./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91 --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 1ef83f89a2480bb974b27f067785c3859d21a1e764735321272ad8be1e6dccbd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:51:51,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:51:51,467 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:51:51,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:51:51,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:51:51,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:51:51,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:51:51,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:51:51,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:51:51,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:51:51,502 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:51:51,503 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:51:51,503 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:51:51,504 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:51:51,504 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:51:51,505 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:51:51,505 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:51:51,506 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:51:51,506 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:51:51,507 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:51:51,507 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:51:51,508 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:51:51,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:51:51,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:51:51,509 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:51:51,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:51:51,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:51:51,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:51:51,511 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:51:51,511 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:51:51,512 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:51:51,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:51:51,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:51:51,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:51:51,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:51,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:51:51,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:51:51,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:51:51,514 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:51:51,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:51:51,514 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:51:51,515 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:51:51,515 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:51:51,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:51:51,515 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_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ef83f89a2480bb974b27f067785c3859d21a1e764735321272ad8be1e6dccbd [2023-11-24 23:51:51,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:51:51,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:51:51,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:51:51,832 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:51:51,833 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:51:51,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i [2023-11-24 23:51:54,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:51:55,544 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:51:55,544 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i [2023-11-24 23:51:55,592 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/data/8379b6420/0104b398491745c88dba55ebf216c351/FLAGf645aaec6 [2023-11-24 23:51:55,611 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/data/8379b6420/0104b398491745c88dba55ebf216c351 [2023-11-24 23:51:55,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:51:55,622 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:51:55,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:55,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:51:55,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:51:55,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:55" (1/1) ... [2023-11-24 23:51:55,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60d0c01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:55, skipping insertion in model container [2023-11-24 23:51:55,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:55" (1/1) ... [2023-11-24 23:51:55,752 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:51:57,110 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_cb494a4f-543c-4208-a826-a12976da8cda/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i[133672,133685] [2023-11-24 23:51:57,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:57,214 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:51:57,315 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; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3073] [2023-11-24 23:51:57,318 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [3087-3088] [2023-11-24 23:51:57,319 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3102] [2023-11-24 23:51:57,319 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3105] [2023-11-24 23:51:57,320 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3108] [2023-11-24 23:51:57,320 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3111] [2023-11-24 23:51:57,326 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& kernel_stack)); [3173] [2023-11-24 23:51:57,326 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [3176] [2023-11-24 23:51:57,327 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [3179] [2023-11-24 23:51:57,328 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [3182] [2023-11-24 23:51:57,567 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_cb494a4f-543c-4208-a826-a12976da8cda/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i[133672,133685] [2023-11-24 23:51:57,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:57,661 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:57,669 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:51:57,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:57 WrapperNode [2023-11-24 23:51:57,670 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:57,671 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:57,671 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:51:57,672 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:51:57,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:57" (1/1) ... [2023-11-24 23:51:57,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:57" (1/1) ... [2023-11-24 23:51:57,918 INFO L138 Inliner]: procedures = 191, calls = 833, calls flagged for inlining = 89, calls inlined = 75, statements flattened = 2266 [2023-11-24 23:51:57,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:57,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:51:57,919 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:51:57,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:51:57,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:57" (1/1) ... [2023-11-24 23:51:57,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:57" (1/1) ... [2023-11-24 23:51:57,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:57" (1/1) ... [2023-11-24 23:51:57,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:57" (1/1) ... [2023-11-24 23:51:58,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:57" (1/1) ... [2023-11-24 23:51:58,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:57" (1/1) ... [2023-11-24 23:51:58,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:57" (1/1) ... [2023-11-24 23:51:58,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:57" (1/1) ... [2023-11-24 23:51:58,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:51:58,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:51:58,135 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:51:58,135 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:51:58,136 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:57" (1/1) ... [2023-11-24 23:51:58,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:58,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:58,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:51:58,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:51:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:51:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure input_event_size [2023-11-24 23:51:58,211 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event_size [2023-11-24 23:51:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:51:58,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:51:58,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:51:58,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_uinput_device [2023-11-24 23:51:58,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_uinput_device [2023-11-24 23:51:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-24 23:51:58,214 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-24 23:51:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-11-24 23:51:58,214 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-11-24 23:51:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-24 23:51:58,215 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-24 23:51:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure uinput_request_done [2023-11-24 23:51:58,216 INFO L138 BoogieDeclarations]: Found implementation of procedure uinput_request_done [2023-11-24 23:51:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 23:51:58,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 23:51:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-24 23:51:58,218 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-24 23:51:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-24 23:51:58,219 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-24 23:51:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure input_abs_get_flat [2023-11-24 23:51:58,219 INFO L138 BoogieDeclarations]: Found implementation of procedure input_abs_get_flat [2023-11-24 23:51:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:51:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-24 23:51:58,220 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-24 23:51:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-24 23:51:58,221 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-24 23:51:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-24 23:51:58,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-24 23:51:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure input_alloc_absinfo [2023-11-24 23:51:58,221 INFO L138 BoogieDeclarations]: Found implementation of procedure input_alloc_absinfo [2023-11-24 23:51:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-24 23:51:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-24 23:51:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-24 23:51:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-24 23:51:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure uinput_request_find [2023-11-24 23:51:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure uinput_request_find [2023-11-24 23:51:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_uinput_device [2023-11-24 23:51:58,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_uinput_device [2023-11-24 23:51:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:51:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure uinput_allocate_device [2023-11-24 23:51:58,223 INFO L138 BoogieDeclarations]: Found implementation of procedure uinput_allocate_device [2023-11-24 23:51:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-24 23:51:58,223 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-24 23:51:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:51:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure uinput_ioctl_handler [2023-11-24 23:51:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure uinput_ioctl_handler [2023-11-24 23:51:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:51:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:51:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-24 23:51:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure uinput_ff_upload_from_user [2023-11-24 23:51:58,226 INFO L138 BoogieDeclarations]: Found implementation of procedure uinput_ff_upload_from_user [2023-11-24 23:51:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure uinput_destroy_device [2023-11-24 23:51:58,226 INFO L138 BoogieDeclarations]: Found implementation of procedure uinput_destroy_device [2023-11-24 23:51:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:51:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure input_abs_get_max [2023-11-24 23:51:58,228 INFO L138 BoogieDeclarations]: Found implementation of procedure input_abs_get_max [2023-11-24 23:51:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-24 23:51:58,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-24 23:51:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-24 23:51:58,229 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-24 23:51:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-24 23:51:58,229 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-24 23:51:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2023-11-24 23:51:58,230 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2023-11-24 23:51:58,230 INFO L130 BoogieDeclarations]: Found specification of procedure input_abs_get_min [2023-11-24 23:51:58,230 INFO L138 BoogieDeclarations]: Found implementation of procedure input_abs_get_min [2023-11-24 23:51:58,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:51:58,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:51:58,230 INFO L130 BoogieDeclarations]: Found specification of procedure is_compat_task [2023-11-24 23:51:58,231 INFO L138 BoogieDeclarations]: Found implementation of procedure is_compat_task [2023-11-24 23:51:58,231 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-24 23:51:58,231 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-24 23:51:58,232 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-24 23:51:58,232 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-24 23:51:58,232 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-24 23:51:58,232 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-24 23:51:58,232 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-24 23:51:58,232 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-24 23:51:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-24 23:51:58,233 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-24 23:51:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-24 23:51:58,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-24 23:51:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-24 23:51:58,233 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-24 23:51:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-24 23:51:58,234 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-24 23:51:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:51:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-24 23:51:58,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-24 23:51:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-24 23:51:58,235 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-24 23:51:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:51:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-24 23:51:58,235 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-24 23:51:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-24 23:51:58,235 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-24 23:51:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:51:58,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:51:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-24 23:51:58,237 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-24 23:51:58,750 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:51:58,753 