./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh --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 f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:28:17,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:28:17,107 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 15:28:17,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:28:17,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:28:17,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:28:17,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:28:17,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:28:17,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:28:17,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:28:17,141 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:28:17,142 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:28:17,142 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:28:17,143 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:28:17,143 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:28:17,144 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:28:17,144 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:28:17,145 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:28:17,145 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:28:17,146 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:28:17,146 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:28:17,150 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:28:17,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:28:17,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:28:17,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:28:17,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:28:17,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:28:17,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:28:17,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:28:17,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:28:17,153 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:28:17,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:28:17,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:28:17,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:28:17,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:28:17,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:28:17,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:28:17,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:28:17,155 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:28:17,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:28:17,156 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:28:17,156 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:28:17,156 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:28:17,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:28:17,157 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_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef [2023-12-02 15:28:17,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:28:17,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:28:17,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:28:17,401 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:28:17,401 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:28:17,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2023-12-02 15:28:20,257 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:28:20,726 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:28:20,726 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2023-12-02 15:28:20,767 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/data/8ba380310/cd7fb116e10d433882090258cfcb93ed/FLAGd87210b85 [2023-12-02 15:28:20,782 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/data/8ba380310/cd7fb116e10d433882090258cfcb93ed [2023-12-02 15:28:20,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:28:20,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:28:20,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:28:20,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:28:20,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:28:20,795 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:28:20" (1/1) ... [2023-12-02 15:28:20,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c45528f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:20, skipping insertion in model container [2023-12-02 15:28:20,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:28:20" (1/1) ... [2023-12-02 15:28:20,961 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:28:23,225 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_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2023-12-02 15:28:23,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:28:23,306 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:28:23,396 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsrl %1,%0": "=r" (r): "rm" (x), "0" (-1)); [3507] [2023-12-02 15:28:23,402 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [3635] [2023-12-02 15:28:23,403 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [3642] [2023-12-02 15:28:23,484 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [4961] [2023-12-02 15:28:23,582 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6300] [2023-12-02 15:28:23,751 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [9460] [2023-12-02 15:28:23,783 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_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2023-12-02 15:28:23,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:28:23,899 WARN L675 CHandler]: The function ldv_calloc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:28:23,907 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:28:23,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:23 WrapperNode [2023-12-02 15:28:23,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:28:23,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:28:23,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:28:23,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:28:23,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:23" (1/1) ... [2023-12-02 15:28:24,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:23" (1/1) ... [2023-12-02 15:28:24,182 INFO L138 Inliner]: procedures = 274, calls = 6062, calls flagged for inlining = 107, calls inlined = 80, statements flattened = 7111 [2023-12-02 15:28:24,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:28:24,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:28:24,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:28:24,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:28:24,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:23" (1/1) ... [2023-12-02 15:28:24,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:23" (1/1) ... [2023-12-02 15:28:24,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:23" (1/1) ... [2023-12-02 15:28:24,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:23" (1/1) ... [2023-12-02 15:28:24,409 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:23" (1/1) ... [2023-12-02 15:28:24,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:23" (1/1) ... [2023-12-02 15:28:24,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:23" (1/1) ... [2023-12-02 15:28:24,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:23" (1/1) ... [2023-12-02 15:28:24,531 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:28:24,531 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:28:24,532 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:28:24,532 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:28:24,532 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:23" (1/1) ... [2023-12-02 15:28:24,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:28:24,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:28:24,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:28:24,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:28:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue_status_stage [2023-12-02 15:28:24,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue_status_stage [2023-12-02 15:28:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue [2023-12-02 15:28:24,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue [2023-12-02 15:28:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure ep_bd_list_free [2023-12-02 15:28:24,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_bd_list_free [2023-12-02 15:28:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 15:28:24,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 15:28:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure init_ep [2023-12-02 15:28:24,603 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ep [2023-12-02 15:28:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 15:28:24,603 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 15:28:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-12-02 15:28:24,604 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-12-02 15:28:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-12-02 15:28:24,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-12-02 15:28:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_reset [2023-12-02 15:28:24,604 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_reset [2023-12-02 15:28:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 15:28:24,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 15:28:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-12-02 15:28:24,605 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-12-02 15:28:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_disable [2023-12-02 15:28:24,605 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_disable [2023-12-02 15:28:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure usb_del_gadget_udc [2023-12-02 15:28:24,605 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_del_gadget_udc [2023-12-02 15:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 15:28:24,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 15:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 15:28:24,606 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 15:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_type [2023-12-02 15:28:24,606 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_type [2023-12-02 15:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:28:24,607 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2023-12-02 15:28:24,607 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2023-12-02 15:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_req_complete [2023-12-02 15:28:24,607 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_req_complete [2023-12-02 15:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_free_request [2023-12-02 15:28:24,607 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_free_request [2023-12-02 15:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure bd_add_to_bdi [2023-12-02 15:28:24,608 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_add_to_bdi [2023-12-02 15:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_remove [2023-12-02 15:28:24,608 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_remove [2023-12-02 15:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2023-12-02 15:28:24,608 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2023-12-02 15:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 15:28:24,608 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 15:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_stop [2023-12-02 15:28:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_stop [2023-12-02 15:28:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:28:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-12-02 15:28:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-12-02 15:28:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 15:28:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 15:28:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_isoc [2023-12-02 15:28:24,610 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_isoc [2023-12-02 15:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 15:28:24,610 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 15:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 15:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_free_ep [2023-12-02 15:28:24,610 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_free_ep [2023-12-02 15:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 15:28:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 15:28:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_notify_xfr [2023-12-02 15:28:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_notify_xfr [2023-12-02 15:28:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 15:28:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 15:28:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 15:28:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 15:28:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop_ep [2023-12-02 15:28:24,612 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop_ep [2023-12-02 15:28:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 15:28:24,612 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 15:28:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_set_stall [2023-12-02 15:28:24,612 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_set_stall [2023-12-02 15:28:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 15:28:24,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 15:28:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_map_request [2023-12-02 15:28:24,613 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_map_request [2023-12-02 15:28:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_free [2023-12-02 15:28:24,613 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_free [2023-12-02 15:28:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_dbg_bd_list [2023-12-02 15:28:24,613 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_dbg_bd_list [2023-12-02 15:28:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure ep_set_halt [2023-12-02 15:28:24,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_set_halt [2023-12-02 15:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 15:28:24,614 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 15:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_tbi [2023-12-02 15:28:24,614 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_tbi [2023-12-02 15:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2023-12-02 15:28:24,614 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2023-12-02 15:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_init [2023-12-02 15:28:24,614 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_init [2023-12-02 15:28:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_config_ep [2023-12-02 15:28:24,615 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_config_ep [2023-12-02 15:28:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_enable [2023-12-02 15:28:24,615 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_enable [2023-12-02 15:28:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_queue_xfr [2023-12-02 15:28:24,615 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_queue_xfr [2023-12-02 15:28:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_hw_exit [2023-12-02 15:28:24,615 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_hw_exit [2023-12-02 15:28:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-12-02 15:28:24,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-12-02 15:28:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 15:28:24,616 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 15:28:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_disable [2023-12-02 15:28:24,616 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_disable [2023-12-02 15:28:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-12-02 15:28:24,617 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-12-02 15:28:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:28:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-12-02 15:28:24,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-12-02 15:28:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-12-02 15:28:24,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-12-02 15:28:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 15:28:24,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 15:28:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 15:28:24,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 15:28:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:28:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2023-12-02 15:28:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 15:28:24,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 15:28:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2023-12-02 15:28:24,618 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2023-12-02 15:28:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:28:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_dequeue [2023-12-02 15:28:24,619 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_dequeue [2023-12-02 15:28:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_state [2023-12-02 15:28:24,619 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_state [2023-12-02 15:28:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 15:28:24,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 15:28:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:28:24,620 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_start [2023-12-02 15:28:24,620 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_start [2023-12-02 15:28:24,620 INFO L130 BoogieDeclarations]: Found specification of procedure poll_oip [2023-12-02 15:28:24,620 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_oip [2023-12-02 15:28:24,620 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2023-12-02 15:28:24,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2023-12-02 15:28:24,620 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop [2023-12-02 15:28:24,621 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop [2023-12-02 15:28:24,621 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_softconn [2023-12-02 15:28:24,621 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_softconn [2023-12-02 15:28:24,621 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_run [2023-12-02 15:28:24,621 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_run [2023-12-02 15:28:24,621 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2023-12-02 15:28:24,621 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2023-12-02 15:28:24,621 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_submit_cmd [2023-12-02 15:28:24,622 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_submit_cmd [2023-12-02 15:28:24,622 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_wakeup [2023-12-02 15:28:24,622 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_wakeup [2023-12-02 15:28:24,622 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 15:28:24,622 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 15:28:24,622 INFO L130 BoogieDeclarations]: Found specification of procedure find_end_bdi [2023-12-02 15:28:24,622 INFO L138 BoogieDeclarations]: Found implementation of procedure find_end_bdi [2023-12-02 15:28:24,623 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_bd [2023-12-02 15:28:24,623 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_bd [2023-12-02 15:28:24,623 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-12-02 15:28:24,623 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-12-02 15:28:24,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:28:24,623 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_writel [2023-12-02 15:28:24,623 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_writel [2023-12-02 15:28:24,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:28:24,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:28:24,624 INFO L130 BoogieDeclarations]: Found specification of procedure chain_table [2023-12-02 15:28:24,624 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_table [2023-12-02 15:28:24,624 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_readl [2023-12-02 15:28:24,624 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_readl [2023-12-02 15:28:24,624 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_enable [2023-12-02 15:28:24,624 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_enable [2023-12-02 15:28:24,624 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 15:28:24,625 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 15:28:24,625 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_probe [2023-12-02 15:28:24,625 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_probe [2023-12-02 15:28:25,265 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:28:25,269 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:28:26,836 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 15:28:35,845 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:28:37,523 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:28:37,524 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 15:28:37,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:28:37 BoogieIcfgContainer [2023-12-02 15:28:37,526 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:28:37,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:28:37,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:28:37,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:28:37,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:28:20" (1/3) ... [2023-12-02 15:28:37,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ab090c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:28:37, skipping insertion in model container [2023-12-02 15:28:37,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:23" (2/3) ... [2023-12-02 15:28:37,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ab090c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:28:37, skipping insertion in model container [2023-12-02 15:28:37,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:28:37" (3/3) ... [2023-12-02 15:28:37,536 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2023-12-02 15:28:37,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:28:37,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:28:37,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:28:37,657 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;@31899829, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:28:37,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:28:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 1551 states, 975 states have (on average 1.3015384615384615) internal successors, (1269), 994 states have internal predecessors, (1269), 493 states have call successors, (493), 82 states have call predecessors, (493), 81 states have return successors, (488), 488 states have call predecessors, (488), 488 states have call successors, (488) [2023-12-02 15:28:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 15:28:37,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:28:37,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:28:37,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:28:37,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:28:37,700 INFO L85 PathProgramCache]: Analyzing trace with hash -197272024, now seen corresponding path program 1 times [2023-12-02 15:28:37,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:28:37,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057075027] [2023-12-02 15:28:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:37,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:28:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:28:38,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:28:38,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057075027] [2023-12-02 15:28:38,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057075027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:28:38,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:28:38,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:28:38,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81002980] [2023-12-02 15:28:38,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:28:38,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:28:38,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:28:38,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:28:38,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:28:38,727 INFO L87 Difference]: Start difference. First operand has 1551 states, 975 states have (on average 1.3015384615384615) internal successors, (1269), 994 states have internal predecessors, (1269), 493 states have call successors, (493), 82 states have call predecessors, (493), 81 states have return successors, (488), 488 states have call predecessors, (488), 488 states have call successors, (488) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:28:41,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:28:41,971 INFO L93 Difference]: Finished difference Result 4209 states and 6121 transitions. [2023-12-02 15:28:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:28:41,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2023-12-02 15:28:41,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:28:42,012 INFO L225 Difference]: With dead ends: 4209 [2023-12-02 15:28:42,012 INFO L226 Difference]: Without dead ends: 2644 [2023-12-02 15:28:42,026 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 [2023-12-02 15:28:42,030 INFO L413 NwaCegarLoop]: 2264 mSDtfsCounter, 1582 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 4312 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:28:42,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 4312 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-02 15:28:42,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2023-12-02 15:28:42,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2640. [2023-12-02 15:28:42,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 1655 states have (on average 1.2858006042296073) internal successors, (2128), 1678 states have internal predecessors, (2128), 840 states have call successors, (840), 145 states have call predecessors, (840), 144 states have return successors, (839), 838 states have call predecessors, (839), 839 states have call successors, (839) [2023-12-02 15:28:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 3807 transitions. [2023-12-02 15:28:42,338 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 3807 transitions. Word has length 59 [2023-12-02 15:28:42,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:28:42,339 INFO L495 AbstractCegarLoop]: Abstraction has 2640 states and 3807 transitions. [2023-12-02 15:28:42,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:28:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 3807 transitions. [2023-12-02 15:28:42,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-02 15:28:42,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:28:42,356 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:28:42,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:28:42,357 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:28:42,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:28:42,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1383821725, now seen corresponding path program 1 times [2023-12-02 15:28:42,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:28:42,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443144297] [2023-12-02 15:28:42,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:42,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:28:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-12-02 15:28:43,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:28:43,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443144297] [2023-12-02 15:28:43,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443144297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:28:43,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:28:43,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:28:43,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016200938] [2023-12-02 15:28:43,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:28:43,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:28:43,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:28:43,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:28:43,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:28:43,897 INFO L87 Difference]: Start difference. First operand 2640 states and 3807 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 15:28:48,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:28:49,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:28:49,622 INFO L93 Difference]: Finished difference Result 4754 states and 6872 transitions. [2023-12-02 15:28:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:28:49,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2023-12-02 15:28:49,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:28:49,657 INFO L225 Difference]: With dead ends: 4754 [2023-12-02 15:28:49,657 INFO L226 Difference]: Without dead ends: 4751 [2023-12-02 15:28:49,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:28:49,662 INFO L413 NwaCegarLoop]: 2416 mSDtfsCounter, 1624 mSDsluCounter, 4441 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 6857 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:28:49,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1624 Valid, 6857 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-02 15:28:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4751 states. [2023-12-02 15:28:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4751 to 4716. [2023-12-02 15:28:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4716 states, 2967 states have (on average 1.2888439501179643) internal successors, (3824), 3016 states have internal predecessors, (3824), 1489 states have call successors, (1489), 264 states have call predecessors, (1489), 259 states have return successors, (1501), 1473 states have call predecessors, (1501), 1488 states have call successors, (1501) [2023-12-02 15:28:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4716 states to 4716 states and 6814 transitions. [2023-12-02 15:28:49,988 INFO L78 Accepts]: Start accepts. Automaton has 4716 states and 6814 transitions. Word has length 117 [2023-12-02 15:28:49,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:28:49,989 INFO L495 AbstractCegarLoop]: Abstraction has 4716 states and 6814 transitions. [2023-12-02 15:28:49,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 15:28:49,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4716 states and 6814 transitions. [2023-12-02 15:28:50,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-02 15:28:50,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:28:50,002 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:28:50,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:28:50,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:28:50,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:28:50,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1625043925, now seen corresponding path program 1 times [2023-12-02 15:28:50,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:28:50,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681246595] [2023-12-02 15:28:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:50,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:28:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-02 15:28:53,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:28:53,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681246595] [2023-12-02 15:28:53,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681246595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:28:53,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:28:53,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 15:28:53,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847772688] [2023-12-02 15:28:53,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:28:53,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 15:28:53,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:28:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 15:28:53,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-02 15:28:53,942 INFO L87 Difference]: Start difference. First operand 4716 states and 6814 transitions. Second operand has 12 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 5 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-02 15:29:05,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:29:07,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:29:09,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:29:11,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:29:13,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:29:15,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:29:17,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:29:19,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:29:21,252 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 [] [2023-12-02 15:29:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:29:53,200 INFO L93 Difference]: Finished difference Result 9575 states and 13892 transitions. [2023-12-02 15:29:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 15:29:53,201 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 5 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) Word has length 150 [2023-12-02 15:29:53,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:29:53,237 INFO L225 Difference]: With dead ends: 9575 [2023-12-02 15:29:53,237 INFO L226 Difference]: Without dead ends: 4860 [2023-12-02 15:29:53,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-12-02 15:29:53,261 INFO L413 NwaCegarLoop]: 1975 mSDtfsCounter, 145 mSDsluCounter, 13882 mSDsCounter, 0 mSdLazyCounter, 8302 mSolverCounterSat, 487 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 15857 SdHoareTripleChecker+Invalid, 8798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 8302 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:29:53,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 15857 Invalid, 8798 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [487 Valid, 8302 Invalid, 9 Unknown, 0 Unchecked, 58.8s Time] [2023-12-02 15:29:53,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2023-12-02 15:29:53,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 4768. [2023-12-02 15:29:53,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 3003 states have (on average 1.2913752913752914) internal successors, (3878), 3058 states have internal predecessors, (3878), 1495 states have call successors, (1495), 266 states have call predecessors, (1495), 269 states have return successors, (1538), 1481 states have call predecessors, (1538), 1494 states have call successors, (1538) [2023-12-02 15:29:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 6911 transitions. [2023-12-02 15:29:53,587 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 6911 transitions. Word has length 150 [2023-12-02 15:29:53,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:29:53,588 INFO L495 AbstractCegarLoop]: Abstraction has 4768 states and 6911 transitions. [2023-12-02 15:29:53,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 5 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-02 15:29:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 6911 transitions. [2023-12-02 15:29:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-02 15:29:53,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:29:53,601 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:29:53,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:29:53,602 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:29:53,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:29:53,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1472137368, now seen corresponding path program 1 times [2023-12-02 15:29:53,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:29:53,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377030] [2023-12-02 15:29:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:29:53,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:29:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:29:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-02 15:29:59,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:29:59,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377030] [2023-12-02 15:29:59,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377030] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:29:59,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230255911] [2023-12-02 15:29:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:29:59,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:29:59,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:29:59,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:29:59,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:30:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:30:00,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 7430 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 15:30:00,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:30:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-12-02 15:30:00,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:30:00,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230255911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:30:00,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:30:00,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [20] total 24 [2023-12-02 15:30:00,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513105370] [2023-12-02 15:30:00,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:30:00,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:30:00,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:30:00,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:30:00,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2023-12-02 15:30:00,695 INFO L87 Difference]: Start difference. First operand 4768 states and 6911 transitions. Second operand has 6 states, 4 states have (on average 16.25) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-02 15:30:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:30:08,164 INFO L93 Difference]: Finished difference Result 9511 states and 13802 transitions. [2023-12-02 15:30:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:30:08,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 16.25) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 151 [2023-12-02 15:30:08,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:30:08,191 INFO L225 Difference]: With dead ends: 9511 [2023-12-02 15:30:08,192 INFO L226 Difference]: Without dead ends: 4736 [2023-12-02 15:30:08,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2023-12-02 15:30:08,218 INFO L413 NwaCegarLoop]: 2048 mSDtfsCounter, 3 mSDsluCounter, 8174 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10222 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:30:08,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 10222 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-02 15:30:08,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2023-12-02 15:30:08,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 4734. [2023-12-02 15:30:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4734 states, 2976 states have (on average 1.2893145161290323) internal successors, (3837), 3034 states have internal predecessors, (3837), 1489 states have call successors, (1489), 264 states have call predecessors, (1489), 268 states have return successors, (1515), 1473 states have call predecessors, (1515), 1488 states have call successors, (1515) [2023-12-02 15:30:08,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4734 states to 4734 states and 6841 transitions. [2023-12-02 15:30:08,545 INFO L78 Accepts]: Start accepts. Automaton has 4734 states and 6841 transitions. Word has length 151 [2023-12-02 15:30:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:30:08,546 INFO L495 AbstractCegarLoop]: Abstraction has 4734 states and 6841 transitions. [2023-12-02 15:30:08,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 16.25) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-02 15:30:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand 4734 states and 6841 transitions. [2023-12-02 15:30:08,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-02 15:30:08,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:30:08,559 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:30:08,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:30:08,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:30:08,760 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:30:08,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:30:08,761 INFO L85 PathProgramCache]: Analyzing trace with hash 341755040, now seen corresponding path program 2 times [2023-12-02 15:30:08,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:30:08,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314020024] [2023-12-02 15:30:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:30:08,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:30:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:30:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 27 proven. 6 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-02 15:30:14,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:30:14,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314020024] [2023-12-02 15:30:14,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314020024] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:30:14,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200484776] [2023-12-02 15:30:14,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:30:14,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:30:14,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:30:14,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:30:14,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d4ba2e-e3f6-43d1-b359-e145bba2ee49/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:30:16,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 15:30:16,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:30:16,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 7009 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 15:30:16,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:30:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-02 15:30:16,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:30:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-02 15:30:17,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200484776] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:30:17,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1879280417] [2023-12-02 15:30:17,042 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2023-12-02 15:30:17,042 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:30:17,046 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:30:17,050 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:30:17,051 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs