./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire --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 7f108eec0e6f75d7c7724c96156fb3bec5ecbcd0f2a8def1b3ebffa34d9deb6c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:26:51,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:26:51,502 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:26:51,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:26:51,509 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:26:51,534 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:26:51,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:26:51,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:26:51,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:26:51,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:26:51,538 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:26:51,539 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:26:51,540 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:26:51,541 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:26:51,541 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:26:51,542 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:26:51,543 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:26:51,544 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:26:51,545 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:26:51,545 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:26:51,546 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:26:51,547 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:26:51,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:26:51,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:26:51,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:26:51,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:26:51,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:26:51,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:26:51,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:26:51,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:26:51,554 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:26:51,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:26:51,555 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:26:51,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:26:51,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:26:51,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:26:51,558 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:26:51,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:26:51,560 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:26:51,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:26:51,561 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:26:51,562 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:26:51,563 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:26:51,563 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:26:51,564 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_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f108eec0e6f75d7c7724c96156fb3bec5ecbcd0f2a8def1b3ebffa34d9deb6c [2023-11-23 21:26:51,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:26:51,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:26:51,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:26:51,917 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:26:51,917 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:26:51,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2023-11-23 21:26:55,206 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:26:55,821 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:26:55,822 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2023-11-23 21:26:55,870 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/data/3f28766c5/2febce4427b0405cab98fe323bed3fc6/FLAGe938d6a36 [2023-11-23 21:26:55,895 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/data/3f28766c5/2febce4427b0405cab98fe323bed3fc6 [2023-11-23 21:26:55,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:26:55,904 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:26:55,908 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:26:55,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:26:55,914 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:26:55,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:26:55" (1/1) ... [2023-11-23 21:26:55,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@278e6e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:55, skipping insertion in model container [2023-11-23 21:26:55,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:26:55" (1/1) ... [2023-11-23 21:26:56,115 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:26:57,121 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_459d7ef2-bdba-4ca4-9057-538431d0f7c5/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2023-11-23 21:26:57,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:26:57,887 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:26:57,980 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3691] [2023-11-23 21:26:57,995 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3805] [2023-11-23 21:26:57,996 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [3812] [2023-11-23 21:26:57,997 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; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [3829-3830] [2023-11-23 21:26:57,997 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; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3833-3834] [2023-11-23 21:26:57,998 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; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3837-3838] [2023-11-23 21:26:57,998 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; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3841-3842] [2023-11-23 21:26:58,018 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_459d7ef2-bdba-4ca4-9057-538431d0f7c5/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2023-11-23 21:26:58,212 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [5887] [2023-11-23 21:26:58,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:26:58,467 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,467 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,476 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:26:58,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58 WrapperNode [2023-11-23 21:26:58,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:26:58,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:26:58,479 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:26:58,479 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:26:58,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:58,589 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:58,793 INFO L138 Inliner]: procedures = 222, calls = 1643, calls flagged for inlining = 101, calls inlined = 96, statements flattened = 4396 [2023-11-23 21:26:58,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:26:58,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:26:58,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:26:58,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:26:58,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:58,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:58,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:58,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,135 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:26:59,168 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:26:59,168 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:26:59,168 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:26:59,170 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:26:59,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:26:59,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:26:59,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:26:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-11-23 21:26:59,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-11-23 21:26:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_18 [2023-11-23 21:26:59,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_18 [2023-11-23 21:26:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:26:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:26:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:26:59,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:26:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2023-11-23 21:26:59,260 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2023-11-23 21:26:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-11-23 21:26:59,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-11-23 21:26:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_handle_firmware_update [2023-11-23 21:26:59,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_handle_firmware_update [2023-11-23 21:26:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-11-23 21:26:59,262 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-11-23 21:26:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:26:59,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:26:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-11-23 21:26:59,264 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-11-23 21:26:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2023-11-23 21:26:59,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2023-11-23 21:26:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2023-11-23 21:26:59,265 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2023-11-23 21:26:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_get_info [2023-11-23 21:26:59,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_get_info [2023-11-23 21:26:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-11-23 21:26:59,266 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-11-23 21:26:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:26:59,268 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:26:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:26:59,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:26:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:26:59,268 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:26:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:26:59,269 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:26:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-11-23 21:26:59,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-11-23 21:26:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:26:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-23 21:26:59,269 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-23 21:26:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:26:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure ihex_next_binrec [2023-11-23 21:26:59,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ihex_next_binrec [2023-11-23 21:26:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-11-23 21:26:59,270 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-11-23 21:26:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_buffers_free [2023-11-23 21:26:59,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_buffers_free [2023-11-23 21:26:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:26:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2023-11-23 21:26:59,271 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2023-11-23 21:26:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-23 21:26:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2023-11-23 21:26:59,273 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2023-11-23 21:26:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_attribute_show [2023-11-23 21:26:59,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_attribute_show [2023-11-23 21:26:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2023-11-23 21:26:59,274 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2023-11-23 21:26:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:26:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:26:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:26:59,275 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:26:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 21:26:59,275 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 21:26:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 21:26:59,276 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 21:26:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-23 21:26:59,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-23 21:26:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 21:26:59,276 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 21:26:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure __ims_pcu_execute_command [2023-11-23 21:26:59,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __ims_pcu_execute_command [2023-11-23 21:26:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2023-11-23 21:26:59,277 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2023-11-23 21:26:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure __ims_pcu_execute_bl_command [2023-11-23 21:26:59,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __ims_pcu_execute_bl_command [2023-11-23 21:26:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-23 21:26:59,278 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-23 21:26:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:26:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 21:26:59,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 21:26:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-23 21:26:59,279 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-23 21:26:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:26:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:26:59,280 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:26:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2023-11-23 21:26:59,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2023-11-23 21:26:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2023-11-23 21:26:59,280 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2023-11-23 21:26:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:26:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-23 21:26:59,281 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-23 21:26:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-11-23 21:26:59,281 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-11-23 21:26:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_destroy_backlight [2023-11-23 21:26:59,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_destroy_backlight [2023-11-23 21:26:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_attribute_store [2023-11-23 21:26:59,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_attribute_store [2023-11-23 21:26:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:26:59,282 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:26:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 21:26:59,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 21:26:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_resume [2023-11-23 21:26:59,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_resume [2023-11-23 21:26:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 21:26:59,284 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 21:26:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_destroy_buttons [2023-11-23 21:26:59,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_destroy_buttons [2023-11-23 21:26:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:26:59,285 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:26:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_start_io [2023-11-23 21:26:59,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_start_io [2023-11-23 21:26:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2023-11-23 21:26:59,285 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2023-11-23 21:26:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:26:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2023-11-23 21:26:59,286 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2023-11-23 21:26:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:26:59,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:26:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2023-11-23 21:26:59,287 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2023-11-23 21:26:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_send_cmd_chunk [2023-11-23 21:26:59,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_send_cmd_chunk [2023-11-23 21:26:59,288 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoint [2023-11-23 21:26:59,288 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoint [2023-11-23 21:26:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:26:59,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:26:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:26:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_2 [2023-11-23 21:26:59,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_2 [2023-11-23 21:26:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2023-11-23 21:26:59,289 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2023-11-23 21:26:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_line_setup [2023-11-23 21:26:59,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_line_setup [2023-11-23 21:26:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2023-11-23 21:26:59,291 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2023-11-23 21:26:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:26:59,294 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_stop_io [2023-11-23 21:26:59,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_stop_io [2023-11-23 21:26:59,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:26:59,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:26:59,298 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_byte_needs_escape [2023-11-23 21:26:59,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_byte_needs_escape [2023-11-23 21:26:59,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:26:59,299 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-23 21:26:59,299 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-23 21:26:59,305 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:26:59,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:26:59,305 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2023-11-23 21:26:59,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2023-11-23 21:26:59,305 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-11-23 21:26:59,305 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-11-23 21:26:59,306 INFO L130 BoogieDeclarations]: Found specification of procedure scnprintf [2023-11-23 21:26:59,306 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprintf [2023-11-23 21:26:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-23 21:26:59,307 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-23 21:26:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure ihex_validate_fw [2023-11-23 21:26:59,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ihex_validate_fw [2023-11-23 21:26:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_irq [2023-11-23 21:26:59,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_irq [2023-11-23 21:26:59,308 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-23 21:26:59,308 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-23 21:26:59,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-11-23 21:26:59,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-11-23 21:26:59,308 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-23 21:26:59,308 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-23 21:26:59,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:26:59,309 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_disconnect [2023-11-23 21:26:59,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_disconnect [2023-11-23 21:26:59,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:26:59,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:26:59,986 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:26:59,991 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:27:00,163 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:27:01,812 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-11-23 21:27:03,576 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:27:04,551 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:27:04,551 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-23 21:27:04,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:04 BoogieIcfgContainer [2023-11-23 21:27:04,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:27:04,556 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:27:04,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:27:04,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:27:04,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:26:55" (1/3) ... [2023-11-23 21:27:04,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2ada65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:04, skipping insertion in model container [2023-11-23 21:27:04,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (2/3) ... [2023-11-23 21:27:04,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2ada65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:04, skipping insertion in model container [2023-11-23 21:27:04,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:04" (3/3) ... [2023-11-23 21:27:04,566 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2023-11-23 21:27:04,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:27:04,587 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:27:04,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:27:04,692 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;@6573b727, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:27:04,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:27:04,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 1130 states, 707 states have (on average 1.3465346534653466) internal successors, (952), 739 states have internal predecessors, (952), 346 states have call successors, (346), 77 states have call predecessors, (346), 75 states have return successors, (331), 330 states have call predecessors, (331), 331 states have call successors, (331) [2023-11-23 21:27:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-23 21:27:04,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:04,741 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:04,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:04,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:04,747 INFO L85 PathProgramCache]: Analyzing trace with hash 6230701, now seen corresponding path program 1 times [2023-11-23 21:27:04,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:04,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992311393] [2023-11-23 21:27:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:04,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-23 21:27:06,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:06,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992311393] [2023-11-23 21:27:06,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992311393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:06,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:06,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:06,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504398165] [2023-11-23 21:27:06,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:06,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:06,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:06,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:06,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:06,059 INFO L87 Difference]: Start difference. First operand has 1130 states, 707 states have (on average 1.3465346534653466) internal successors, (952), 739 states have internal predecessors, (952), 346 states have call successors, (346), 77 states have call predecessors, (346), 75 states have return successors, (331), 330 states have call predecessors, (331), 331 states have call successors, (331) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-23 21:27:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:07,331 INFO L93 Difference]: Finished difference Result 3244 states and 4670 transitions. [2023-11-23 21:27:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:07,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 168 [2023-11-23 21:27:07,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:07,368 INFO L225 Difference]: With dead ends: 3244 [2023-11-23 21:27:07,368 INFO L226 Difference]: Without dead ends: 2129 [2023-11-23 21:27:07,380 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 [2023-11-23 21:27:07,383 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 1475 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 2970 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:07,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 2970 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:27:07,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2023-11-23 21:27:07,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 2129. [2023-11-23 21:27:07,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 1361 states have (on average 1.3291697281410728) internal successors, (1809), 1387 states have internal predecessors, (1809), 619 states have call successors, (619), 149 states have call predecessors, (619), 148 states have return successors, (614), 612 states have call predecessors, (614), 614 states have call successors, (614) [2023-11-23 21:27:07,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3042 transitions. [2023-11-23 21:27:07,757 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3042 transitions. Word has length 168 [2023-11-23 21:27:07,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:07,760 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 3042 transitions. [2023-11-23 21:27:07,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-23 21:27:07,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3042 transitions. [2023-11-23 21:27:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-23 21:27:07,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:07,775 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:07,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:27:07,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:07,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:07,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1813259005, now seen corresponding path program 1 times [2023-11-23 21:27:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:07,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280714096] [2023-11-23 21:27:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:07,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-23 21:27:08,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:08,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280714096] [2023-11-23 21:27:08,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280714096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:08,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:08,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:08,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075546707] [2023-11-23 21:27:08,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:08,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:08,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:08,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:08,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:08,725 INFO L87 Difference]: Start difference. First operand 2129 states and 3042 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-23 21:27:09,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:09,808 INFO L93 Difference]: Finished difference Result 4139 states and 5907 transitions. [2023-11-23 21:27:09,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:09,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2023-11-23 21:27:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:09,844 INFO L225 Difference]: With dead ends: 4139 [2023-11-23 21:27:09,844 INFO L226 Difference]: Without dead ends: 4136 [2023-11-23 21:27:09,848 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 [2023-11-23 21:27:09,849 INFO L413 NwaCegarLoop]: 1488 mSDtfsCounter, 1462 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:09,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 2862 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 21:27:09,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2023-11-23 21:27:10,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 4124. [2023-11-23 21:27:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4124 states, 2647 states have (on average 1.3339629769550434) internal successors, (3531), 2697 states have internal predecessors, (3531), 1182 states have call successors, (1182), 297 states have call predecessors, (1182), 294 states have return successors, (1177), 1169 states have call predecessors, (1177), 1177 states have call successors, (1177) [2023-11-23 21:27:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4124 states to 4124 states and 5890 transitions. [2023-11-23 21:27:10,197 INFO L78 Accepts]: Start accepts. Automaton has 4124 states and 5890 transitions. Word has length 177 [2023-11-23 21:27:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:10,199 INFO L495 AbstractCegarLoop]: Abstraction has 4124 states and 5890 transitions. [2023-11-23 21:27:10,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-23 21:27:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 4124 states and 5890 transitions. [2023-11-23 21:27:10,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 21:27:10,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:10,207 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:10,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:27:10,207 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:10,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:10,217 INFO L85 PathProgramCache]: Analyzing trace with hash 375773542, now seen corresponding path program 1 times [2023-11-23 21:27:10,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:10,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126798957] [2023-11-23 21:27:10,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:10,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-23 21:27:11,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:11,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126798957] [2023-11-23 21:27:11,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126798957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:11,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:11,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:11,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891335541] [2023-11-23 21:27:11,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:11,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:11,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:11,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:11,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:11,052 INFO L87 Difference]: Start difference. First operand 4124 states and 5890 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-23 21:27:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:11,857 INFO L93 Difference]: Finished difference Result 4126 states and 5891 transitions. [2023-11-23 21:27:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:11,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 178 [2023-11-23 21:27:11,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:11,905 INFO L225 Difference]: With dead ends: 4126 [2023-11-23 21:27:11,906 INFO L226 Difference]: Without dead ends: 4123 [2023-11-23 21:27:11,913 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 [2023-11-23 21:27:11,918 INFO L413 NwaCegarLoop]: 1451 mSDtfsCounter, 1515 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:11,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1451 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:27:11,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2023-11-23 21:27:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 4123. [2023-11-23 21:27:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4123 states, 2647 states have (on average 1.3335851907820173) internal successors, (3530), 2696 states have internal predecessors, (3530), 1181 states have call successors, (1181), 297 states have call predecessors, (1181), 294 states have return successors, (1177), 1169 states have call predecessors, (1177), 1177 states have call successors, (1177) [2023-11-23 21:27:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4123 states to 4123 states and 5888 transitions. [2023-11-23 21:27:12,397 INFO L78 Accepts]: Start accepts. Automaton has 4123 states and 5888 transitions. Word has length 178 [2023-11-23 21:27:12,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:12,399 INFO L495 AbstractCegarLoop]: Abstraction has 4123 states and 5888 transitions. [2023-11-23 21:27:12,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-23 21:27:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 4123 states and 5888 transitions. [2023-11-23 21:27:12,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-23 21:27:12,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:12,404 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:12,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:27:12,404 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:12,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1236597984, now seen corresponding path program 1 times [2023-11-23 21:27:12,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:12,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997349223] [2023-11-23 21:27:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-23 21:27:12,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:12,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997349223] [2023-11-23 21:27:12,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997349223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:12,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:12,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:12,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978879800] [2023-11-23 21:27:12,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:12,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:12,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:12,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:12,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:12,764 INFO L87 Difference]: Start difference. First operand 4123 states and 5888 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-23 21:27:13,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:13,564 INFO L93 Difference]: Finished difference Result 4125 states and 5889 transitions. [2023-11-23 21:27:13,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:13,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 179 [2023-11-23 21:27:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:13,601 INFO L225 Difference]: With dead ends: 4125 [2023-11-23 21:27:13,602 INFO L226 Difference]: Without dead ends: 4122 [2023-11-23 21:27:13,606 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 [2023-11-23 21:27:13,610 INFO L413 NwaCegarLoop]: 1449 mSDtfsCounter, 1512 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:13,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1449 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:27:13,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2023-11-23 21:27:14,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 4122. [2023-11-23 21:27:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4122 states, 2647 states have (on average 1.3332074046089912) internal successors, (3529), 2695 states have internal predecessors, (3529), 1180 states have call successors, (1180), 297 states have call predecessors, (1180), 294 states have return successors, (1177), 1169 states have call predecessors, (1177), 1177 states have call successors, (1177) [2023-11-23 21:27:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 5886 transitions. [2023-11-23 21:27:14,139 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 5886 transitions. Word has length 179 [2023-11-23 21:27:14,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:14,140 INFO L495 AbstractCegarLoop]: Abstraction has 4122 states and 5886 transitions. [2023-11-23 21:27:14,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-23 21:27:14,194 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 5886 transitions. [2023-11-23 21:27:14,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-23 21:27:14,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:14,199 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:14,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:27:14,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:14,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:14,201 INFO L85 PathProgramCache]: Analyzing trace with hash 319497129, now seen corresponding path program 1 times [2023-11-23 21:27:14,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:14,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390843226] [2023-11-23 21:27:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:14,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-23 21:27:14,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:14,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390843226] [2023-11-23 21:27:14,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390843226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:14,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:14,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:14,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034413872] [2023-11-23 21:27:14,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:14,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:14,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:14,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:14,515 INFO L87 Difference]: Start difference. First operand 4122 states and 5886 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-23 21:27:15,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:15,312 INFO L93 Difference]: Finished difference Result 4124 states and 5887 transitions. [2023-11-23 21:27:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:15,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 180 [2023-11-23 21:27:15,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:15,348 INFO L225 Difference]: With dead ends: 4124 [2023-11-23 21:27:15,348 INFO L226 Difference]: Without dead ends: 4121 [2023-11-23 21:27:15,352 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 [2023-11-23 21:27:15,353 INFO L413 NwaCegarLoop]: 1447 mSDtfsCounter, 1509 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:15,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1447 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:27:15,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2023-11-23 21:27:15,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 4121. [2023-11-23 21:27:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4121 states, 2647 states have (on average 1.3328296184359651) internal successors, (3528), 2694 states have internal predecessors, (3528), 1179 states have call successors, (1179), 297 states have call predecessors, (1179), 294 states have return successors, (1177), 1169 states have call predecessors, (1177), 1177 states have call successors, (1177) [2023-11-23 21:27:15,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4121 states to 4121 states and 5884 transitions. [2023-11-23 21:27:15,775 INFO L78 Accepts]: Start accepts. Automaton has 4121 states and 5884 transitions. Word has length 180 [2023-11-23 21:27:15,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:15,775 INFO L495 AbstractCegarLoop]: Abstraction has 4121 states and 5884 transitions. [2023-11-23 21:27:15,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-23 21:27:15,776 INFO L276 IsEmpty]: Start isEmpty. Operand 4121 states and 5884 transitions. [2023-11-23 21:27:15,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 21:27:15,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:15,780 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:15,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:27:15,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:15,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:15,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1313810243, now seen corresponding path program 1 times [2023-11-23 21:27:15,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:15,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20634228] [2023-11-23 21:27:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:15,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-23 21:27:16,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:16,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20634228] [2023-11-23 21:27:16,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20634228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:16,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:16,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:16,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083266874] [2023-11-23 21:27:16,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:16,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:16,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:16,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:16,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:16,076 INFO L87 Difference]: Start difference. First operand 4121 states and 5884 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-23 21:27:16,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:16,837 INFO L93 Difference]: Finished difference Result 4123 states and 5885 transitions. [2023-11-23 21:27:16,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:16,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 181 [2023-11-23 21:27:16,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:16,872 INFO L225 Difference]: With dead ends: 4123 [2023-11-23 21:27:16,873 INFO L226 Difference]: Without dead ends: 4114 [2023-11-23 21:27:16,876 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 [2023-11-23 21:27:16,877 INFO L413 NwaCegarLoop]: 1446 mSDtfsCounter, 1506 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:16,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1446 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:27:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2023-11-23 21:27:17,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 4114. [2023-11-23 21:27:17,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4114 states, 2641 states have (on average 1.3320711851571374) internal successors, (3518), 2687 states have internal predecessors, (3518), 1178 states have call successors, (1178), 297 states have call predecessors, (1178), 294 states have return successors, (1177), 1169 states have call predecessors, (1177), 1177 states have call successors, (1177) [2023-11-23 21:27:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 5873 transitions. [2023-11-23 21:27:17,452 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 5873 transitions. Word has length 181 [2023-11-23 21:27:17,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:17,456 INFO L495 AbstractCegarLoop]: Abstraction has 4114 states and 5873 transitions. [2023-11-23 21:27:17,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-23 21:27:17,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 5873 transitions. [2023-11-23 21:27:17,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-11-23 21:27:17,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:17,475 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:17,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:27:17,480 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:17,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:17,480 INFO L85 PathProgramCache]: Analyzing trace with hash 832616776, now seen corresponding path program 1 times [2023-11-23 21:27:17,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:17,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519821343] [2023-11-23 21:27:17,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:17,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1230 trivial. 0 not checked. [2023-11-23 21:27:17,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:17,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519821343] [2023-11-23 21:27:17,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519821343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:17,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:17,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:17,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638690431] [2023-11-23 21:27:17,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:17,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:17,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:17,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:17,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:17,915 INFO L87 Difference]: Start difference. First operand 4114 states and 5873 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-11-23 21:27:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:19,323 INFO L93 Difference]: Finished difference Result 9866 states and 14083 transitions. [2023-11-23 21:27:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:19,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 280 [2023-11-23 21:27:19,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:19,385 INFO L225 Difference]: With dead ends: 9866 [2023-11-23 21:27:19,386 INFO L226 Difference]: Without dead ends: 5803 [2023-11-23 21:27:19,404 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 [2023-11-23 21:27:19,405 INFO L413 NwaCegarLoop]: 1447 mSDtfsCounter, 676 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:19,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 2799 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:27:19,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5803 states. [2023-11-23 21:27:19,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5803 to 5796. [2023-11-23 21:27:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5796 states, 3816 states have (on average 1.345649895178197) internal successors, (5135), 3862 states have internal predecessors, (5135), 1571 states have call successors, (1571), 411 states have call predecessors, (1571), 408 states have return successors, (1570), 1562 states have call predecessors, (1570), 1570 states have call successors, (1570) [2023-11-23 21:27:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5796 states to 5796 states and 8276 transitions. [2023-11-23 21:27:19,943 INFO L78 Accepts]: Start accepts. Automaton has 5796 states and 8276 transitions. Word has length 280 [2023-11-23 21:27:19,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:19,944 INFO L495 AbstractCegarLoop]: Abstraction has 5796 states and 8276 transitions. [2023-11-23 21:27:19,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-11-23 21:27:19,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5796 states and 8276 transitions. [2023-11-23 21:27:19,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-11-23 21:27:19,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:19,968 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:19,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:27:19,969 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:19,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:19,970 INFO L85 PathProgramCache]: Analyzing trace with hash -777944092, now seen corresponding path program 1 times [2023-11-23 21:27:19,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:19,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936504485] [2023-11-23 21:27:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:19,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1367 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1339 trivial. 0 not checked. [2023-11-23 21:27:20,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:20,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936504485] [2023-11-23 21:27:20,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936504485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:20,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:20,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:20,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826354417] [2023-11-23 21:27:20,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:20,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:20,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:20,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:20,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:20,323 INFO L87 Difference]: Start difference. First operand 5796 states and 8276 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-23 21:27:21,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:21,432 INFO L93 Difference]: Finished difference Result 9137 states and 13042 transitions. [2023-11-23 21:27:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:21,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 303 [2023-11-23 21:27:21,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:21,454 INFO L225 Difference]: With dead ends: 9137 [2023-11-23 21:27:21,454 INFO L226 Difference]: Without dead ends: 3399 [2023-11-23 21:27:21,483 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 [2023-11-23 21:27:21,485 INFO L413 NwaCegarLoop]: 1445 mSDtfsCounter, 5 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:21,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2883 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:27:21,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2023-11-23 21:27:21,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3394. [2023-11-23 21:27:21,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 2244 states have (on average 1.3458110516934045) internal successors, (3020), 2267 states have internal predecessors, (3020), 912 states have call successors, (912), 239 states have call predecessors, (912), 237 states have return successors, (911), 907 states have call predecessors, (911), 911 states have call successors, (911) [2023-11-23 21:27:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 4843 transitions. [2023-11-23 21:27:21,822 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 4843 transitions. Word has length 303 [2023-11-23 21:27:21,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:21,822 INFO L495 AbstractCegarLoop]: Abstraction has 3394 states and 4843 transitions. [2023-11-23 21:27:21,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-23 21:27:21,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 4843 transitions. [2023-11-23 21:27:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-11-23 21:27:21,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:21,848 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:21,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:27:21,849 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:21,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:21,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2032451825, now seen corresponding path program 1 times [2023-11-23 21:27:21,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:21,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702146133] [2023-11-23 21:27:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:21,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2703 trivial. 0 not checked. [2023-11-23 21:27:22,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:22,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702146133] [2023-11-23 21:27:22,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702146133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:22,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:22,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:27:22,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856927334] [2023-11-23 21:27:22,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:22,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:27:22,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:22,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:27:22,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:27:22,426 INFO L87 Difference]: Start difference. First operand 3394 states and 4843 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-23 21:27:23,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:23,801 INFO L93 Difference]: Finished difference Result 7114 states and 10294 transitions. [2023-11-23 21:27:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:27:23,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 366 [2023-11-23 21:27:23,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:23,828 INFO L225 Difference]: With dead ends: 7114 [2023-11-23 21:27:23,828 INFO L226 Difference]: Without dead ends: 4198 [2023-11-23 21:27:23,843 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 [2023-11-23 21:27:23,845 INFO L413 NwaCegarLoop]: 1795 mSDtfsCounter, 268 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 5061 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:23,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 5061 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:27:23,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2023-11-23 21:27:24,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 3398. [2023-11-23 21:27:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3398 states, 2248 states have (on average 1.3451957295373667) internal successors, (3024), 2271 states have internal predecessors, (3024), 912 states have call successors, (912), 239 states have call predecessors, (912), 237 states have return successors, (911), 907 states have call predecessors, (911), 911 states have call successors, (911) [2023-11-23 21:27:24,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3398 states to 3398 states and 4847 transitions. [2023-11-23 21:27:24,219 INFO L78 Accepts]: Start accepts. Automaton has 3398 states and 4847 transitions. Word has length 366 [2023-11-23 21:27:24,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:24,220 INFO L495 AbstractCegarLoop]: Abstraction has 3398 states and 4847 transitions. [2023-11-23 21:27:24,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-23 21:27:24,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3398 states and 4847 transitions. [2023-11-23 21:27:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-11-23 21:27:24,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:24,251 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:24,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:27:24,251 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:24,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:24,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2069708682, now seen corresponding path program 1 times [2023-11-23 21:27:24,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:24,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718700847] [2023-11-23 21:27:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:24,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2773 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 2741 trivial. 0 not checked. [2023-11-23 21:27:26,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:26,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718700847] [2023-11-23 21:27:26,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718700847] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:27:26,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739765981] [2023-11-23 21:27:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:26,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:27:26,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:27:26,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:27:26,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_459d7ef2-bdba-4ca4-9057-538431d0f7c5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:27:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:28,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 4214 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-23 21:27:28,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:27:29,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2773 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 2729 trivial. 0 not checked. [2023-11-23 21:27:29,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:27:30,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2773 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2751 trivial. 0 not checked. [2023-11-23 21:27:30,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739765981] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 21:27:30,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:27:30,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 11] total 18 [2023-11-23 21:27:30,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428410008] [2023-11-23 21:27:30,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:30,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:27:30,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:30,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:27:30,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:27:30,531 INFO L87 Difference]: Start difference. First operand 3398 states and 4847 transitions. Second operand has 6 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 3 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (63), 3 states have call predecessors, (63), 2 states have call successors, (63)