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:52:05,576 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:52:06,273 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:52:06,273 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:52:06,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:52:06 BoogieIcfgContainer [2023-11-24 23:52:06,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:52:06,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:52:06,279 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:52:06,282 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:52:06,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:51:55" (1/3) ... [2023-11-24 23:52:06,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d0bc96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:52:06, skipping insertion in model container [2023-11-24 23:52:06,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:57" (2/3) ... [2023-11-24 23:52:06,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d0bc96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:52:06, skipping insertion in model container [2023-11-24 23:52:06,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:52:06" (3/3) ... [2023-11-24 23:52:06,286 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i [2023-11-24 23:52:06,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:52:06,312 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:52:06,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:52:06,396 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;@24a56e75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:52:06,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:52:06,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 343 states have (on average 1.3848396501457727) internal successors, (475), 355 states have internal predecessors, (475), 140 states have call successors, (140), 43 states have call predecessors, (140), 43 states have return successors, (140), 138 states have call predecessors, (140), 140 states have call successors, (140) [2023-11-24 23:52:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:52:06,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:06,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:06,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:52:06,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash 723327241, now seen corresponding path program 1 times [2023-11-24 23:52:06,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:06,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956558150] [2023-11-24 23:52:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:06,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:06,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:06,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956558150] [2023-11-24 23:52:06,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956558150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:06,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:06,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:52:06,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170802807] [2023-11-24 23:52:06,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:06,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:06,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:06,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:06,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:06,915 INFO L87 Difference]: Start difference. First operand has 528 states, 343 states have (on average 1.3848396501457727) internal successors, (475), 355 states have internal predecessors, (475), 140 states have call successors, (140), 43 states have call predecessors, (140), 43 states have return successors, (140), 138 states have call predecessors, (140), 140 states have call successors, (140) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:52:07,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:07,451 INFO L93 Difference]: Finished difference Result 1050 states and 1510 transitions. [2023-11-24 23:52:07,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:07,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-24 23:52:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:07,471 INFO L225 Difference]: With dead ends: 1050 [2023-11-24 23:52:07,472 INFO L226 Difference]: Without dead ends: 524 [2023-11-24 23:52:07,483 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 [2023-11-24 23:52:07,486 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 742 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:07,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 656 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:52:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-11-24 23:52:07,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2023-11-24 23:52:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 342 states have (on average 1.3771929824561404) internal successors, (471), 351 states have internal predecessors, (471), 139 states have call successors, (139), 43 states have call predecessors, (139), 42 states have return successors, (135), 133 states have call predecessors, (135), 135 states have call successors, (135) [2023-11-24 23:52:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 745 transitions. [2023-11-24 23:52:07,597 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 745 transitions. Word has length 10 [2023-11-24 23:52:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:07,598 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 745 transitions. [2023-11-24 23:52:07,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:52:07,599 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 745 transitions. [2023-11-24 23:52:07,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:52:07,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:07,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:07,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:52:07,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:52:07,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:07,601 INFO L85 PathProgramCache]: Analyzing trace with hash 947988661, now seen corresponding path program 1 times [2023-11-24 23:52:07,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:07,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360626849] [2023-11-24 23:52:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:07,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:07,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:07,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360626849] [2023-11-24 23:52:07,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360626849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:07,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:07,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:52:07,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410650986] [2023-11-24 23:52:07,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:07,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:07,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:07,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:07,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:07,777 INFO L87 Difference]: Start difference. First operand 524 states and 745 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:52:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:08,193 INFO L93 Difference]: Finished difference Result 526 states and 746 transitions. [2023-11-24 23:52:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:08,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-24 23:52:08,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:08,201 INFO L225 Difference]: With dead ends: 526 [2023-11-24 23:52:08,202 INFO L226 Difference]: Without dead ends: 523 [2023-11-24 23:52:08,203 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 [2023-11-24 23:52:08,205 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 737 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:08,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 653 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:52:08,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-11-24 23:52:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2023-11-24 23:52:08,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 342 states have (on average 1.3742690058479532) internal successors, (470), 350 states have internal predecessors, (470), 138 states have call successors, (138), 43 states have call predecessors, (138), 42 states have return successors, (135), 133 states have call predecessors, (135), 135 states have call successors, (135) [2023-11-24 23:52:08,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 743 transitions. [2023-11-24 23:52:08,302 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 743 transitions. Word has length 11 [2023-11-24 23:52:08,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:08,303 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 743 transitions. [2023-11-24 23:52:08,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:52:08,303 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 743 transitions. [2023-11-24 23:52:08,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:52:08,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:08,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:08,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:52:08,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:52:08,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:08,306 INFO L85 PathProgramCache]: Analyzing trace with hash -677437044, now seen corresponding path program 1 times [2023-11-24 23:52:08,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:08,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634998585] [2023-11-24 23:52:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:08,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:08,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634998585] [2023-11-24 23:52:08,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634998585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:08,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:08,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:52:08,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707241342] [2023-11-24 23:52:08,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:08,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:08,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:08,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:08,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:08,456 INFO L87 Difference]: Start difference. First operand 523 states and 743 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:52:09,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:09,184 INFO L93 Difference]: Finished difference Result 665 states and 931 transitions. [2023-11-24 23:52:09,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:09,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-24 23:52:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:09,193 INFO L225 Difference]: With dead ends: 665 [2023-11-24 23:52:09,193 INFO L226 Difference]: Without dead ends: 655 [2023-11-24 23:52:09,198 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 [2023-11-24 23:52:09,202 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 230 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:09,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 1258 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:52:09,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-11-24 23:52:09,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2023-11-24 23:52:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 422 states have (on average 1.3507109004739337) internal successors, (570), 433 states have internal predecessors, (570), 172 states have call successors, (172), 62 states have call predecessors, (172), 60 states have return successors, (173), 164 states have call predecessors, (173), 169 states have call successors, (173) [2023-11-24 23:52:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 915 transitions. [2023-11-24 23:52:09,289 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 915 transitions. Word has length 12 [2023-11-24 23:52:09,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:09,289 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 915 transitions. [2023-11-24 23:52:09,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:52:09,289 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 915 transitions. [2023-11-24 23:52:09,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:52:09,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:09,299 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 23:52:09,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:52:09,299 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:52:09,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:09,301 INFO L85 PathProgramCache]: Analyzing trace with hash -12721978, now seen corresponding path program 1 times [2023-11-24 23:52:09,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:09,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495890310] [2023-11-24 23:52:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:09,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:52:09,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:09,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495890310] [2023-11-24 23:52:09,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495890310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:09,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:09,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:52:09,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58168853] [2023-11-24 23:52:09,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:09,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:09,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:09,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:09,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:09,484 INFO L87 Difference]: Start difference. First operand 655 states and 915 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 23:52:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:10,213 INFO L93 Difference]: Finished difference Result 1359 states and 1916 transitions. [2023-11-24 23:52:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:10,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2023-11-24 23:52:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:10,223 INFO L225 Difference]: With dead ends: 1359 [2023-11-24 23:52:10,223 INFO L226 Difference]: Without dead ends: 708 [2023-11-24 23:52:10,227 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 [2023-11-24 23:52:10,243 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 35 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:10,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1275 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:52:10,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2023-11-24 23:52:10,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 701. [2023-11-24 23:52:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 458 states have (on average 1.3558951965065502) internal successors, (621), 469 states have internal predecessors, (621), 182 states have call successors, (182), 62 states have call predecessors, (182), 60 states have return successors, (187), 174 states have call predecessors, (187), 179 states have call successors, (187) [2023-11-24 23:52:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 990 transitions. [2023-11-24 23:52:10,370 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 990 transitions. Word has length 35 [2023-11-24 23:52:10,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:10,370 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 990 transitions. [2023-11-24 23:52:10,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 23:52:10,371 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 990 transitions. [2023-11-24 23:52:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-24 23:52:10,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:10,377 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 23:52:10,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:52:10,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:52:10,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:10,378 INFO L85 PathProgramCache]: Analyzing trace with hash -55459870, now seen corresponding path program 1 times [2023-11-24 23:52:10,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:10,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007579601] [2023-11-24 23:52:10,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:10,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:52:10,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:10,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007579601] [2023-11-24 23:52:10,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007579601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:10,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:10,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:52:10,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520950027] [2023-11-24 23:52:10,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:10,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:52:10,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:10,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:52:10,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:52:10,880 INFO L87 Difference]: Start difference. First operand 701 states and 990 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:52:12,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:12,501 INFO L93 Difference]: Finished difference Result 762 states and 1051 transitions. [2023-11-24 23:52:12,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:52:12,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2023-11-24 23:52:12,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:12,512 INFO L225 Difference]: With dead ends: 762 [2023-11-24 23:52:12,512 INFO L226 Difference]: Without dead ends: 759 [2023-11-24 23:52:12,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:52:12,514 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 1100 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:12,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 1672 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 23:52:12,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2023-11-24 23:52:12,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2023-11-24 23:52:12,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 491 states have (on average 1.3421588594704685) internal successors, (659), 502 states have internal predecessors, (659), 192 states have call successors, (192), 78 states have call predecessors, (192), 75 states have return successors, (197), 184 states have call predecessors, (197), 189 states have call successors, (197) [2023-11-24 23:52:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1048 transitions. [2023-11-24 23:52:12,611 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1048 transitions. Word has length 44 [2023-11-24 23:52:12,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:12,612 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1048 transitions. [2023-11-24 23:52:12,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:52:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1048 transitions. [2023-11-24 23:52:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-24 23:52:12,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:12,618 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-24 23:52:12,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:52:12,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:52:12,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash -807706905, now seen corresponding path program 1 times [2023-11-24 23:52:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:12,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361923092] [2023-11-24 23:52:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:12,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:52:13,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361923092] [2023-11-24 23:52:13,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361923092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:13,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:13,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:52:13,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636847783] [2023-11-24 23:52:13,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:13,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:52:13,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:13,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:52:13,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:52:13,152 INFO L87 Difference]: Start difference. First operand 759 states and 1048 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:16,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:16,562 INFO L93 Difference]: Finished difference Result 920 states and 1272 transitions. [2023-11-24 23:52:16,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:52:16,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2023-11-24 23:52:16,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:16,570 INFO L225 Difference]: With dead ends: 920 [2023-11-24 23:52:16,570 INFO L226 Difference]: Without dead ends: 910 [2023-11-24 23:52:16,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:52:16,573 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 450 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:16,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 1891 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-24 23:52:16,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-11-24 23:52:16,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 885. [2023-11-24 23:52:16,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 574 states have (on average 1.3414634146341464) internal successors, (770), 586 states have internal predecessors, (770), 221 states have call successors, (221), 92 states have call predecessors, (221), 89 states have return successors, (226), 213 states have call predecessors, (226), 218 states have call successors, (226) [2023-11-24 23:52:16,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1217 transitions. [2023-11-24 23:52:16,655 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1217 transitions. Word has length 47 [2023-11-24 23:52:16,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:16,657 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1217 transitions. [2023-11-24 23:52:16,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:16,658 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1217 transitions. [2023-11-24 23:52:16,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-24 23:52:16,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:16,662 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-24 23:52:16,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:52:16,663 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:52:16,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:16,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1015642699, now seen corresponding path program 1 times [2023-11-24 23:52:16,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:16,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470027388] [2023-11-24 23:52:16,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:16,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:52:16,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:16,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470027388] [2023-11-24 23:52:16,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470027388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:16,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:16,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:52:16,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544812316] [2023-11-24 23:52:16,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:16,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:52:16,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:16,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:52:16,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:52:16,813 INFO L87 Difference]: Start difference. First operand 885 states and 1217 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:52:17,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:17,729 INFO L93 Difference]: Finished difference Result 1782 states and 2450 transitions. [2023-11-24 23:52:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:52:17,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 57 [2023-11-24 23:52:17,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:17,740 INFO L225 Difference]: With dead ends: 1782 [2023-11-24 23:52:17,740 INFO L226 Difference]: Without dead ends: 895 [2023-11-24 23:52:17,746 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 [2023-11-24 23:52:17,747 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 13 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:17,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1962 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:52:17,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2023-11-24 23:52:17,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 888. [2023-11-24 23:52:17,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 576 states have (on average 1.3368055555555556) internal successors, (770), 588 states have internal predecessors, (770), 222 states have call successors, (222), 92 states have call predecessors, (222), 89 states have return successors, (227), 214 states have call predecessors, (227), 219 states have call successors, (227) [2023-11-24 23:52:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1219 transitions. [2023-11-24 23:52:17,848 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1219 transitions. Word has length 57 [2023-11-24 23:52:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:17,848 INFO L495 AbstractCegarLoop]: Abstraction has 888 states and 1219 transitions. [2023-11-24 23:52:17,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:52:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1219 transitions. [2023-11-24 23:52:17,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-24 23:52:17,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:17,854 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 23:52:17,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 23:52:17,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:52:17,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:17,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2095603278, now seen corresponding path program 1 times [2023-11-24 23:52:17,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:17,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102591713] [2023-11-24 23:52:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:17,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 23:52:18,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:18,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102591713] [2023-11-24 23:52:18,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102591713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:18,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:18,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:52:18,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551255678] [2023-11-24 23:52:18,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:18,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:52:18,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:18,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:52:18,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:52:18,308 INFO L87 Difference]: Start difference. First operand 888 states and 1219 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-24 23:52:19,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:19,328 INFO L93 Difference]: Finished difference Result 912 states and 1245 transitions. [2023-11-24 23:52:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:52:19,329 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 65 [2023-11-24 23:52:19,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:19,338 INFO L225 Difference]: With dead ends: 912 [2023-11-24 23:52:19,338 INFO L226 Difference]: Without dead ends: 909 [2023-11-24 23:52:19,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:52:19,341 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 62 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:19,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2537 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:52:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2023-11-24 23:52:19,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 904. [2023-11-24 23:52:19,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 586 states have (on average 1.3344709897610922) internal successors, (782), 598 states have internal predecessors, (782), 225 states have call successors, (225), 95 states have call predecessors, (225), 92 states have return successors, (230), 217 states have call predecessors, (230), 222 states have call successors, (230) [2023-11-24 23:52:19,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1237 transitions. [2023-11-24 23:52:19,425 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1237 transitions. Word has length 65 [2023-11-24 23:52:19,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:19,426 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1237 transitions. [2023-11-24 23:52:19,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-24 23:52:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1237 transitions. [2023-11-24 23:52:19,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-24 23:52:19,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:19,430 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 23:52:19,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 23:52:19,431 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:52:19,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:19,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1895160954, now seen corresponding path program 1 times [2023-11-24 23:52:19,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:19,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668791107] [2023-11-24 23:52:19,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:19,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:52:19,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:19,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668791107] [2023-11-24 23:52:19,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668791107] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:19,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173967702] [2023-11-24 23:52:19,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:19,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:19,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:19,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:19,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb494a4f-543c-4208-a826-a12976da8cda/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:52:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:20,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:52:20,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:52:20,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:52:20,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173967702] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:20,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [426904878] [2023-11-24 23:52:20,491 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2023-11-24 23:52:20,492 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:20,495 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:20,501 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:20,502 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs