call predecessors, (313), 313 states have call successors, (313) [2024-11-02 12:39:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1507 transitions. [2024-11-02 12:39:43,800 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1507 transitions. Word has length 17 [2024-11-02 12:39:43,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:43,800 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1507 transitions. [2024-11-02 12:39:43,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:39:43,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1507 transitions. [2024-11-02 12:39:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:39:43,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:43,802 INFO L215 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] [2024-11-02 12:39:43,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:39:43,803 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:39:43,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:43,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1220893394, now seen corresponding path program 1 times [2024-11-02 12:39:43,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:43,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362582589] [2024-11-02 12:39:43,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:43,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms