./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash eaaec3cc0f5537133af92fa7cbd54bc8d5ff0f4d0c87a0d3c9d98d3d6549f9cf --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:52:54,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:52:54,886 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 13:52:54,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:52:54,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:52:54,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:52:54,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:52:54,914 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:52:54,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:52:54,915 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:52:54,916 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:52:54,917 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:52:54,917 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:52:54,918 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:52:54,918 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:52:54,919 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:52:54,919 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:52:54,920 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:52:54,920 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:52:54,921 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:52:54,922 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:52:54,924 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:52:54,924 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:52:54,925 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:52:54,925 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:52:54,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:52:54,926 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:52:54,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:52:54,927 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:52:54,928 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:52:54,928 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:52:54,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:52:54,929 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:52:54,929 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:52:54,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:52:54,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:52:54,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:52:54,930 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:52:54,930 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:52:54,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:52:54,931 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:52:54,931 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:52:54,931 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:52:54,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:52:54,932 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_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eaaec3cc0f5537133af92fa7cbd54bc8d5ff0f4d0c87a0d3c9d98d3d6549f9cf [2023-12-02 13:52:55,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:52:55,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:52:55,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:52:55,152 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:52:55,152 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:52:55,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i [2023-12-02 13:52:57,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:52:58,486 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:52:58,487 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i [2023-12-02 13:52:58,544 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/data/7fe275f4d/206818b4893d442bb96f14b707e7dff6/FLAG5dd07cf51 [2023-12-02 13:52:58,559 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/data/7fe275f4d/206818b4893d442bb96f14b707e7dff6 [2023-12-02 13:52:58,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:52:58,563 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:52:58,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:52:58,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:52:58,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:52:58,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:52:58" (1/1) ... [2023-12-02 13:52:58,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd9c18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:58, skipping insertion in model container [2023-12-02 13:52:58,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:52:58" (1/1) ... [2023-12-02 13:52:58,746 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:52:59,580 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_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i[210460,210473] [2023-12-02 13:53:01,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:53:01,539 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:53:01,647 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (__preempt_count)); [7071] [2023-12-02 13:53:01,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (__preempt_count)); [7074] [2023-12-02 13:53:01,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%P0": "+m" (__preempt_count): "qi" (val)); [7076] [2023-12-02 13:53:01,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (__preempt_count)); [7081] [2023-12-02 13:53:01,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (__preempt_count)); [7084] [2023-12-02 13:53:01,651 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%P0": "+m" (__preempt_count): "ri" (val)); [7086] [2023-12-02 13:53:01,651 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (__preempt_count)); [7091] [2023-12-02 13:53:01,651 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (__preempt_count)); [7094] [2023-12-02 13:53:01,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%P0": "+m" (__preempt_count): "ri" (val)); [7096] [2023-12-02 13:53:01,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (__preempt_count)); [7101] [2023-12-02 13:53:01,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (__preempt_count)); [7104] [2023-12-02 13:53:01,653 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%P0": "+m" (__preempt_count): "re" (val)); [7106] [2023-12-02 13:53:01,653 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (__preempt_count)); [7124] [2023-12-02 13:53:01,654 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (__preempt_count)); [7127] [2023-12-02 13:53:01,654 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%P0": "+m" (__preempt_count): "qi" (- val)); [7129] [2023-12-02 13:53:01,654 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (__preempt_count)); [7134] [2023-12-02 13:53:01,654 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (__preempt_count)); [7137] [2023-12-02 13:53:01,655 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%P0": "+m" (__preempt_count): "ri" (- val)); [7139] [2023-12-02 13:53:01,655 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (__preempt_count)); [7144] [2023-12-02 13:53:01,655 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (__preempt_count)); [7147] [2023-12-02 13:53:01,655 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%P0": "+m" (__preempt_count): "ri" (- val)); [7149] [2023-12-02 13:53:01,656 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (__preempt_count)); [7154] [2023-12-02 13:53:01,656 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (__preempt_count)); [7157] [2023-12-02 13:53:01,656 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%P0": "+m" (__preempt_count): "re" (- val)); [7159] [2023-12-02 13:53:01,657 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7196] [2023-12-02 13:53:01,658 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7203] [2023-12-02 13:53:01,662 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_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i[210460,210473] [2023-12-02 13:53:01,777 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"./arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [9223-9224] [2023-12-02 13:53:01,778 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (44UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [9229-9231] [2023-12-02 13:53:01,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [9261] [2023-12-02 13:53:01,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [9268] [2023-12-02 13:53:01,783 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [9337-9338] [2023-12-02 13:53:01,784 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [9366-9367] [2023-12-02 13:53:01,825 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [10636] [2023-12-02 13:53:02,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:53:02,101 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:53:02,102 WARN L675 CHandler]: The function __VERIFIER_nondet_u16 is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:53:02,102 WARN L675 CHandler]: The function __VERIFIER_nondet_u8 is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:53:02,102 WARN L675 CHandler]: The function __VERIFIER_nondet_u32 is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:53:02,102 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:53:02,108 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:53:02,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:02 WrapperNode [2023-12-02 13:53:02,109 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:53:02,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:53:02,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:53:02,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:53:02,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:02" (1/1) ... [2023-12-02 13:53:02,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:02" (1/1) ... [2023-12-02 13:53:02,481 INFO L138 Inliner]: procedures = 405, calls = 4309, calls flagged for inlining = 195, calls inlined = 169, statements flattened = 9885 [2023-12-02 13:53:02,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:53:02,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:53:02,483 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:53:02,483 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:53:02,491 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:02" (1/1) ... [2023-12-02 13:53:02,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:02" (1/1) ... [2023-12-02 13:53:02,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:02" (1/1) ... [2023-12-02 13:53:02,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:02" (1/1) ... [2023-12-02 13:53:02,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:02" (1/1) ... [2023-12-02 13:53:02,677 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:02" (1/1) ... [2023-12-02 13:53:02,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:02" (1/1) ... [2023-12-02 13:53:02,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:02" (1/1) ... [2023-12-02 13:53:02,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:53:02,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:53:02,810 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:53:02,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:53:02,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:02" (1/1) ... [2023-12-02 13:53:02,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:53:02,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:53:02,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:53:02,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:53:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_free_ctl_blks [2023-12-02 13:53:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_free_ctl_blks [2023-12-02 13:53:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_ch_alloc_skb [2023-12-02 13:53:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_ch_alloc_skb [2023-12-02 13:53:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_remove_interface [2023-12-02 13:53:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_remove_interface [2023-12-02 13:53:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_txskb [2023-12-02 13:53:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_txskb [2023-12-02 13:53:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-12-02 13:53:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-12-02 13:53:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 13:53:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 13:53:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-12-02 13:53:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-12-02 13:53:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-12-02 13:53:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-12-02 13:53:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure get_feat_caps [2023-12-02 13:53:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure get_feat_caps [2023-12-02 13:53:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_probe [2023-12-02 13:53:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_probe [2023-12-02 13:53:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_allocate_ctl_block [2023-12-02 13:53:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_allocate_ctl_block [2023-12-02 13:53:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure conf_is_ht40_plus [2023-12-02 13:53:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure conf_is_ht40_plus [2023-12-02 13:53:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-12-02 13:53:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-12-02 13:53:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_enable_ch_int [2023-12-02 13:53:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_enable_ch_int [2023-12-02 13:53:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_sta_remove [2023-12-02 13:53:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_sta_remove [2023-12-02 13:53:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_start [2023-12-02 13:53:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_start [2023-12-02 13:53:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 13:53:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 13:53:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 13:53:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_pmc_enter_bmps_state [2023-12-02 13:53:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_pmc_enter_bmps_state [2023-12-02 13:53:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_ch_free_skbs [2023-12-02 13:53:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_ch_free_skbs [2023-12-02 13:53:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_configure_filter [2023-12-02 13:53:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_configure_filter [2023-12-02 13:53:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_convert_sta_to_v1 [2023-12-02 13:53:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_convert_sta_to_v1 [2023-12-02 13:53:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2023-12-02 13:53:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 13:53:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 13:53:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 13:53:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 13:53:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:53:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_stop [2023-12-02 13:53:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_stop [2023-12-02 13:53:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-12-02 13:53:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-12-02 13:53:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 13:53:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 13:53:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 13:53:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 13:53:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 13:53:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-12-02 13:53:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-12-02 13:53:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-12-02 13:53:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-12-02 13:53:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 13:53:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 13:53:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-12-02 13:53:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-12-02 13:53:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2023-12-02 13:53:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2023-12-02 13:53:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 13:53:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 13:53:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_config_sta [2023-12-02 13:53:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_config_sta [2023-12-02 13:53:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2023-12-02 13:53:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2023-12-02 13:53:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2023-12-02 13:53:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2023-12-02 13:53:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_set_link_st [2023-12-02 13:53:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_set_link_st [2023-12-02 13:53:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2023-12-02 13:53:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2023-12-02 13:53:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2023-12-02 13:53:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~u32~0~X~~u32~0~TO~int [2023-12-02 13:53:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~u32~0~X~~u32~0~TO~int [2023-12-02 13:53:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:53:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2023-12-02 13:53:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2023-12-02 13:53:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-12-02 13:53:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-12-02 13:53:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:53:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2023-12-02 13:53:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2023-12-02 13:53:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_config [2023-12-02 13:53:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_config [2023-12-02 13:53:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:53:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 13:53:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_set_key [2023-12-02 13:53:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_set_key [2023-12-02 13:53:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 13:53:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 13:53:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 13:53:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 13:53:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_add_interface [2023-12-02 13:53:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_add_interface [2023-12-02 13:53:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_config_bss [2023-12-02 13:53:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_config_bss [2023-12-02 13:53:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_free_mem_pools [2023-12-02 13:53:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_free_mem_pools [2023-12-02 13:53:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource_byname [2023-12-02 13:53:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource_byname [2023-12-02 13:53:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_stop [2023-12-02 13:53:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_stop [2023-12-02 13:53:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:53:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:53:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 13:53:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 13:53:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_tx [2023-12-02 13:53:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_tx [2023-12-02 13:53:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure buff_to_be [2023-12-02 13:53:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure buff_to_be [2023-12-02 13:53:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 13:53:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 13:53:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 13:53:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 13:53:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_set_power_params [2023-12-02 13:53:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_set_power_params [2023-12-02 13:53:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2023-12-02 13:53:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2023-12-02 13:53:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_sta_add [2023-12-02 13:53:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_sta_add [2023-12-02 13:53:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure get_vif_by_addr [2023-12-02 13:53:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure get_vif_by_addr [2023-12-02 13:53:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2023-12-02 13:53:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2023-12-02 13:53:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_tx_status_irqsafe [2023-12-02 13:53:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_tx_status_irqsafe [2023-12-02 13:53:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 13:53:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 13:53:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_data_qos [2023-12-02 13:53:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_data_qos [2023-12-02 13:53:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 13:53:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 13:53:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 13:53:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 13:53:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2023-12-02 13:53:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2023-12-02 13:53:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:53:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:53:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_set_stakey [2023-12-02 13:53:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_set_stakey [2023-12-02 13:53:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure get_sta_index [2023-12-02 13:53:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure get_sta_index [2023-12-02 13:53:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure write_file_dump [2023-12-02 13:53:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure write_file_dump [2023-12-02 13:53:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:53:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 13:53:02,903 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 13:53:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:53:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_rsp_status_check [2023-12-02 13:53:02,903 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_rsp_status_check [2023-12-02 13:53:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_delete_bss [2023-12-02 13:53:02,903 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_delete_bss [2023-12-02 13:53:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-12-02 13:53:02,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-12-02 13:53:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure conf_is_ht40_minus [2023-12-02 13:53:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure conf_is_ht40_minus [2023-12-02 13:53:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_bss_info_changed [2023-12-02 13:53:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_bss_info_changed [2023-12-02 13:53:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_remove [2023-12-02 13:53:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_remove [2023-12-02 13:53:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2023-12-02 13:53:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2023-12-02 13:53:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 13:53:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 13:53:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 13:53:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-12-02 13:53:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-12-02 13:53:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_fill_skb [2023-12-02 13:53:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_fill_skb [2023-12-02 13:53:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-12-02 13:53:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-12-02 13:53:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 13:53:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 13:53:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_sw_scan_complete [2023-12-02 13:53:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_sw_scan_complete [2023-12-02 13:53:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure is_cap_supported [2023-12-02 13:53:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cap_supported [2023-12-02 13:53:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_update_allowed_rates [2023-12-02 13:53:02,906 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_update_allowed_rates [2023-12-02 13:53:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2023-12-02 13:53:02,906 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2023-12-02 13:53:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_is_fw_version [2023-12-02 13:53:02,906 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_is_fw_version [2023-12-02 13:53:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 13:53:02,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 13:53:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_read_register [2023-12-02 13:53:02,907 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_read_register [2023-12-02 13:53:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_pmc_exit_bmps_state [2023-12-02 13:53:02,907 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_pmc_exit_bmps_state [2023-12-02 13:53:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2023-12-02 13:53:02,907 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2023-12-02 13:53:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_sw_scan_start [2023-12-02 13:53:02,907 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_sw_scan_start [2023-12-02 13:53:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2023-12-02 13:53:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2023-12-02 13:53:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 13:53:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 13:53:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2023-12-02 13:53:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2023-12-02 13:53:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_close [2023-12-02 13:53:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_close [2023-12-02 13:53:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 13:53:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2023-12-02 13:53:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2023-12-02 13:53:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 13:53:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 13:53:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_resume [2023-12-02 13:53:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_resume [2023-12-02 13:53:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_set_rts_threshold [2023-12-02 13:53:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_set_rts_threshold [2023-12-02 13:53:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_set_sta_params [2023-12-02 13:53:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_set_sta_params [2023-12-02 13:53:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_ampdu_action [2023-12-02 13:53:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_ampdu_action [2023-12-02 13:53:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_init_descs [2023-12-02 13:53:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_init_descs [2023-12-02 13:53:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2023-12-02 13:53:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2023-12-02 13:53:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-12-02 13:53:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-12-02 13:53:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2023-12-02 13:53:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2023-12-02 13:53:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_write_register [2023-12-02 13:53:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_write_register [2023-12-02 13:53:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_set_tx_pdu [2023-12-02 13:53:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_set_tx_pdu [2023-12-02 13:53:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_suspend [2023-12-02 13:53:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_suspend [2023-12-02 13:53:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_add_ba_session [2023-12-02 13:53:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_add_ba_session [2023-12-02 13:53:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_send_and_wait [2023-12-02 13:53:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_send_and_wait [2023-12-02 13:53:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_init_tx_bd [2023-12-02 13:53:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_init_tx_bd [2023-12-02 13:53:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_free_ctl_block [2023-12-02 13:53:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_free_ctl_block [2023-12-02 13:53:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2023-12-02 13:53:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2023-12-02 13:53:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure simple_open [2023-12-02 13:53:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_open [2023-12-02 13:53:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure write_file_bool_bmps [2023-12-02 13:53:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure write_file_bool_bmps [2023-12-02 13:53:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2023-12-02 13:53:02,913 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2023-12-02 13:53:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:53:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2023-12-02 13:53:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2023-12-02 13:53:02,913 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2023-12-02 13:53:04,092 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:53:04,099 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:53:04,854 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 13:53:18,350 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:53:20,753 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:53:20,754 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-02 13:53:20,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:53:20 BoogieIcfgContainer [2023-12-02 13:53:20,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:53:20,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:53:20,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:53:20,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:53:20,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:52:58" (1/3) ... [2023-12-02 13:53:20,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa4d0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:53:20, skipping insertion in model container [2023-12-02 13:53:20,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:02" (2/3) ... [2023-12-02 13:53:20,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa4d0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:53:20, skipping insertion in model container [2023-12-02 13:53:20,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:53:20" (3/3) ... [2023-12-02 13:53:20,765 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i [2023-12-02 13:53:20,784 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:53:20,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:53:20,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:53:20,885 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;@74b24238, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:53:20,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:53:20,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 2638 states, 1650 states have (on average 1.2987878787878788) internal successors, (2143), 1669 states have internal predecessors, (2143), 869 states have call successors, (869), 118 states have call predecessors, (869), 117 states have return successors, (863), 863 states have call predecessors, (863), 863 states have call successors, (863) [2023-12-02 13:53:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 13:53:20,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:20,916 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:53:20,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:53:20,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:20,921 INFO L85 PathProgramCache]: Analyzing trace with hash 939642061, now seen corresponding path program 1 times [2023-12-02 13:53:20,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:20,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051365174] [2023-12-02 13:53:20,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:20,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-12-02 13:53:22,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:53:22,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051365174] [2023-12-02 13:53:22,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051365174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:22,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:53:22,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:53:22,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746276658] [2023-12-02 13:53:22,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:22,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:53:22,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:22,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:53:22,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:53:22,061 INFO L87 Difference]: Start difference. First operand has 2638 states, 1650 states have (on average 1.2987878787878788) internal successors, (2143), 1669 states have internal predecessors, (2143), 869 states have call successors, (869), 118 states have call predecessors, (869), 117 states have return successors, (863), 863 states have call predecessors, (863), 863 states have call successors, (863) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-02 13:53:26,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:53:29,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:53:31,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:53:33,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:53:36,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:53:36,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:53:36,402 INFO L93 Difference]: Finished difference Result 7846 states and 11569 transitions. [2023-12-02 13:53:36,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:53:36,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 70 [2023-12-02 13:53:36,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:53:36,467 INFO L225 Difference]: With dead ends: 7846 [2023-12-02 13:53:36,467 INFO L226 Difference]: Without dead ends: 5209 [2023-12-02 13:53:36,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:53:36,497 INFO L413 NwaCegarLoop]: 3573 mSDtfsCounter, 3800 mSDsluCounter, 3550 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 9 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3800 SdHoareTripleChecker+Valid, 7123 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:53:36,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3800 Valid, 7123 Invalid, 642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 629 Invalid, 4 Unknown, 0 Unchecked, 14.0s Time] [2023-12-02 13:53:36,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5209 states. [2023-12-02 13:53:37,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5209 to 5209. [2023-12-02 13:53:37,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 3269 states have (on average 1.2924441725298257) internal successors, (4225), 3291 states have internal predecessors, (4225), 1707 states have call successors, (1707), 233 states have call predecessors, (1707), 232 states have return successors, (1706), 1706 states have call predecessors, (1706), 1706 states have call successors, (1706) [2023-12-02 13:53:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 7638 transitions. [2023-12-02 13:53:37,083 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 7638 transitions. Word has length 70 [2023-12-02 13:53:37,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:53:37,084 INFO L495 AbstractCegarLoop]: Abstraction has 5209 states and 7638 transitions. [2023-12-02 13:53:37,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-02 13:53:37,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 7638 transitions. [2023-12-02 13:53:37,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 13:53:37,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:37,094 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:53:37,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:53:37,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:53:37,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:37,095 INFO L85 PathProgramCache]: Analyzing trace with hash 880133648, now seen corresponding path program 1 times [2023-12-02 13:53:37,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:37,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355410952] [2023-12-02 13:53:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:37,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-02 13:53:37,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:53:37,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355410952] [2023-12-02 13:53:37,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355410952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:37,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:53:37,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:53:37,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397338163] [2023-12-02 13:53:37,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:37,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:53:37,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:53:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:53:37,952 INFO L87 Difference]: Start difference. First operand 5209 states and 7638 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:53:44,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:53:46,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:53:49,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:53:51,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:53:53,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:53:54,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:53:57,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:53:59,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:53:59,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:53:59,243 INFO L93 Difference]: Finished difference Result 10397 states and 15285 transitions. [2023-12-02 13:53:59,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:53:59,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 79 [2023-12-02 13:53:59,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:53:59,336 INFO L225 Difference]: With dead ends: 10397 [2023-12-02 13:53:59,336 INFO L226 Difference]: Without dead ends: 10392 [2023-12-02 13:53:59,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:59,346 INFO L413 NwaCegarLoop]: 3584 mSDtfsCounter, 3825 mSDsluCounter, 7102 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3825 SdHoareTripleChecker+Valid, 10686 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:53:59,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3825 Valid, 10686 Invalid, 955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 948 Invalid, 6 Unknown, 0 Unchecked, 20.9s Time] [2023-12-02 13:53:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10392 states. [2023-12-02 13:54:00,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10392 to 10384. [2023-12-02 13:54:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10384 states, 6516 states have (on average 1.2926642111724984) internal successors, (8423), 6560 states have internal predecessors, (8423), 3403 states have call successors, (3403), 465 states have call predecessors, (3403), 464 states have return successors, (3442), 3402 states have call predecessors, (3442), 3402 states have call successors, (3442) [2023-12-02 13:54:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10384 states to 10384 states and 15268 transitions. [2023-12-02 13:54:00,212 INFO L78 Accepts]: Start accepts. Automaton has 10384 states and 15268 transitions. Word has length 79 [2023-12-02 13:54:00,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:54:00,213 INFO L495 AbstractCegarLoop]: Abstraction has 10384 states and 15268 transitions. [2023-12-02 13:54:00,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:54:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 10384 states and 15268 transitions. [2023-12-02 13:54:00,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-02 13:54:00,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:54:00,246 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 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] [2023-12-02 13:54:00,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:54:00,247 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:54:00,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:54:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1215750806, now seen corresponding path program 1 times [2023-12-02 13:54:00,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:54:00,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378028743] [2023-12-02 13:54:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:00,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:54:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-02 13:54:00,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:54:00,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378028743] [2023-12-02 13:54:00,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378028743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:54:00,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:54:00,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:54:00,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010976469] [2023-12-02 13:54:00,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:54:00,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:54:00,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:54:00,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:54:00,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:54:00,821 INFO L87 Difference]: Start difference. First operand 10384 states and 15268 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 13:54:03,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:07,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:09,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:12,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:12,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:54:12,588 INFO L93 Difference]: Finished difference Result 24854 states and 36317 transitions. [2023-12-02 13:54:12,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:54:12,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 149 [2023-12-02 13:54:12,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:54:12,661 INFO L225 Difference]: With dead ends: 24854 [2023-12-02 13:54:12,661 INFO L226 Difference]: Without dead ends: 14491 [2023-12-02 13:54:12,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:54:12,715 INFO L413 NwaCegarLoop]: 3603 mSDtfsCounter, 1489 mSDsluCounter, 3382 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 6985 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:54:12,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 6985 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 758 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2023-12-02 13:54:12,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14491 states. [2023-12-02 13:54:13,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14491 to 14484. [2023-12-02 13:54:13,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14484 states, 9062 states have (on average 1.2868020304568528) internal successors, (11661), 9140 states have internal predecessors, (11661), 4677 states have call successors, (4677), 745 states have call predecessors, (4677), 744 states have return successors, (4732), 4674 states have call predecessors, (4732), 4676 states have call successors, (4732) [2023-12-02 13:54:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14484 states to 14484 states and 21070 transitions. [2023-12-02 13:54:13,897 INFO L78 Accepts]: Start accepts. Automaton has 14484 states and 21070 transitions. Word has length 149 [2023-12-02 13:54:13,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:54:13,898 INFO L495 AbstractCegarLoop]: Abstraction has 14484 states and 21070 transitions. [2023-12-02 13:54:13,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 13:54:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 14484 states and 21070 transitions. [2023-12-02 13:54:13,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-02 13:54:13,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:54:13,940 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 3, 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] [2023-12-02 13:54:13,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 13:54:13,940 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:54:13,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:54:13,941 INFO L85 PathProgramCache]: Analyzing trace with hash -736954175, now seen corresponding path program 1 times [2023-12-02 13:54:13,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:54:13,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162397347] [2023-12-02 13:54:13,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:13,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:54:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2023-12-02 13:54:14,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:54:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162397347] [2023-12-02 13:54:14,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162397347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:54:14,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:54:14,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:54:14,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176198311] [2023-12-02 13:54:14,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:54:14,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:54:14,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:54:14,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:54:14,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:54:14,532 INFO L87 Difference]: Start difference. First operand 14484 states and 21070 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-12-02 13:54:17,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:19,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:24,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:26,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:28,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:29,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:54:29,138 INFO L93 Difference]: Finished difference Result 38808 states and 56587 transitions. [2023-12-02 13:54:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:54:29,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 199 [2023-12-02 13:54:29,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:54:29,259 INFO L225 Difference]: With dead ends: 38808 [2023-12-02 13:54:29,259 INFO L226 Difference]: Without dead ends: 24345 [2023-12-02 13:54:29,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:54:29,306 INFO L413 NwaCegarLoop]: 4814 mSDtfsCounter, 3607 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 73 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3607 SdHoareTripleChecker+Valid, 8188 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:54:29,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3607 Valid, 8188 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 901 Invalid, 3 Unknown, 0 Unchecked, 13.9s Time] [2023-12-02 13:54:29,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24345 states. [2023-12-02 13:54:30,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24345 to 24338. [2023-12-02 13:54:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24338 states, 15310 states have (on average 1.2817112998040496) internal successors, (19623), 15434 states have internal predecessors, (19623), 7831 states have call successors, (7831), 1197 states have call predecessors, (7831), 1196 states have return successors, (7908), 7826 states have call predecessors, (7908), 7830 states have call successors, (7908) [2023-12-02 13:54:31,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24338 states to 24338 states and 35362 transitions. [2023-12-02 13:54:31,141 INFO L78 Accepts]: Start accepts. Automaton has 24338 states and 35362 transitions. Word has length 199 [2023-12-02 13:54:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:54:31,142 INFO L495 AbstractCegarLoop]: Abstraction has 24338 states and 35362 transitions. [2023-12-02 13:54:31,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-12-02 13:54:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 24338 states and 35362 transitions. [2023-12-02 13:54:31,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-02 13:54:31,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:54:31,181 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 3, 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] [2023-12-02 13:54:31,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 13:54:31,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:54:31,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:54:31,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1883123135, now seen corresponding path program 1 times [2023-12-02 13:54:31,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:54:31,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531410716] [2023-12-02 13:54:31,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:31,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:54:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2023-12-02 13:54:31,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:54:31,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531410716] [2023-12-02 13:54:31,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531410716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:54:31,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:54:31,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:54:31,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949099210] [2023-12-02 13:54:31,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:54:31,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:54:31,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:54:31,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:54:31,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:54:31,864 INFO L87 Difference]: Start difference. First operand 24338 states and 35362 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-02 13:54:35,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:37,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:41,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:54:42,651 INFO L93 Difference]: Finished difference Result 36524 states and 53085 transitions. [2023-12-02 13:54:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:54:42,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 199 [2023-12-02 13:54:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:54:42,763 INFO L225 Difference]: With dead ends: 36524 [2023-12-02 13:54:42,763 INFO L226 Difference]: Without dead ends: 24354 [2023-12-02 13:54:42,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:54:42,799 INFO L413 NwaCegarLoop]: 3541 mSDtfsCounter, 4 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7076 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:54:42,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7076 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 618 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2023-12-02 13:54:42,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24354 states. [2023-12-02 13:54:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24354 to 24354. [2023-12-02 13:54:44,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24354 states, 15322 states have (on average 1.2814906670147501) internal successors, (19635), 15450 states have internal predecessors, (19635), 7831 states have call successors, (7831), 1197 states have call predecessors, (7831), 1200 states have return successors, (7912), 7826 states have call predecessors, (7912), 7830 states have call successors, (7912) [2023-12-02 13:54:44,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24354 states to 24354 states and 35378 transitions. [2023-12-02 13:54:44,597 INFO L78 Accepts]: Start accepts. Automaton has 24354 states and 35378 transitions. Word has length 199 [2023-12-02 13:54:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:54:44,598 INFO L495 AbstractCegarLoop]: Abstraction has 24354 states and 35378 transitions. [2023-12-02 13:54:44,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-02 13:54:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 24354 states and 35378 transitions. [2023-12-02 13:54:44,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-02 13:54:44,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:54:44,624 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 3, 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] [2023-12-02 13:54:44,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 13:54:44,625 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:54:44,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:54:44,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1247504377, now seen corresponding path program 1 times [2023-12-02 13:54:44,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:54:44,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124899220] [2023-12-02 13:54:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:44,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:54:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2023-12-02 13:54:45,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:54:45,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124899220] [2023-12-02 13:54:45,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124899220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:54:45,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:54:45,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 13:54:45,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15665131] [2023-12-02 13:54:45,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:54:45,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:54:45,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:54:45,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:54:45,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:54:45,927 INFO L87 Difference]: Start difference. First operand 24354 states and 35378 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (26), 5 states have call predecessors, (26), 3 states have call successors, (26) [2023-12-02 13:54:50,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:52,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:54:54,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:09,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:14,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:16,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:17,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:20,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:22,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:24,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:26,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:28,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:31,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:33,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:35,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:36,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:38,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:40,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:52,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:53,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:55,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:55:57,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:00,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:02,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:04,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:06,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:08,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:09,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:56:09,192 INFO L93 Difference]: Finished difference Result 51825 states and 75347 transitions. [2023-12-02 13:56:09,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 13:56:09,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (26), 5 states have call predecessors, (26), 3 states have call successors, (26) Word has length 200 [2023-12-02 13:56:09,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:56:09,314 INFO L225 Difference]: With dead ends: 51825 [2023-12-02 13:56:09,314 INFO L226 Difference]: Without dead ends: 27492 [2023-12-02 13:56:09,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:56:09,366 INFO L413 NwaCegarLoop]: 1302 mSDtfsCounter, 7798 mSDsluCounter, 3394 mSDsCounter, 0 mSdLazyCounter, 13665 mSolverCounterSat, 4392 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8817 SdHoareTripleChecker+Valid, 4696 SdHoareTripleChecker+Invalid, 18076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4392 IncrementalHoareTripleChecker+Valid, 13665 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:56:09,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8817 Valid, 4696 Invalid, 18076 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4392 Valid, 13665 Invalid, 19 Unknown, 0 Unchecked, 81.8s Time] [2023-12-02 13:56:09,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27492 states. [2023-12-02 13:56:11,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27492 to 27402. [2023-12-02 13:56:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27402 states, 17186 states have (on average 1.2769114395438148) internal successors, (21945), 17342 states have internal predecessors, (21945), 8849 states have call successors, (8849), 1321 states have call predecessors, (8849), 1366 states have return successors, (9024), 8870 states have call predecessors, (9024), 8848 states have call successors, (9024) [2023-12-02 13:56:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27402 states to 27402 states and 39818 transitions. [2023-12-02 13:56:11,199 INFO L78 Accepts]: Start accepts. Automaton has 27402 states and 39818 transitions. Word has length 200 [2023-12-02 13:56:11,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:56:11,200 INFO L495 AbstractCegarLoop]: Abstraction has 27402 states and 39818 transitions. [2023-12-02 13:56:11,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (26), 5 states have call predecessors, (26), 3 states have call successors, (26) [2023-12-02 13:56:11,200 INFO L276 IsEmpty]: Start isEmpty. Operand 27402 states and 39818 transitions. [2023-12-02 13:56:11,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-12-02 13:56:11,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:56:11,256 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 8, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:56:11,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 13:56:11,256 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:56:11,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:56:11,257 INFO L85 PathProgramCache]: Analyzing trace with hash 87298117, now seen corresponding path program 1 times [2023-12-02 13:56:11,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:56:11,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869902132] [2023-12-02 13:56:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:11,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:56:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:12,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1519 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2023-12-02 13:56:12,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:56:12,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869902132] [2023-12-02 13:56:12,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869902132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:56:12,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:56:12,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:56:12,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4039369] [2023-12-02 13:56:12,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:56:12,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:56:12,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:56:12,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:56:12,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:56:12,466 INFO L87 Difference]: Start difference. First operand 27402 states and 39818 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 2 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (93), 2 states have call predecessors, (93), 2 states have call successors, (93) [2023-12-02 13:56:15,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:17,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:19,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:27,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:29,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:30,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:56:30,333 INFO L93 Difference]: Finished difference Result 54939 states and 79933 transitions. [2023-12-02 13:56:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:56:30,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 2 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (93), 2 states have call predecessors, (93), 2 states have call successors, (93) Word has length 659 [2023-12-02 13:56:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:56:30,421 INFO L225 Difference]: With dead ends: 54939 [2023-12-02 13:56:30,421 INFO L226 Difference]: Without dead ends: 27558 [2023-12-02 13:56:30,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:56:30,483 INFO L413 NwaCegarLoop]: 3543 mSDtfsCounter, 11 mSDsluCounter, 7067 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 10610 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:56:30,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 10610 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 950 Invalid, 2 Unknown, 0 Unchecked, 16.8s Time] [2023-12-02 13:56:30,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27558 states. [2023-12-02 13:56:32,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27558 to 27426. [2023-12-02 13:56:32,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27426 states, 17210 states have (on average 1.2765252760023242) internal successors, (21969), 17366 states have internal predecessors, (21969), 8849 states have call successors, (8849), 1321 states have call predecessors, (8849), 1366 states have return successors, (9024), 8870 states have call predecessors, (9024), 8848 states have call successors, (9024) [2023-12-02 13:56:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27426 states to 27426 states and 39842 transitions. [2023-12-02 13:56:32,282 INFO L78 Accepts]: Start accepts. Automaton has 27426 states and 39842 transitions. Word has length 659 [2023-12-02 13:56:32,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:56:32,283 INFO L495 AbstractCegarLoop]: Abstraction has 27426 states and 39842 transitions. [2023-12-02 13:56:32,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 2 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (93), 2 states have call predecessors, (93), 2 states have call successors, (93) [2023-12-02 13:56:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 27426 states and 39842 transitions. [2023-12-02 13:56:32,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2023-12-02 13:56:32,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:56:32,354 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:56:32,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 13:56:32,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:56:32,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:56:32,355 INFO L85 PathProgramCache]: Analyzing trace with hash 784388479, now seen corresponding path program 1 times [2023-12-02 13:56:32,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:56:32,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826470060] [2023-12-02 13:56:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:32,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:56:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1579 trivial. 0 not checked. [2023-12-02 13:56:34,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:56:34,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826470060] [2023-12-02 13:56:34,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826470060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:56:34,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:56:34,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:56:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772294938] [2023-12-02 13:56:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:56:34,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:56:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:56:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:56:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:56:34,133 INFO L87 Difference]: Start difference. First operand 27426 states and 39842 transitions. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 4 states have internal predecessors, (225), 2 states have call successors, (95), 2 states have call predecessors, (95), 3 states have return successors, (94), 3 states have call predecessors, (94), 2 states have call successors, (94) [2023-12-02 13:56:37,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:39,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:41,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:43,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:49,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:54,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:56,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:58,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:59,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:56:59,322 INFO L93 Difference]: Finished difference Result 54879 states and 79853 transitions. [2023-12-02 13:56:59,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:56:59,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 4 states have internal predecessors, (225), 2 states have call successors, (95), 2 states have call predecessors, (95), 3 states have return successors, (94), 3 states have call predecessors, (94), 2 states have call successors, (94) Word has length 670 [2023-12-02 13:56:59,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:56:59,395 INFO L225 Difference]: With dead ends: 54879 [2023-12-02 13:56:59,395 INFO L226 Difference]: Without dead ends: 27474 [2023-12-02 13:56:59,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:56:59,447 INFO L413 NwaCegarLoop]: 3541 mSDtfsCounter, 1 mSDsluCounter, 10601 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 14142 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:56:59,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 14142 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1252 Invalid, 4 Unknown, 0 Unchecked, 24.3s Time] [2023-12-02 13:56:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27474 states. [2023-12-02 13:57:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27474 to 27474. [2023-12-02 13:57:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27474 states, 17246 states have (on average 1.2759480459236925) internal successors, (22005), 17402 states have internal predecessors, (22005), 8849 states have call successors, (8849), 1321 states have call predecessors, (8849), 1378 states have return successors, (9072), 8882 states have call predecessors, (9072), 8848 states have call successors, (9072) [2023-12-02 13:57:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27474 states to 27474 states and 39926 transitions. [2023-12-02 13:57:01,203 INFO L78 Accepts]: Start accepts. Automaton has 27474 states and 39926 transitions. Word has length 670 [2023-12-02 13:57:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:57:01,204 INFO L495 AbstractCegarLoop]: Abstraction has 27474 states and 39926 transitions. [2023-12-02 13:57:01,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 4 states have internal predecessors, (225), 2 states have call successors, (95), 2 states have call predecessors, (95), 3 states have return successors, (94), 3 states have call predecessors, (94), 2 states have call successors, (94) [2023-12-02 13:57:01,204 INFO L276 IsEmpty]: Start isEmpty. Operand 27474 states and 39926 transitions. [2023-12-02 13:57:01,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-12-02 13:57:01,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:57:01,251 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:57:01,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 13:57:01,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:57:01,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:57:01,251 INFO L85 PathProgramCache]: Analyzing trace with hash 871066621, now seen corresponding path program 1 times [2023-12-02 13:57:01,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:57:01,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535995427] [2023-12-02 13:57:01,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:57:01,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:57:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:57:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 1538 trivial. 0 not checked. [2023-12-02 13:57:03,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:57:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535995427] [2023-12-02 13:57:03,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535995427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:57:03,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:57:03,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:57:03,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837789474] [2023-12-02 13:57:03,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:57:03,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:57:03,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:57:03,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:57:03,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:57:03,928 INFO L87 Difference]: Start difference. First operand 27474 states and 39926 transitions. Second operand has 5 states, 5 states have (on average 45.8) internal successors, (229), 4 states have internal predecessors, (229), 2 states have call successors, (93), 2 states have call predecessors, (93), 3 states have return successors, (92), 3 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-02 13:57:07,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:57:09,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:57:11,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:57:13,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:57:23,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:57:24,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:57:25,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:57:25,398 INFO L93 Difference]: Finished difference Result 54999 states and 80244 transitions. [2023-12-02 13:57:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:57:25,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 4 states have internal predecessors, (229), 2 states have call successors, (93), 2 states have call predecessors, (93), 3 states have return successors, (92), 3 states have call predecessors, (92), 2 states have call successors, (92) Word has length 668 [2023-12-02 13:57:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:57:25,526 INFO L225 Difference]: With dead ends: 54999 [2023-12-02 13:57:25,526 INFO L226 Difference]: Without dead ends: 27546 [2023-12-02 13:57:25,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:57:25,578 INFO L413 NwaCegarLoop]: 3540 mSDtfsCounter, 2 mSDsluCounter, 10615 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14155 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:57:25,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14155 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1242 Invalid, 5 Unknown, 0 Unchecked, 20.6s Time] [2023-12-02 13:57:25,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27546 states. [2023-12-02 13:57:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27546 to 27522. [2023-12-02 13:57:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27522 states, 17282 states have (on average 1.2753732206920496) internal successors, (22041), 17438 states have internal predecessors, (22041), 8849 states have call successors, (8849), 1321 states have call predecessors, (8849), 1390 states have return successors, (9199), 8894 states have call predecessors, (9199), 8848 states have call successors, (9199) [2023-12-02 13:57:27,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27522 states to 27522 states and 40089 transitions. [2023-12-02 13:57:27,376 INFO L78 Accepts]: Start accepts. Automaton has 27522 states and 40089 transitions. Word has length 668 [2023-12-02 13:57:27,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:57:27,377 INFO L495 AbstractCegarLoop]: Abstraction has 27522 states and 40089 transitions. [2023-12-02 13:57:27,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 4 states have internal predecessors, (229), 2 states have call successors, (93), 2 states have call predecessors, (93), 3 states have return successors, (92), 3 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-02 13:57:27,377 INFO L276 IsEmpty]: Start isEmpty. Operand 27522 states and 40089 transitions. [2023-12-02 13:57:27,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2023-12-02 13:57:27,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:57:27,414 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 15, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:57:27,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 13:57:27,414 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:57:27,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:57:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash 750407527, now seen corresponding path program 1 times [2023-12-02 13:57:27,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:57:27,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044621960] [2023-12-02 13:57:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:57:27,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:57:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:57:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2023-12-02 13:57:28,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:57:28,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044621960] [2023-12-02 13:57:28,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044621960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:57:28,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:57:28,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:57:28,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486463212] [2023-12-02 13:57:28,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:57:28,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:57:28,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:57:28,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:57:28,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:57:28,577 INFO L87 Difference]: Start difference. First operand 27522 states and 40089 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2023-12-02 13:57:31,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:57:33,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:57:35,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:57:43,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:57:45,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:57:47,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:57:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:57:48,596 INFO L93 Difference]: Finished difference Result 57651 states and 84344 transitions. [2023-12-02 13:57:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:57:48,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) Word has length 681 [2023-12-02 13:57:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:57:48,685 INFO L225 Difference]: With dead ends: 57651 [2023-12-02 13:57:48,685 INFO L226 Difference]: Without dead ends: 30150 [2023-12-02 13:57:48,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:57:48,746 INFO L413 NwaCegarLoop]: 3686 mSDtfsCounter, 121 mSDsluCounter, 7263 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 5 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 10949 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:57:48,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 10949 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 951 Invalid, 6 Unknown, 0 Unchecked, 18.9s Time] [2023-12-02 13:57:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30150 states. [2023-12-02 13:57:50,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30150 to 27546. [2023-12-02 13:57:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27546 states, 17306 states have (on average 1.274991332485843) internal successors, (22065), 17462 states have internal predecessors, (22065), 8849 states have call successors, (8849), 1321 states have call predecessors, (8849), 1390 states have return successors, (9199), 8894 states have call predecessors, (9199), 8848 states have call successors, (9199) [2023-12-02 13:57:50,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27546 states to 27546 states and 40113 transitions. [2023-12-02 13:57:50,644 INFO L78 Accepts]: Start accepts. Automaton has 27546 states and 40113 transitions. Word has length 681 [2023-12-02 13:57:50,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:57:50,645 INFO L495 AbstractCegarLoop]: Abstraction has 27546 states and 40113 transitions. [2023-12-02 13:57:50,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2023-12-02 13:57:50,645 INFO L276 IsEmpty]: Start isEmpty. Operand 27546 states and 40113 transitions. [2023-12-02 13:57:50,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2023-12-02 13:57:50,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:57:50,682 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 15, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:57:50,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 13:57:50,682 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:57:50,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:57:50,682 INFO L85 PathProgramCache]: Analyzing trace with hash 935320814, now seen corresponding path program 1 times [2023-12-02 13:57:50,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:57:50,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914691859] [2023-12-02 13:57:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:57:50,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:57:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:57:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2023-12-02 13:57:52,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:57:52,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914691859] [2023-12-02 13:57:52,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914691859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:57:52,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:57:52,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 13:57:52,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399456284] [2023-12-02 13:57:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:57:52,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 13:57:52,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:57:52,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 13:57:52,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:57:52,794 INFO L87 Difference]: Start difference. First operand 27546 states and 40113 transitions. Second operand has 10 states, 10 states have (on average 23.1) internal successors, (231), 8 states have internal predecessors, (231), 3 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (95), 5 states have call predecessors, (95), 3 states have call successors, (95) [2023-12-02 13:57:58,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:00,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:02,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:04,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:06,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:08,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:10,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:12,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:14,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:27,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:28,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:34,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:36,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:38,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:58:40,172 INFO L93 Difference]: Finished difference Result 55155 states and 80496 transitions. [2023-12-02 13:58:40,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 13:58:40,173 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.1) internal successors, (231), 8 states have internal predecessors, (231), 3 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (95), 5 states have call predecessors, (95), 3 states have call successors, (95) Word has length 682 [2023-12-02 13:58:40,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:58:40,255 INFO L225 Difference]: With dead ends: 55155 [2023-12-02 13:58:40,255 INFO L226 Difference]: Without dead ends: 27630 [2023-12-02 13:58:40,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-02 13:58:40,324 INFO L413 NwaCegarLoop]: 3564 mSDtfsCounter, 19 mSDsluCounter, 28479 mSDsCounter, 0 mSdLazyCounter, 2844 mSolverCounterSat, 1 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 32043 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2844 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:58:40,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 32043 Invalid, 2856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2844 Invalid, 11 Unknown, 0 Unchecked, 46.4s Time] [2023-12-02 13:58:40,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27630 states. [2023-12-02 13:58:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27630 to 27594. [2023-12-02 13:58:41,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27594 states, 17342 states have (on average 1.274074501210933) internal successors, (22095), 17498 states have internal predecessors, (22095), 8849 states have call successors, (8849), 1321 states have call predecessors, (8849), 1402 states have return successors, (9211), 8906 states have call predecessors, (9211), 8848 states have call successors, (9211) [2023-12-02 13:58:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27594 states to 27594 states and 40155 transitions. [2023-12-02 13:58:42,096 INFO L78 Accepts]: Start accepts. Automaton has 27594 states and 40155 transitions. Word has length 682 [2023-12-02 13:58:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:58:42,097 INFO L495 AbstractCegarLoop]: Abstraction has 27594 states and 40155 transitions. [2023-12-02 13:58:42,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.1) internal successors, (231), 8 states have internal predecessors, (231), 3 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (95), 5 states have call predecessors, (95), 3 states have call successors, (95) [2023-12-02 13:58:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 27594 states and 40155 transitions. [2023-12-02 13:58:42,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2023-12-02 13:58:42,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:58:42,134 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 15, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:58:42,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 13:58:42,134 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:58:42,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:58:42,134 INFO L85 PathProgramCache]: Analyzing trace with hash 33627970, now seen corresponding path program 1 times [2023-12-02 13:58:42,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:58:42,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660950982] [2023-12-02 13:58:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:58:42,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:58:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:58:43,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1622 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1613 trivial. 0 not checked. [2023-12-02 13:58:43,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:58:43,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660950982] [2023-12-02 13:58:43,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660950982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:58:43,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342149062] [2023-12-02 13:58:43,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:58:43,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:58:43,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:58:43,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:58:43,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:58:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:58:46,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 8654 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:58:46,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:58:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1622 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 1487 trivial. 0 not checked. [2023-12-02 13:58:46,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:58:46,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342149062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:58:46,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:58:46,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-02 13:58:46,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280473136] [2023-12-02 13:58:46,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:58:46,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:58:46,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:58:46,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:58:46,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-02 13:58:46,524 INFO L87 Difference]: Start difference. First operand 27594 states and 40155 transitions. Second operand has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-02 13:58:50,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:52,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:54,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:55,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:58:56,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:01,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:07,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:09,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:59:10,842 INFO L93 Difference]: Finished difference Result 55323 states and 80588 transitions. [2023-12-02 13:59:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:59:10,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 688 [2023-12-02 13:59:10,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:59:10,925 INFO L225 Difference]: With dead ends: 55323 [2023-12-02 13:59:10,925 INFO L226 Difference]: Without dead ends: 27750 [2023-12-02 13:59:10,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:59:10,985 INFO L413 NwaCegarLoop]: 3541 mSDtfsCounter, 12 mSDsluCounter, 10603 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 14144 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:59:10,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 14144 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1267 Invalid, 4 Unknown, 0 Unchecked, 23.4s Time] [2023-12-02 13:59:11,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27750 states. [2023-12-02 13:59:12,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27750 to 27630. [2023-12-02 13:59:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27630 states, 17378 states have (on average 1.2735067326504776) internal successors, (22131), 17534 states have internal predecessors, (22131), 8849 states have call successors, (8849), 1321 states have call predecessors, (8849), 1402 states have return successors, (9211), 8906 states have call predecessors, (9211), 8848 states have call successors, (9211) [2023-12-02 13:59:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27630 states to 27630 states and 40191 transitions. [2023-12-02 13:59:12,791 INFO L78 Accepts]: Start accepts. Automaton has 27630 states and 40191 transitions. Word has length 688 [2023-12-02 13:59:12,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:59:12,791 INFO L495 AbstractCegarLoop]: Abstraction has 27630 states and 40191 transitions. [2023-12-02 13:59:12,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-02 13:59:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 27630 states and 40191 transitions. [2023-12-02 13:59:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2023-12-02 13:59:12,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:59:12,882 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 15, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:59:12,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:59:13,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 13:59:13,083 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:59:13,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:59:13,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2022619081, now seen corresponding path program 1 times [2023-12-02 13:59:13,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:59:13,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412124718] [2023-12-02 13:59:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:59:13,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:59:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:59:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2023-12-02 13:59:15,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:59:15,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412124718] [2023-12-02 13:59:15,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412124718] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:59:15,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778295379] [2023-12-02 13:59:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:59:15,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:59:15,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:59:15,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:59:15,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:59:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:59:17,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 8833 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:59:17,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:59:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2023-12-02 13:59:17,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:59:17,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778295379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:59:17,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:59:17,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-02 13:59:17,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467256997] [2023-12-02 13:59:17,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:59:17,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:59:17,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:59:17,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:59:17,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:59:17,770 INFO L87 Difference]: Start difference. First operand 27630 states and 40191 transitions. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 3 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (101), 3 states have call predecessors, (101), 3 states have call successors, (101) [2023-12-02 13:59:21,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:23,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:24,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:33,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:35,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:37,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:38,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:59:38,730 INFO L93 Difference]: Finished difference Result 56643 states and 82652 transitions. [2023-12-02 13:59:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:59:38,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 3 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (101), 3 states have call predecessors, (101), 3 states have call successors, (101) Word has length 702 [2023-12-02 13:59:38,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:59:38,828 INFO L225 Difference]: With dead ends: 56643 [2023-12-02 13:59:38,828 INFO L226 Difference]: Without dead ends: 29034 [2023-12-02 13:59:38,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:59:38,885 INFO L413 NwaCegarLoop]: 3670 mSDtfsCounter, 64 mSDsluCounter, 7200 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 10 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 10870 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:59:38,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 10870 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 954 Invalid, 4 Unknown, 0 Unchecked, 19.6s Time] [2023-12-02 13:59:38,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29034 states. [2023-12-02 13:59:40,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29034 to 27666. [2023-12-02 13:59:40,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27666 states, 17402 states have (on average 1.2731295253419148) internal successors, (22155), 17558 states have internal predecessors, (22155), 8861 states have call successors, (8861), 1321 states have call predecessors, (8861), 1402 states have return successors, (9223), 8918 states have call predecessors, (9223), 8860 states have call successors, (9223) [2023-12-02 13:59:40,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27666 states to 27666 states and 40239 transitions. [2023-12-02 13:59:40,696 INFO L78 Accepts]: Start accepts. Automaton has 27666 states and 40239 transitions. Word has length 702 [2023-12-02 13:59:40,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:59:40,696 INFO L495 AbstractCegarLoop]: Abstraction has 27666 states and 40239 transitions. [2023-12-02 13:59:40,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 3 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (101), 3 states have call predecessors, (101), 3 states have call successors, (101) [2023-12-02 13:59:40,696 INFO L276 IsEmpty]: Start isEmpty. Operand 27666 states and 40239 transitions. [2023-12-02 13:59:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2023-12-02 13:59:40,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:59:40,734 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 15, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:59:40,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:59:40,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 13:59:40,935 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:59:40,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:59:40,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1303284552, now seen corresponding path program 1 times [2023-12-02 13:59:40,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:59:40,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696942084] [2023-12-02 13:59:40,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:59:40,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:59:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:59:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1663 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1654 trivial. 0 not checked. [2023-12-02 13:59:42,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:59:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696942084] [2023-12-02 13:59:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696942084] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:59:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760946827] [2023-12-02 13:59:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:59:42,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:59:42,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:59:42,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:59:42,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:59:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:59:45,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 9173 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 13:59:45,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:59:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1663 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 1416 trivial. 0 not checked. [2023-12-02 13:59:45,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:59:45,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760946827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:59:45,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:59:45,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-12-02 13:59:45,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109580373] [2023-12-02 13:59:45,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:59:45,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:59:45,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:59:45,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:59:45,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:59:45,399 INFO L87 Difference]: Start difference. First operand 27666 states and 40239 transitions. Second operand has 6 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 3 states have call successors, (109), 2 states have call predecessors, (109), 3 states have return successors, (108), 4 states have call predecessors, (108), 3 states have call successors, (108) [2023-12-02 13:59:50,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:52,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:54,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:56,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:59:58,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:02,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:12,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:13,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:15,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:16,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:00:16,693 INFO L93 Difference]: Finished difference Result 55367 states and 80940 transitions. [2023-12-02 14:00:16,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:00:16,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 3 states have call successors, (109), 2 states have call predecessors, (109), 3 states have return successors, (108), 4 states have call predecessors, (108), 3 states have call successors, (108) Word has length 743 [2023-12-02 14:00:16,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:00:16,784 INFO L225 Difference]: With dead ends: 55367 [2023-12-02 14:00:16,784 INFO L226 Difference]: Without dead ends: 27722 [2023-12-02 14:00:16,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:00:16,862 INFO L413 NwaCegarLoop]: 3542 mSDtfsCounter, 4 mSDsluCounter, 14152 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 4 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 17694 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:00:16,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 17694 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1556 Invalid, 7 Unknown, 0 Unchecked, 30.3s Time] [2023-12-02 14:00:16,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27722 states. [2023-12-02 14:00:18,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27722 to 27714. [2023-12-02 14:00:18,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27714 states, 17438 states have (on average 1.272565661199679) internal successors, (22191), 17594 states have internal predecessors, (22191), 8861 states have call successors, (8861), 1321 states have call predecessors, (8861), 1414 states have return successors, (9547), 8930 states have call predecessors, (9547), 8860 states have call successors, (9547) [2023-12-02 14:00:18,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27714 states to 27714 states and 40599 transitions. [2023-12-02 14:00:18,995 INFO L78 Accepts]: Start accepts. Automaton has 27714 states and 40599 transitions. Word has length 743 [2023-12-02 14:00:18,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:00:18,996 INFO L495 AbstractCegarLoop]: Abstraction has 27714 states and 40599 transitions. [2023-12-02 14:00:18,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 3 states have call successors, (109), 2 states have call predecessors, (109), 3 states have return successors, (108), 4 states have call predecessors, (108), 3 states have call successors, (108) [2023-12-02 14:00:18,996 INFO L276 IsEmpty]: Start isEmpty. Operand 27714 states and 40599 transitions. [2023-12-02 14:00:19,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2023-12-02 14:00:19,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:00:19,045 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 15, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:00:19,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 14:00:19,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 14:00:19,245 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:00:19,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:00:19,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1764839448, now seen corresponding path program 1 times [2023-12-02 14:00:19,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:00:19,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385038963] [2023-12-02 14:00:19,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:00:19,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:00:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:00:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1644 trivial. 0 not checked. [2023-12-02 14:00:21,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:00:21,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385038963] [2023-12-02 14:00:21,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385038963] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:00:21,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268660033] [2023-12-02 14:00:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:00:21,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:00:21,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:00:21,489 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:00:21,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:00:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:00:24,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 9162 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 14:00:24,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:00:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2023-12-02 14:00:24,266 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:00:24,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268660033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:00:24,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:00:24,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-12-02 14:00:24,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855114998] [2023-12-02 14:00:24,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:00:24,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:00:24,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:00:24,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:00:24,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:00:24,269 INFO L87 Difference]: Start difference. First operand 27714 states and 40599 transitions. Second operand has 7 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (108), 2 states have call predecessors, (108), 3 states have return successors, (107), 5 states have call predecessors, (107), 4 states have call successors, (107) [2023-12-02 14:00:28,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:30,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:33,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:34,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:36,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:38,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:42,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:51,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:56,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:00:56,342 INFO L93 Difference]: Finished difference Result 56843 states and 83528 transitions. [2023-12-02 14:00:56,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:00:56,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (108), 2 states have call predecessors, (108), 3 states have return successors, (107), 5 states have call predecessors, (107), 4 states have call successors, (107) Word has length 741 [2023-12-02 14:00:56,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:00:56,446 INFO L225 Difference]: With dead ends: 56843 [2023-12-02 14:00:56,446 INFO L226 Difference]: Without dead ends: 29150 [2023-12-02 14:00:56,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-02 14:00:56,537 INFO L413 NwaCegarLoop]: 3670 mSDtfsCounter, 65 mSDsluCounter, 18209 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 21879 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:00:56,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 21879 Invalid, 1932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 1917 Invalid, 3 Unknown, 0 Unchecked, 31.0s Time] [2023-12-02 14:00:56,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29150 states. [2023-12-02 14:00:58,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29150 to 27774. [2023-12-02 14:00:58,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27774 states, 17486 states have (on average 1.2718174539631706) internal successors, (22239), 17630 states have internal predecessors, (22239), 8873 states have call successors, (8873), 1321 states have call predecessors, (8873), 1414 states have return successors, (9559), 8954 states have call predecessors, (9559), 8872 states have call successors, (9559) [2023-12-02 14:00:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27774 states to 27774 states and 40671 transitions. [2023-12-02 14:00:58,904 INFO L78 Accepts]: Start accepts. Automaton has 27774 states and 40671 transitions. Word has length 741 [2023-12-02 14:00:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:00:58,905 INFO L495 AbstractCegarLoop]: Abstraction has 27774 states and 40671 transitions. [2023-12-02 14:00:58,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (108), 2 states have call predecessors, (108), 3 states have return successors, (107), 5 states have call predecessors, (107), 4 states have call successors, (107) [2023-12-02 14:00:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 27774 states and 40671 transitions. [2023-12-02 14:00:58,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-12-02 14:00:58,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:00:58,957 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 15, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:00:58,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 14:00:59,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 14:00:59,158 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:00:59,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:00:59,159 INFO L85 PathProgramCache]: Analyzing trace with hash -786733739, now seen corresponding path program 1 times [2023-12-02 14:00:59,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:00:59,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217448771] [2023-12-02 14:00:59,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:00:59,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:00:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:01:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1674 trivial. 0 not checked. [2023-12-02 14:01:01,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:01:01,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217448771] [2023-12-02 14:01:01,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217448771] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:01:01,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904169814] [2023-12-02 14:01:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:01:01,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:01:01,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:01:01,294 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:01:01,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 14:01:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:01:04,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 9367 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 14:01:04,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2023-12-02 14:01:05,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:01:05,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904169814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:01:05,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:01:05,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2023-12-02 14:01:05,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568559748] [2023-12-02 14:01:05,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:01:05,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:01:05,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:01:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:01:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-02 14:01:05,200 INFO L87 Difference]: Start difference. First operand 27774 states and 40671 transitions. Second operand has 6 states, 6 states have (on average 44.0) internal successors, (264), 5 states have internal predecessors, (264), 3 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (107), 3 states have call predecessors, (107), 2 states have call successors, (107) [2023-12-02 14:01:09,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:11,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:13,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:15,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:17,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:19,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:21,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:31,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:36,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:42,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:44,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:46,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:48,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:50,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:52,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:58,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:02:00,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:02:02,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:02:13,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:02:15,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:02:16,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:02:16,217 INFO L93 Difference]: Finished difference Result 83365 states and 122049 transitions. [2023-12-02 14:02:16,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:02:16,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 44.0) internal successors, (264), 5 states have internal predecessors, (264), 3 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (107), 3 states have call predecessors, (107), 2 states have call successors, (107) Word has length 763 [2023-12-02 14:02:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:02:16,491 INFO L225 Difference]: With dead ends: 83365 [2023-12-02 14:02:16,491 INFO L226 Difference]: Without dead ends: 83360 [2023-12-02 14:02:16,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:02:16,519 INFO L413 NwaCegarLoop]: 9331 mSDtfsCounter, 7214 mSDsluCounter, 12552 mSDsCounter, 0 mSdLazyCounter, 11255 mSolverCounterSat, 15 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7214 SdHoareTripleChecker+Valid, 21883 SdHoareTripleChecker+Invalid, 11287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11255 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:02:16,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7214 Valid, 21883 Invalid, 11287 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 11255 Invalid, 17 Unknown, 0 Unchecked, 68.0s Time] [2023-12-02 14:02:16,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83360 states. [2023-12-02 14:02:21,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83360 to 83262. [2023-12-02 14:02:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83262 states, 52416 states have (on average 1.271978021978022) internal successors, (66672), 52874 states have internal predecessors, (66672), 26597 states have call successors, (26597), 3961 states have call predecessors, (26597), 4248 states have return successors, (28659), 26822 states have call predecessors, (28659), 26596 states have call successors, (28659) [2023-12-02 14:02:22,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83262 states to 83262 states and 121928 transitions. [2023-12-02 14:02:22,400 INFO L78 Accepts]: Start accepts. Automaton has 83262 states and 121928 transitions. Word has length 763 [2023-12-02 14:02:22,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:02:22,401 INFO L495 AbstractCegarLoop]: Abstraction has 83262 states and 121928 transitions. [2023-12-02 14:02:22,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.0) internal successors, (264), 5 states have internal predecessors, (264), 3 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (107), 3 states have call predecessors, (107), 2 states have call successors, (107) [2023-12-02 14:02:22,401 INFO L276 IsEmpty]: Start isEmpty. Operand 83262 states and 121928 transitions. [2023-12-02 14:02:22,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2023-12-02 14:02:22,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:02:22,488 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:02:22,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 14:02:22,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:02:22,690 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:02:22,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:02:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1088332930, now seen corresponding path program 1 times [2023-12-02 14:02:22,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:02:22,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815964824] [2023-12-02 14:02:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:02:22,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:02:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:02:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1398 trivial. 0 not checked. [2023-12-02 14:02:23,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:02:23,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815964824] [2023-12-02 14:02:23,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815964824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:02:23,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:02:23,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:02:23,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760143330] [2023-12-02 14:02:23,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:02:23,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:02:23,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:02:23,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:02:23,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:02:23,737 INFO L87 Difference]: Start difference. First operand 83262 states and 121928 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 2 states have call successors, (108), 2 states have call predecessors, (108), 1 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2023-12-02 14:02:26,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:02:28,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:02:36,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:02:37,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:02:39,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:02:43,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:02:43,696 INFO L93 Difference]: Finished difference Result 230682 states and 338190 transitions. [2023-12-02 14:02:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:02:43,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 2 states have call successors, (108), 2 states have call predecessors, (108), 1 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) Word has length 765 [2023-12-02 14:02:43,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:02:44,420 INFO L225 Difference]: With dead ends: 230682 [2023-12-02 14:02:44,420 INFO L226 Difference]: Without dead ends: 147441 [2023-12-02 14:02:44,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:02:44,717 INFO L413 NwaCegarLoop]: 6356 mSDtfsCounter, 3672 mSDsluCounter, 3506 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3672 SdHoareTripleChecker+Valid, 9862 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:02:44,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3672 Valid, 9862 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 861 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2023-12-02 14:02:44,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147441 states. [2023-12-02 14:02:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147441 to 147214. [2023-12-02 14:02:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147214 states, 92920 states have (on average 1.2770124838570813) internal successors, (118660), 93602 states have internal predecessors, (118660), 46955 states have call successors, (46955), 6943 states have call predecessors, (46955), 7338 states have return successors, (49852), 47232 states have call predecessors, (49852), 46954 states have call successors, (49852) [2023-12-02 14:02:56,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147214 states to 147214 states and 215467 transitions. [2023-12-02 14:02:56,485 INFO L78 Accepts]: Start accepts. Automaton has 147214 states and 215467 transitions. Word has length 765 [2023-12-02 14:02:56,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:02:56,485 INFO L495 AbstractCegarLoop]: Abstraction has 147214 states and 215467 transitions. [2023-12-02 14:02:56,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 2 states have call successors, (108), 2 states have call predecessors, (108), 1 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2023-12-02 14:02:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 147214 states and 215467 transitions. [2023-12-02 14:02:56,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-12-02 14:02:56,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:02:56,919 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 16, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:02:56,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 14:02:56,920 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:02:56,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:02:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash 699090568, now seen corresponding path program 1 times [2023-12-02 14:02:56,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:02:56,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821074477] [2023-12-02 14:02:56,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:02:56,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:02:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:02:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1738 trivial. 0 not checked. [2023-12-02 14:02:58,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:02:58,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821074477] [2023-12-02 14:02:58,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821074477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:02:58,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:02:58,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:02:58,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021577230] [2023-12-02 14:02:58,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:02:58,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:02:58,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:02:58,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:02:58,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:02:58,364 INFO L87 Difference]: Start difference. First operand 147214 states and 215467 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 3 states have call predecessors, (108), 3 states have call successors, (108) [2023-12-02 14:03:01,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:03:03,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:03:06,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:03:10,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:03:12,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:03:14,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:03:17,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:03:17,622 INFO L93 Difference]: Finished difference Result 226482 states and 331268 transitions. [2023-12-02 14:03:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:03:17,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 3 states have call predecessors, (108), 3 states have call successors, (108) Word has length 772 [2023-12-02 14:03:17,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:03:18,040 INFO L225 Difference]: With dead ends: 226482 [2023-12-02 14:03:18,040 INFO L226 Difference]: Without dead ends: 78395 [2023-12-02 14:03:18,380 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 [2023-12-02 14:03:18,380 INFO L413 NwaCegarLoop]: 4733 mSDtfsCounter, 3778 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3778 SdHoareTripleChecker+Valid, 6061 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:03:18,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3778 Valid, 6061 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 586 Invalid, 6 Unknown, 0 Unchecked, 15.4s Time] [2023-12-02 14:03:18,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78395 states. [2023-12-02 14:03:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78395 to 78097. [2023-12-02 14:03:24,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78097 states, 49269 states have (on average 1.2749802106801438) internal successors, (62817), 49640 states have internal predecessors, (62817), 24845 states have call successors, (24845), 3757 states have call predecessors, (24845), 3982 states have return successors, (26395), 25017 states have call predecessors, (26395), 24844 states have call successors, (26395) [2023-12-02 14:03:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78097 states to 78097 states and 114057 transitions. [2023-12-02 14:03:24,810 INFO L78 Accepts]: Start accepts. Automaton has 78097 states and 114057 transitions. Word has length 772 [2023-12-02 14:03:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:03:24,811 INFO L495 AbstractCegarLoop]: Abstraction has 78097 states and 114057 transitions. [2023-12-02 14:03:24,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 3 states have call predecessors, (108), 3 states have call successors, (108) [2023-12-02 14:03:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 78097 states and 114057 transitions. [2023-12-02 14:03:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-12-02 14:03:24,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:03:24,916 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 10, 10, 9, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:03:24,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 14:03:24,917 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:03:24,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:03:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1615709036, now seen corresponding path program 1 times [2023-12-02 14:03:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:03:24,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555223524] [2023-12-02 14:03:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:03:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:03:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:03:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1439 trivial. 0 not checked. [2023-12-02 14:03:26,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:03:26,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555223524] [2023-12-02 14:03:26,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555223524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:03:26,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:03:26,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:03:26,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263586918] [2023-12-02 14:03:26,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:03:26,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:03:26,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:03:26,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:03:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:03:26,150 INFO L87 Difference]: Start difference. First operand 78097 states and 114057 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-12-02 14:03:31,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:03:33,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:03:38,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:03:41,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:03:41,295 INFO L93 Difference]: Finished difference Result 151060 states and 220763 transitions. [2023-12-02 14:03:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:03:41,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 782 [2023-12-02 14:03:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:03:41,546 INFO L225 Difference]: With dead ends: 151060 [2023-12-02 14:03:41,546 INFO L226 Difference]: Without dead ends: 73001 [2023-12-02 14:03:41,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:03:41,746 INFO L413 NwaCegarLoop]: 3540 mSDtfsCounter, 0 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7077 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:03:41,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7077 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 618 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2023-12-02 14:03:41,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73001 states. [2023-12-02 14:03:46,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73001 to 72997. [2023-12-02 14:03:46,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72997 states, 46059 states have (on average 1.2754727631950324) internal successors, (58747), 46394 states have internal predecessors, (58747), 23297 states have call successors, (23297), 3443 states have call predecessors, (23297), 3640 states have return successors, (24705), 23441 states have call predecessors, (24705), 23296 states have call successors, (24705) [2023-12-02 14:03:47,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72997 states to 72997 states and 106749 transitions. [2023-12-02 14:03:47,226 INFO L78 Accepts]: Start accepts. Automaton has 72997 states and 106749 transitions. Word has length 782 [2023-12-02 14:03:47,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:03:47,227 INFO L495 AbstractCegarLoop]: Abstraction has 72997 states and 106749 transitions. [2023-12-02 14:03:47,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-12-02 14:03:47,227 INFO L276 IsEmpty]: Start isEmpty. Operand 72997 states and 106749 transitions. [2023-12-02 14:03:47,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-02 14:03:47,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:03:47,497 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 17, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:03:47,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 14:03:47,498 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:03:47,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:03:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2010172572, now seen corresponding path program 1 times [2023-12-02 14:03:47,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:03:47,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498207341] [2023-12-02 14:03:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:03:47,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:03:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:03:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2023-12-02 14:03:52,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:03:52,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498207341] [2023-12-02 14:03:52,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498207341] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:03:52,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063305060] [2023-12-02 14:03:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:03:52,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:03:52,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:03:52,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:03:52,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fd5de0-5ddb-4fe0-a874-eff0f9c9a947/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 14:03:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:03:55,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 9454 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 14:03:55,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:03:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 394 proven. 52 refuted. 0 times theorem prover too weak. 1381 trivial. 0 not checked. [2023-12-02 14:03:56,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:03:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2023-12-02 14:03:57,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063305060] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:03:57,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1449447161] [2023-12-02 14:03:57,691 INFO L159 IcfgInterpreter]: Started Sifa with 403 locations of interest [2023-12-02 14:03:57,691 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:03:57,696 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:03:57,701 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:03:57,702 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs