./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--pf.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_16ab39ea-fd1d-4933-b471-e47c6722ffed/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab39ea-fd1d-4933-b471-e47c6722ffed/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_16ab39ea-fd1d-4933-b471-e47c6722ffed/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab39ea-fd1d-4933-b471-e47c6722ffed/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab39ea-fd1d-4933-b471-e47c6722ffed/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_16ab39ea-fd1d-4933-b471-e47c6722ffed/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 65cc93bea37c503291576929a444106bffa9d5b7b84b8d294ee7e7120b60ffa5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:25:09,288 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:25:09,418 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab39ea-fd1d-4933-b471-e47c6722ffed/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 12:25:09,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:25:09,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:25:09,495 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:25:09,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:25:09,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:25:09,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:25:09,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:25:09,503 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:25:09,517 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:25:09,517 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:25:09,517 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:25:09,518 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:25:09,518 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:25:09,519 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:25:09,519 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:25:09,519 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:25:09,523 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:25:09,524 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:25:09,524 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:25:09,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:25:09,527 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:25:09,528 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:25:09,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:25:09,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:25:09,532 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:25:09,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:25:09,533 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:25:09,534 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:25:09,534 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:25:09,534 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:25:09,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:25:09,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:25:09,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:25:09,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:25:09,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:25:09,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:25:09,539 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:25:09,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:25:09,539 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:25:09,540 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:25:09,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:25:09,541 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_16ab39ea-fd1d-4933-b471-e47c6722ffed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab39ea-fd1d-4933-b471-e47c6722ffed/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65cc93bea37c503291576929a444106bffa9d5b7b84b8d294ee7e7120b60ffa5 [2024-11-02 12:25:09,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:25:09,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:25:09,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:25:09,935 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:25:09,936 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:25:09,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab39ea-fd1d-4933-b471-e47c6722ffed/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i Unable to find full path for "g++" [2024-11-02 12:25:12,229 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:25:12,813 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:25:12,814 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab39ea-fd1d-4933-b471-e47c6722ffed/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2024-11-02 12:25:12,866 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab39ea-fd1d-4933-b471-e47c6722ffed/bin/utaipan-verify-DbMuA5NWw2/data/6559c1958/ad5a8a772368409da1a1c1a749b44e19/FLAG3c997c637 [2024-11-02 12:25:12,894 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab39ea-fd1d-4933-b471-e47c6722ffed/bin/utaipan-verify-DbMuA5NWw2/data/6559c1958/ad5a8a772368409da1a1c1a749b44e19 [2024-11-02 12:25:12,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:25:12,901 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:25:12,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:25:12,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:25:12,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:25:12,914 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:25:12" (1/1) ... [2024-11-02 12:25:12,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b531f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:12, skipping insertion in model container [2024-11-02 12:25:12,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:25:12" (1/1) ... [2024-11-02 12:25:13,117 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:25:14,511 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_16ab39ea-fd1d-4933-b471-e47c6722ffed/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i[138616,138629] [2024-11-02 12:25:14,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:25:14,692 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:25:15,054 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_16ab39ea-fd1d-4933-b471-e47c6722ffed/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i[138616,138629] [2024-11-02 12:25:15,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:25:15,199 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:25:15,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:15 WrapperNode [2024-11-02 12:25:15,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:25:15,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:25:15,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:25:15,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:25:15,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:15" (1/1) ... [2024-11-02 12:25:15,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:15" (1/1) ... [2024-11-02 12:25:15,438 INFO L138 Inliner]: procedures = 161, calls = 1531, calls flagged for inlining = 53, calls inlined = 28, statements flattened = 1863 [2024-11-02 12:25:15,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:25:15,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:25:15,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:25:15,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:25:15,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:15" (1/1) ... [2024-11-02 12:25:15,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:15" (1/1) ... [2024-11-02 12:25:15,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:15" (1/1) ... [2024-11-02 12:25:15,471 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:15" (1/1) ... [2024-11-02 12:25:15,570 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:15" (1/1) ... [2024-11-02 12:25:15,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:15" (1/1) ... [2024-11-02 12:25:15,616 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:15" (1/1) ... [2024-11-02 12:25:15,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:15" (1/1) ... [2024-11-02 12:25:15,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:25:15,655 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:25:15,655 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:25:15,655 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:25:15,656 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:15" (1/1) ... [2024-11-02 12:25:15,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:25:15,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab39ea-fd1d-4933-b471-e47c6722ffed/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:25:15,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab39ea-fd1d-4933-b471-e47c6722ffed/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:25:15,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab39ea-fd1d-4933-b471-e47c6722ffed/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:25:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2024-11-02 12:25:15,742 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2024-11-02 12:25:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure pf_getgeo [2024-11-02 12:25:15,742 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_getgeo [2024-11-02 12:25:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2024-11-02 12:25:15,743 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2024-11-02 12:25:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2024-11-02 12:25:15,745 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2024-11-02 12:25:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2024-11-02 12:25:15,745 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2024-11-02 12:25:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 12:25:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pf_mutex [2024-11-02 12:25:15,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pf_mutex [2024-11-02 12:25:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure pf_reset [2024-11-02 12:25:15,746 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_reset [2024-11-02 12:25:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 12:25:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:25:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2024-11-02 12:25:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2024-11-02 12:25:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure pf_wait [2024-11-02 12:25:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_wait [2024-11-02 12:25:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2024-11-02 12:25:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2024-11-02 12:25:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-02 12:25:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-02 12:25:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pf_mutex [2024-11-02 12:25:15,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pf_mutex [2024-11-02 12:25:15,750 INFO L130 BoogieDeclarations]: Found specification of procedure pf_check_events [2024-11-02 12:25:15,751 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_check_events [2024-11-02 12:25:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2024-11-02 12:25:15,751 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2024-11-02 12:25:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:25:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-02 12:25:15,752 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-02 12:25:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-02 12:25:15,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-02 12:25:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2024-11-02 12:25:15,754 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2024-11-02 12:25:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure pf_req_sense [2024-11-02 12:25:15,754 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_req_sense [2024-11-02 12:25:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure pf_completion [2024-11-02 12:25:15,754 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_completion [2024-11-02 12:25:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:25:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2024-11-02 12:25:15,756 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2024-11-02 12:25:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:25:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2024-11-02 12:25:15,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2024-11-02 12:25:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:25:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:25:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure pf_atapi [2024-11-02 12:25:15,757 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_atapi [2024-11-02 12:25:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure pf_command [2024-11-02 12:25:15,758 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_command [2024-11-02 12:25:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure pf_probe [2024-11-02 12:25:15,758 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_probe [2024-11-02 12:25:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:25:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure pf_identify [2024-11-02 12:25:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_identify [2024-11-02 12:25:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure pf_sleep [2024-11-02 12:25:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_sleep [2024-11-02 12:25:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure pf_mode_sense [2024-11-02 12:25:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_mode_sense [2024-11-02 12:25:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2024-11-02 12:25:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2024-11-02 12:25:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:25:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:25:15,761 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2024-11-02 12:25:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2024-11-02 12:25:15,761 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2024-11-02 12:25:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2024-11-02 12:25:15,761 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-02 12:25:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-02 12:25:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2024-11-02 12:25:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2024-11-02 12:25:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2024-11-02 12:25:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2024-11-02 12:25:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure get_capacity [2024-11-02 12:25:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure get_capacity [2024-11-02 12:25:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure pf_lock [2024-11-02 12:25:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_lock [2024-11-02 12:25:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:25:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure xl [2024-11-02 12:25:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure xl [2024-11-02 12:25:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:25:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:25:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2024-11-02 12:25:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2024-11-02 12:25:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure pf_ioctl [2024-11-02 12:25:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_ioctl [2024-11-02 12:25:16,271 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:25:16,275 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:25:23,456 INFO L? ?]: Removed 415 outVars from TransFormulas that were not future-live. [2024-11-02 12:25:23,456 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:25:24,086 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:25:24,088 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-02 12:25:24,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:25:24 BoogieIcfgContainer [2024-11-02 12:25:24,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:25:24,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:25:24,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:25:24,097 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:25:24,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:25:12" (1/3) ... [2024-11-02 12:25:24,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f20c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:25:24, skipping insertion in model container [2024-11-02 12:25:24,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:15" (2/3) ... [2024-11-02 12:25:24,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f20c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:25:24, skipping insertion in model container [2024-11-02 12:25:24,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:25:24" (3/3) ... [2024-11-02 12:25:24,103 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2024-11-02 12:25:24,126 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:25:24,126 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:25:24,233 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:25:24,242 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;@30f69da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:25:24,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:25:24,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 447 states, 281 states have (on average 1.3629893238434163) internal successors, (383), 295 states have internal predecessors, (383), 128 states have call successors, (128), 38 states have call predecessors, (128), 38 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2024-11-02 12:25:24,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-02 12:25:24,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:25:24,261 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:25:24,262 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:25:24,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:25:24,266 INFO L85 PathProgramCache]: Analyzing trace with hash -180418818, now seen corresponding path program 1 times [2024-11-02 12:25:24,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:25:24,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721115660] [2024-11-02 12:25:24,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:25:24,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:25:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:25:26,698 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 12:25:26,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:25:26,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721115660] [2024-11-02 12:25:26,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721115660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:25:26,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:25:26,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:25:26,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643586140] [2024-11-02 12:25:26,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:25:26,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:25:26,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:25:26,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:25:26,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:25:26,742 INFO L87 Difference]: Start difference. First operand has 447 states, 281 states have (on average 1.3629893238434163) internal successors, (383), 295 states have internal predecessors, (383), 128 states have call successors, (128), 38 states have call predecessors, (128), 38 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:25:28,849 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 12:25:30,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:25:30,959 INFO L93 Difference]: Finished difference Result 1234 states and 1801 transitions. [2024-11-02 12:25:30,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:25:30,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-02 12:25:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:25:30,982 INFO L225 Difference]: With dead ends: 1234 [2024-11-02 12:25:30,982 INFO L226 Difference]: Without dead ends: 784 [2024-11-02 12:25:30,991 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 12:25:30,997 INFO L432 NwaCegarLoop]: 790 mSDtfsCounter, 481 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:25:30,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1311 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2024-11-02 12:25:31,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-02 12:25:31,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 771. [2024-11-02 12:25:31,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 485 states have (on average 1.3422680412371133) internal successors, (651), 498 states have internal predecessors, (651), 219 states have call successors, (219), 67 states have call predecessors, (219), 66 states have return successors, (213), 213 states have call predecessors, (213), 213 states have call successors, (213) [2024-11-02 12:25:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1083 transitions. [2024-11-02 12:25:31,163 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1083 transitions. Word has length 14 [2024-11-02 12:25:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:25:31,165 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 1083 transitions. [2024-11-02 12:25:31,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:25:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1083 transitions. [2024-11-02 12:25:31,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:25:31,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:25:31,167 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:25:31,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:25:31,167 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:25:31,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:25:31,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2008226223, now seen corresponding path program 1 times [2024-11-02 12:25:31,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:25:31,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492383989] [2024-11-02 12:25:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:25:31,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:25:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:25:33,072 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 12:25:33,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:25:33,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492383989] [2024-11-02 12:25:33,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492383989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:25:33,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:25:33,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:25:33,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461017248] [2024-11-02 12:25:33,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:25:33,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:25:33,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:25:33,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:25:33,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:25:33,076 INFO L87 Difference]: Start difference. First operand 771 states and 1083 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 12:25:35,142 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 12:25:35,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:25:35,826 INFO L93 Difference]: Finished difference Result 1541 states and 2165 transitions. [2024-11-02 12:25:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:25:35,828 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 12:25:35,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:25:35,839 INFO L225 Difference]: With dead ends: 1541 [2024-11-02 12:25:35,839 INFO L226 Difference]: Without dead ends: 771 [2024-11-02 12:25:35,844 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 12:25:35,845 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 608 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:25:35,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 543 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2024-11-02 12:25:35,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2024-11-02 12:25:35,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2024-11-02 12:25:35,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 485 states have (on average 1.3381443298969071) internal successors, (649), 498 states have internal predecessors, (649), 219 states have call successors, (219), 67 states have call predecessors, (219), 66 states have return successors, (213), 213 states have call predecessors, (213), 213 states have call successors, (213) [2024-11-02 12:25:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1081 transitions. [2024-11-02 12:25:35,931 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1081 transitions. Word has length 15 [2024-11-02 12:25:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:25:35,932 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 1081 transitions. [2024-11-02 12:25:35,932 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 12:25:35,933 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1081 transitions. [2024-11-02 12:25:35,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-02 12:25:35,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:25:35,934 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:25:35,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:25:35,934 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:25:35,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:25:35,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1188100248, now seen corresponding path program 1 times [2024-11-02 12:25:35,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:25:35,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928375530] [2024-11-02 12:25:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:25:35,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:25:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:25:37,822 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 12:25:37,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:25:37,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928375530] [2024-11-02 12:25:37,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928375530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:25:37,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:25:37,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:25:37,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074847666] [2024-11-02 12:25:37,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:25:37,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:25:37,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:25:37,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:25:37,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:25:37,827 INFO L87 Difference]: Start difference. First operand 771 states and 1081 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 12:25:39,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:25:41,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:25:41,209 INFO L93 Difference]: Finished difference Result 1747 states and 2428 transitions. [2024-11-02 12:25:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:25:41,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16 [2024-11-02 12:25:41,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:25:41,221 INFO L225 Difference]: With dead ends: 1747 [2024-11-02 12:25:41,221 INFO L226 Difference]: Without dead ends: 977 [2024-11-02 12:25:41,226 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 12:25:41,229 INFO L432 NwaCegarLoop]: 759 mSDtfsCounter, 445 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:25:41,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1129 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2024-11-02 12:25:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-02 12:25:41,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 647. [2024-11-02 12:25:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 402 states have (on average 1.3258706467661692) internal successors, (533), 414 states have internal predecessors, (533), 183 states have call successors, (183), 62 states have call predecessors, (183), 61 states have return successors, (177), 177 states have call predecessors, (177), 177 states have call successors, (177) [2024-11-02 12:25:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 893 transitions. [2024-11-02 12:25:41,302 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 893 transitions. Word has length 16 [2024-11-02 12:25:41,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:25:41,303 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 893 transitions. [2024-11-02 12:25:41,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 12:25:41,304 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 893 transitions. [2024-11-02 12:25:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:25:41,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:25:41,306 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, 1] [2024-11-02 12:25:41,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:25:41,307 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:25:41,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:25:41,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1580644614, now seen corresponding path program 1 times [2024-11-02 12:25:41,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:25:41,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523581576] [2024-11-02 12:25:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:25:41,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms