./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ --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 9f2fac8642c25f1335350a2814ff7cf3c4ea0fb7f4feaed63baec564397e8f24 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:48:21,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:48:21,821 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:48:21,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:48:21,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:48:21,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:48:21,865 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:48:21,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:48:21,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:48:21,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:48:21,868 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:48:21,868 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:48:21,869 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:48:21,870 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:48:21,870 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:48:21,871 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:48:21,871 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:48:21,872 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:48:21,872 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:48:21,877 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:48:21,879 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:48:21,880 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:48:21,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:48:21,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:48:21,882 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:48:21,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:48:21,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:48:21,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:48:21,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:48:21,885 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:48:21,886 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:48:21,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:48:21,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:48:21,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:21,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:48:21,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:48:21,888 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:48:21,889 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:48:21,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:48:21,889 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:48:21,889 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:48:21,890 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:48:21,890 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_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f2fac8642c25f1335350a2814ff7cf3c4ea0fb7f4feaed63baec564397e8f24 [2023-11-19 04:48:22,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:48:22,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:48:22,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:48:22,347 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:48:22,348 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:48:22,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i [2023-11-19 04:48:25,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:48:26,260 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:48:26,262 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i [2023-11-19 04:48:26,322 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ/data/1ecd46a0e/b636cd21430a44d3ac2bcad867d68830/FLAG0d6090595 [2023-11-19 04:48:26,343 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ/data/1ecd46a0e/b636cd21430a44d3ac2bcad867d68830 [2023-11-19 04:48:26,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:48:26,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:48:26,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:26,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:48:26,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:48:26,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:26" (1/1) ... [2023-11-19 04:48:26,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d720ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:26, skipping insertion in model container [2023-11-19 04:48:26,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:26" (1/1) ... [2023-11-19 04:48:26,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:48:27,758 WARN L240 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_1ae47c94-fc84-4bae-b2c4-7939119b4af6/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i[202214,202227] [2023-11-19 04:48:28,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:28,441 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:48:28,794 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)); [6865] [2023-11-19 04:48:28,797 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": "+m" (v->counter)); [6872] [2023-11-19 04:48:28,811 WARN L240 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_1ae47c94-fc84-4bae-b2c4-7939119b4af6/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i[202214,202227] [2023-11-19 04:48:29,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:29,164 WARN L675 CHandler]: The function __VERIFIER_nondet_u8 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:48:29,172 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:48:29,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:29 WrapperNode [2023-11-19 04:48:29,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:29,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:29,174 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:48:29,174 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:48:29,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:29" (1/1) ... [2023-11-19 04:48:29,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:29" (1/1) ... [2023-11-19 04:48:29,509 INFO L138 Inliner]: procedures = 163, calls = 1241, calls flagged for inlining = 76, calls inlined = 76, statements flattened = 3223 [2023-11-19 04:48:29,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:29,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:48:29,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:48:29,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:48:29,521 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:29" (1/1) ... [2023-11-19 04:48:29,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:29" (1/1) ... [2023-11-19 04:48:29,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:29" (1/1) ... [2023-11-19 04:48:29,567 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:29" (1/1) ... [2023-11-19 04:48:29,677 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:29" (1/1) ... [2023-11-19 04:48:29,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:29" (1/1) ... [2023-11-19 04:48:29,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:29" (1/1) ... [2023-11-19 04:48:29,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:29" (1/1) ... [2023-11-19 04:48:29,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:48:29,802 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:48:29,802 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:48:29,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:48:29,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:29" (1/1) ... [2023-11-19 04:48:29,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:29,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:48:29,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:48:29,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ae47c94-fc84-4bae-b2c4-7939119b4af6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:48:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-19 04:48:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-19 04:48:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_unregister_dev [2023-11-19 04:48:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_unregister_dev [2023-11-19 04:48:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2023-11-19 04:48:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2023-11-19 04:48:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2023-11-19 04:48:29,883 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2023-11-19 04:48:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:48:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2023-11-19 04:48:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2023-11-19 04:48:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:48:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:48:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-11-19 04:48:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-11-19 04:48:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 04:48:29,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 04:48:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:48:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-19 04:48:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-19 04:48:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2023-11-19 04:48:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2023-11-19 04:48:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-11-19 04:48:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-11-19 04:48:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 04:48:29,887 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 04:48:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_disconnect [2023-11-19 04:48:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_disconnect [2023-11-19 04:48:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 04:48:29,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 04:48:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:48:29,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:48:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2023-11-19 04:48:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2023-11-19 04:48:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 04:48:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 04:48:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2023-11-19 04:48:29,891 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2023-11-19 04:48:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_submit_rx_urb [2023-11-19 04:48:29,891 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_submit_rx_urb [2023-11-19 04:48:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 04:48:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 04:48:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:48:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 04:48:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 04:48:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_rx_complete [2023-11-19 04:48:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_rx_complete [2023-11-19 04:48:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 04:48:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 04:48:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-19 04:48:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-19 04:48:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-11-19 04:48:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-11-19 04:48:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2023-11-19 04:48:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2023-11-19 04:48:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 04:48:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 04:48:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-19 04:48:29,894 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-19 04:48:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:48:29,895 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:48:29,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:48:29,896 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:48:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:48:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-11-19 04:48:29,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-11-19 04:48:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2023-11-19 04:48:29,897 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2023-11-19 04:48:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:48:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-19 04:48:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-19 04:48:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 04:48:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 04:48:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:48:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:48:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:48:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:48:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_cmd_event_complete [2023-11-19 04:48:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_cmd_event_complete [2023-11-19 04:48:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2023-11-19 04:48:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2023-11-19 04:48:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:48:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-11-19 04:48:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-11-19 04:48:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2023-11-19 04:48:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2023-11-19 04:48:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:48:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:48:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 04:48:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 04:48:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_10 [2023-11-19 04:48:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_10 [2023-11-19 04:48:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 04:48:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 04:48:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 04:48:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 04:48:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-11-19 04:48:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-11-19 04:48:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-19 04:48:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-19 04:48:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:48:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_resume [2023-11-19 04:48:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_resume [2023-11-19 04:48:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2023-11-19 04:48:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2023-11-19 04:48:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-19 04:48:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-19 04:48:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:48:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2023-11-19 04:48:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 04:48:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 04:48:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:48:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:48:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2023-11-19 04:48:29,906 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2023-11-19 04:48:30,669 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:48:30,677 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:48:31,261 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 04:48:32,416 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-11-19 04:48:36,650 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:48:37,532 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:48:37,532 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:48:37,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:37 BoogieIcfgContainer [2023-11-19 04:48:37,551 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:48:37,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:48:37,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:48:37,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:48:37,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:48:26" (1/3) ... [2023-11-19 04:48:37,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140d0554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:37, skipping insertion in model container [2023-11-19 04:48:37,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:29" (2/3) ... [2023-11-19 04:48:37,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140d0554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:37, skipping insertion in model container [2023-11-19 04:48:37,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:37" (3/3) ... [2023-11-19 04:48:37,565 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i [2023-11-19 04:48:37,590 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:48:37,591 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:48:37,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:48:37,702 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7cda4ce7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:48:37,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:48:37,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 816 states, 532 states have (on average 1.381578947368421) internal successors, (735), 558 states have internal predecessors, (735), 235 states have call successors, (235), 49 states have call predecessors, (235), 47 states have return successors, (229), 221 states have call predecessors, (229), 229 states have call successors, (229) [2023-11-19 04:48:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 04:48:37,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:48:37,734 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:48:37,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:48:37,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:48:37,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1218346175, now seen corresponding path program 1 times [2023-11-19 04:48:37,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:48:37,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341982591] [2023-11-19 04:48:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:48:37,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:48:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:48:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:48:38,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:48:38,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341982591] [2023-11-19 04:48:38,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341982591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:48:38,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:48:38,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:48:38,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183643309] [2023-11-19 04:48:38,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:48:38,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:48:38,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:48:38,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:48:38,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:48:38,673 INFO L87 Difference]: Start difference. First operand has 816 states, 532 states have (on average 1.381578947368421) internal successors, (735), 558 states have internal predecessors, (735), 235 states have call successors, (235), 49 states have call predecessors, (235), 47 states have return successors, (229), 221 states have call predecessors, (229), 229 states have call successors, (229) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:48:41,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:48:43,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:48:43,087 INFO L93 Difference]: Finished difference Result 2381 states and 3498 transitions. [2023-11-19 04:48:43,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:48:43,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2023-11-19 04:48:43,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:48:43,131 INFO L225 Difference]: With dead ends: 2381 [2023-11-19 04:48:43,132 INFO L226 Difference]: Without dead ends: 1556 [2023-11-19 04:48:43,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:48:43,157 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 1130 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:48:43,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 2127 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 238 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-11-19 04:48:43,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2023-11-19 04:48:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2023-11-19 04:48:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1024 states have (on average 1.365234375) internal successors, (1398), 1056 states have internal predecessors, (1398), 439 states have call successors, (439), 93 states have call predecessors, (439), 92 states have return successors, (434), 418 states have call predecessors, (434), 434 states have call successors, (434) [2023-11-19 04:48:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2271 transitions. [2023-11-19 04:48:43,372 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2271 transitions. Word has length 36 [2023-11-19 04:48:43,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:48:43,373 INFO L495 AbstractCegarLoop]: Abstraction has 1556 states and 2271 transitions. [2023-11-19 04:48:43,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:48:43,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2271 transitions. [2023-11-19 04:48:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 04:48:43,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:48:43,381 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:48:43,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:48:43,381 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:48:43,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:48:43,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1169727601, now seen corresponding path program 1 times [2023-11-19 04:48:43,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:48:43,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170981690] [2023-11-19 04:48:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:48:43,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:48:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:48:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 04:48:44,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:48:44,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170981690] [2023-11-19 04:48:44,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170981690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:48:44,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:48:44,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:48:44,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427199147] [2023-11-19 04:48:44,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:48:44,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:48:44,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:48:44,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:48:44,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:48:44,487 INFO L87 Difference]: Start difference. First operand 1556 states and 2271 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 04:48:46,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:48:49,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:48:51,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:48:52,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:48:52,740 INFO L93 Difference]: Finished difference Result 3031 states and 4416 transitions. [2023-11-19 04:48:52,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:48:52,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 55 [2023-11-19 04:48:52,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:48:52,768 INFO L225 Difference]: With dead ends: 3031 [2023-11-19 04:48:52,768 INFO L226 Difference]: Without dead ends: 3028 [2023-11-19 04:48:52,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:48:52,772 INFO L413 NwaCegarLoop]: 1097 mSDtfsCounter, 1085 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:48:52,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 2142 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 3 Unknown, 0 Unchecked, 8.0s Time] [2023-11-19 04:48:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2023-11-19 04:48:53,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 3016. [2023-11-19 04:48:53,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 1986 states have (on average 1.364551863041289) internal successors, (2710), 2048 states have internal predecessors, (2710), 847 states have call successors, (847), 185 states have call predecessors, (847), 182 states have return successors, (842), 806 states have call predecessors, (842), 842 states have call successors, (842) [2023-11-19 04:48:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 4399 transitions. [2023-11-19 04:48:53,077 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 4399 transitions. Word has length 55 [2023-11-19 04:48:53,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:48:53,079 INFO L495 AbstractCegarLoop]: Abstraction has 3016 states and 4399 transitions. [2023-11-19 04:48:53,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 04:48:53,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 4399 transitions. [2023-11-19 04:48:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 04:48:53,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:48:53,086 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:48:53,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:48:53,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:48:53,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:48:53,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1901352550, now seen corresponding path program 1 times [2023-11-19 04:48:53,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:48:53,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616074017] [2023-11-19 04:48:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:48:53,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:48:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:48:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 04:48:54,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:48:54,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616074017] [2023-11-19 04:48:54,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616074017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:48:54,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:48:54,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:48:54,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760654048] [2023-11-19 04:48:54,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:48:54,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:48:54,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:48:54,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:48:54,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:48:54,007 INFO L87 Difference]: Start difference. First operand 3016 states and 4399 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 04:48:56,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:48:59,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:49:01,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:49:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:02,725 INFO L93 Difference]: Finished difference Result 9025 states and 13166 transitions. [2023-11-19 04:49:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:02,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56 [2023-11-19 04:49:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:02,775 INFO L225 Difference]: With dead ends: 9025 [2023-11-19 04:49:02,776 INFO L226 Difference]: Without dead ends: 6018 [2023-11-19 04:49:02,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:02,798 INFO L413 NwaCegarLoop]: 1060 mSDtfsCounter, 1140 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:02,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2108 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2023-11-19 04:49:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6018 states. [2023-11-19 04:49:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6018 to 6005. [2023-11-19 04:49:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6005 states, 3955 states have (on average 1.3643489254108723) internal successors, (5396), 4079 states have internal predecessors, (5396), 1685 states have call successors, (1685), 369 states have call predecessors, (1685), 364 states have return successors, (1680), 1604 states have call predecessors, (1680), 1680 states have call successors, (1680) [2023-11-19 04:49:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 8761 transitions. [2023-11-19 04:49:03,415 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 8761 transitions. Word has length 56 [2023-11-19 04:49:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:03,422 INFO L495 AbstractCegarLoop]: Abstraction has 6005 states and 8761 transitions. [2023-11-19 04:49:03,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 04:49:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 8761 transitions. [2023-11-19 04:49:03,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 04:49:03,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:03,428 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:03,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:49:03,428 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:49:03,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:03,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1188072940, now seen corresponding path program 1 times [2023-11-19 04:49:03,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:03,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406578664] [2023-11-19 04:49:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:03,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 04:49:03,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:03,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406578664] [2023-11-19 04:49:03,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406578664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:03,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:03,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:49:03,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406174348] [2023-11-19 04:49:03,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:03,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:03,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:03,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:03,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:03,896 INFO L87 Difference]: Start difference. First operand 6005 states and 8761 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 04:49:06,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:49:08,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:49:10,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:49:11,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:11,989 INFO L93 Difference]: Finished difference Result 8997 states and 13191 transitions. [2023-11-19 04:49:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:11,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 57 [2023-11-19 04:49:11,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:12,072 INFO L225 Difference]: With dead ends: 8997 [2023-11-19 04:49:12,073 INFO L226 Difference]: Without dead ends: 8994 [2023-11-19 04:49:12,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:12,079 INFO L413 NwaCegarLoop]: 1061 mSDtfsCounter, 1134 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:12,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 2124 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 3 Unknown, 0 Unchecked, 7.4s Time] [2023-11-19 04:49:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8994 states. [2023-11-19 04:49:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8994 to 8983. [2023-11-19 04:49:12,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8983 states, 5917 states have (on average 1.364711847219875) internal successors, (8075), 6107 states have internal predecessors, (8075), 2519 states have call successors, (2519), 553 states have call predecessors, (2519), 546 states have return successors, (2584), 2394 states have call predecessors, (2584), 2514 states have call successors, (2584) [2023-11-19 04:49:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8983 states to 8983 states and 13178 transitions. [2023-11-19 04:49:12,978 INFO L78 Accepts]: Start accepts. Automaton has 8983 states and 13178 transitions. Word has length 57 [2023-11-19 04:49:12,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:12,978 INFO L495 AbstractCegarLoop]: Abstraction has 8983 states and 13178 transitions. [2023-11-19 04:49:12,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 04:49:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 8983 states and 13178 transitions. [2023-11-19 04:49:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 04:49:12,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:12,983 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:12,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:49:12,984 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:49:12,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:12,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1823989545, now seen corresponding path program 1 times [2023-11-19 04:49:12,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:12,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718056559] [2023-11-19 04:49:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:12,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 04:49:13,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:13,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718056559] [2023-11-19 04:49:13,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718056559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:13,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:13,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:49:13,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882137824] [2023-11-19 04:49:13,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:13,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:13,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:13,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:13,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:13,347 INFO L87 Difference]: Start difference. First operand 8983 states and 13178 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 04:49:15,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []