./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.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_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/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_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/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_c697b885-6d1c-4733-a279-8b4a59c4f94d/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 2f349249e9e86997fa8ff3fec7fb7aa332cbfd0034f841eea19465e389dd90de --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:04:05,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:04:05,829 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 19:04:05,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:04:05,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:04:05,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:04:05,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:04:05,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:04:05,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:04:05,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:04:05,861 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:04:05,862 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:04:05,862 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:04:05,863 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:04:05,863 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:04:05,864 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:04:05,864 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:04:05,865 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:04:05,865 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:04:05,866 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:04:05,866 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:04:05,867 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:04:05,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:04:05,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:04:05,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:04:05,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:04:05,869 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:04:05,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:04:05,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:04:05,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:04:05,871 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:04:05,871 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:04:05,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:04:05,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:04:05,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:04:05,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:04:05,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:04:05,873 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:04:05,873 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:04:05,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:04:05,874 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:04:05,874 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:04:05,874 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:04:05,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:04:05,875 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_c697b885-6d1c-4733-a279-8b4a59c4f94d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f349249e9e86997fa8ff3fec7fb7aa332cbfd0034f841eea19465e389dd90de [2023-12-02 19:04:06,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:04:06,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:04:06,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:04:06,118 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:04:06,118 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:04:06,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2023-12-02 19:04:08,912 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:04:09,369 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:04:09,370 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2023-12-02 19:04:09,409 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh/data/8e7d3e20a/dca8d6ec8f8942e6a576fac0cfdbacec/FLAGa0a90e286 [2023-12-02 19:04:09,424 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh/data/8e7d3e20a/dca8d6ec8f8942e6a576fac0cfdbacec [2023-12-02 19:04:09,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:04:09,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:04:09,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:04:09,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:04:09,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:04:09,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:04:09" (1/1) ... [2023-12-02 19:04:09,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b00019b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:09, skipping insertion in model container [2023-12-02 19:04:09,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:04:09" (1/1) ... [2023-12-02 19:04:09,602 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:04:11,339 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_c697b885-6d1c-4733-a279-8b4a59c4f94d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i[281346,281359] [2023-12-02 19:04:11,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:04:11,439 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:04:11,505 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3818] [2023-12-02 19:04:11,506 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [3825] [2023-12-02 19:04:11,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [3833-3834] [2023-12-02 19:04:11,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [3848-3849] [2023-12-02 19:04:11,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsfl %1,%0": "=r" (r): "rm" (x), "0" (-1)); [3857] [2023-12-02 19:04:11,514 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; subl %2, %0; sete %1": "+m" (v->counter), "=qm" (c): "er" (i): "memory"); [4054-4055] [2023-12-02 19:04:11,515 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [4066-4067] [2023-12-02 19:04:11,515 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [4070-4071] [2023-12-02 19:04:11,516 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [4074-4075] [2023-12-02 19:04:11,516 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [4078-4079] [2023-12-02 19:04:11,520 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [4183] [2023-12-02 19:04:11,521 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [4190] [2023-12-02 19:04:11,566 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9566/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/oxu210hp-hcd.c"), "i" (398), "i" (12UL)); [4715-4716] [2023-12-02 19:04:11,578 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9566/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/oxu210hp-hcd.c"), "i" (626), "i" (12UL)); [5000-5001] [2023-12-02 19:04:11,588 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9566/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/oxu210hp-hcd.c"), "i" (824), "i" (12UL)); [5297-5298] [2023-12-02 19:04:11,590 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [5318] [2023-12-02 19:04:11,600 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [5537] [2023-12-02 19:04:11,601 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [5588] [2023-12-02 19:04:11,619 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6022] [2023-12-02 19:04:11,623 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6080] [2023-12-02 19:04:11,625 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6095] [2023-12-02 19:04:11,634 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9566/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/oxu210hp-hcd.c"), "i" (1711), "i" (12UL)); [6220-6221] [2023-12-02 19:04:11,635 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9566/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/oxu210hp-hcd.c"), "i" (1714), "i" (12UL)); [6227-6228] [2023-12-02 19:04:11,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6238] [2023-12-02 19:04:11,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6259] [2023-12-02 19:04:11,653 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6549] [2023-12-02 19:04:11,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6640] [2023-12-02 19:04:11,666 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9566/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/oxu210hp-hcd.c"), "i" (2227), "i" (12UL)); [6856-6857] [2023-12-02 19:04:11,807 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_c697b885-6d1c-4733-a279-8b4a59c4f94d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i[281346,281359] [2023-12-02 19:04:11,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:04:11,863 WARN L675 CHandler]: The function ldv_calloc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:04:11,863 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:04:11,863 WARN L675 CHandler]: The function __bad_unaligned_access_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:04:11,869 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:04:11,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:11 WrapperNode [2023-12-02 19:04:11,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:04:11,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:04:11,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:04:11,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:04:11,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:11" (1/1) ... [2023-12-02 19:04:11,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:11" (1/1) ... [2023-12-02 19:04:12,140 INFO L138 Inliner]: procedures = 272, calls = 3049, calls flagged for inlining = 111, calls inlined = 108, statements flattened = 8278 [2023-12-02 19:04:12,140 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:04:12,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:04:12,141 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:04:12,141 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:04:12,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:11" (1/1) ... [2023-12-02 19:04:12,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:11" (1/1) ... [2023-12-02 19:04:12,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:11" (1/1) ... [2023-12-02 19:04:12,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:11" (1/1) ... [2023-12-02 19:04:12,352 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:11" (1/1) ... [2023-12-02 19:04:12,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:11" (1/1) ... [2023-12-02 19:04:12,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:11" (1/1) ... [2023-12-02 19:04:12,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:11" (1/1) ... [2023-12-02 19:04:12,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:04:12,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:04:12,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:04:12,499 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:04:12,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:11" (1/1) ... [2023-12-02 19:04:12,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:04:12,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:04:12,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:04:12,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:04:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_reset [2023-12-02 19:04:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_reset [2023-12-02 19:04:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure end_unlink_async [2023-12-02 19:04:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure end_unlink_async [2023-12-02 19:04:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_status_buf [2023-12-02 19:04:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_status_buf [2023-12-02 19:04:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-12-02 19:04:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-12-02 19:04:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2023-12-02 19:04:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2023-12-02 19:04:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 19:04:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 19:04:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 19:04:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 19:04:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure scan_periodic [2023-12-02 19:04:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_periodic [2023-12-02 19:04:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 19:04:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 19:04:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-12-02 19:04:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-12-02 19:04:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-12-02 19:04:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-12-02 19:04:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 19:04:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 19:04:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_create [2023-12-02 19:04:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_create [2023-12-02 19:04:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_readl [2023-12-02 19:04:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_readl [2023-12-02 19:04:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_run [2023-12-02 19:04:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_run [2023-12-02 19:04:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 19:04:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 19:04:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_next_shadow [2023-12-02 19:04:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_next_shadow [2023-12-02 19:04:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure qh_put [2023-12-02 19:04:12,581 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_put [2023-12-02 19:04:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_irq [2023-12-02 19:04:12,581 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_irq [2023-12-02 19:04:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 19:04:12,581 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 19:04:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure scan_async [2023-12-02 19:04:12,582 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_async [2023-12-02 19:04:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2023-12-02 19:04:12,582 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2023-12-02 19:04:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 19:04:12,582 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 19:04:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_halt [2023-12-02 19:04:12,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_halt [2023-12-02 19:04:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_endpoint_disable [2023-12-02 19:04:12,582 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_endpoint_disable [2023-12-02 19:04:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2023-12-02 19:04:12,583 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2023-12-02 19:04:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 19:04:12,583 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 19:04:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-12-02 19:04:12,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-12-02 19:04:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-12-02 19:04:12,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-12-02 19:04:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_qtd_free [2023-12-02 19:04:12,584 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_qtd_free [2023-12-02 19:04:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:04:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 19:04:12,584 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 19:04:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_list_free [2023-12-02 19:04:12,584 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_list_free [2023-12-02 19:04:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:04:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_fill [2023-12-02 19:04:12,585 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_fill [2023-12-02 19:04:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-12-02 19:04:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-12-02 19:04:12,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-12-02 19:04:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 19:04:12,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 19:04:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_writel [2023-12-02 19:04:12,586 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_writel [2023-12-02 19:04:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 19:04:12,586 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 19:04:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_drv_shutdown [2023-12-02 19:04:12,586 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_drv_shutdown [2023-12-02 19:04:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2023-12-02 19:04:12,586 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2023-12-02 19:04:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_murb_alloc [2023-12-02 19:04:12,587 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_murb_alloc [2023-12-02 19:04:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:04:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 19:04:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_command_buf [2023-12-02 19:04:12,587 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_command_buf [2023-12-02 19:04:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_urb_enqueue [2023-12-02 19:04:12,588 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_urb_enqueue [2023-12-02 19:04:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hc_died [2023-12-02 19:04:12,588 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hc_died [2023-12-02 19:04:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_usecs [2023-12-02 19:04:12,588 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_usecs [2023-12-02 19:04:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure intr_deschedule [2023-12-02 19:04:12,588 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_deschedule [2023-12-02 19:04:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 19:04:12,589 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 19:04:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_buf_alloc [2023-12-02 19:04:12,589 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_buf_alloc [2023-12-02 19:04:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 19:04:12,589 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 19:04:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_hub_control [2023-12-02 19:04:12,589 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_hub_control [2023-12-02 19:04:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2023-12-02 19:04:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure qh_completions [2023-12-02 19:04:12,590 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_completions [2023-12-02 19:04:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 19:04:12,590 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 19:04:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_hcd [2023-12-02 19:04:12,590 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_hcd [2023-12-02 19:04:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-12-02 19:04:12,590 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-12-02 19:04:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 19:04:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_drv_probe [2023-12-02 19:04:12,591 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_drv_probe [2023-12-02 19:04:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-12-02 19:04:12,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-12-02 19:04:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure timer_action [2023-12-02 19:04:12,591 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_action [2023-12-02 19:04:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 19:04:12,592 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 19:04:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 19:04:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_get_frame [2023-12-02 19:04:12,592 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_get_frame [2023-12-02 19:04:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-12-02 19:04:12,592 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-12-02 19:04:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_stop [2023-12-02 19:04:12,593 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_stop [2023-12-02 19:04:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2023-12-02 19:04:12,593 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2023-12-02 19:04:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:04:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-12-02 19:04:12,593 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-12-02 19:04:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 19:04:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 19:04:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure qh_schedule [2023-12-02 19:04:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_schedule [2023-12-02 19:04:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure check_intr_schedule [2023-12-02 19:04:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure check_intr_schedule [2023-12-02 19:04:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure __oxu_urb_enqueue [2023-12-02 19:04:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __oxu_urb_enqueue [2023-12-02 19:04:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_drv_remove [2023-12-02 19:04:12,595 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_drv_remove [2023-12-02 19:04:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-12-02 19:04:12,595 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-12-02 19:04:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 19:04:12,595 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 19:04:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-12-02 19:04:12,595 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-12-02 19:04:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:04:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-12-02 19:04:12,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-12-02 19:04:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-12-02 19:04:12,596 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-12-02 19:04:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-12-02 19:04:12,596 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-12-02 19:04:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 19:04:12,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 19:04:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_work [2023-12-02 19:04:12,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_work [2023-12-02 19:04:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure qh_unlink_periodic [2023-12-02 19:04:12,597 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_unlink_periodic [2023-12-02 19:04:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 19:04:12,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 19:04:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2023-12-02 19:04:12,598 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2023-12-02 19:04:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:04:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-12-02 19:04:12,598 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-12-02 19:04:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2023-12-02 19:04:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_async [2023-12-02 19:04:12,598 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_async [2023-12-02 19:04:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_mem_cleanup [2023-12-02 19:04:12,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_mem_cleanup [2023-12-02 19:04:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_to_hcd [2023-12-02 19:04:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_to_hcd [2023-12-02 19:04:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 19:04:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 19:04:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-12-02 19:04:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-12-02 19:04:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:04:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_qh_alloc [2023-12-02 19:04:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_qh_alloc [2023-12-02 19:04:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_bus_suspend [2023-12-02 19:04:12,600 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_bus_suspend [2023-12-02 19:04:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure usb_calc_bus_time [2023-12-02 19:04:12,600 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_calc_bus_time [2023-12-02 19:04:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2023-12-02 19:04:12,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2023-12-02 19:04:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 19:04:12,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 19:04:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure qh_link_async [2023-12-02 19:04:12,601 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_link_async [2023-12-02 19:04:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:04:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_hub_status_data [2023-12-02 19:04:12,601 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_hub_status_data [2023-12-02 19:04:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_shutdown [2023-12-02 19:04:12,601 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_shutdown [2023-12-02 19:04:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure qh_urb_transaction [2023-12-02 19:04:12,601 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_urb_transaction [2023-12-02 19:04:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 19:04:12,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 19:04:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure qh_get [2023-12-02 19:04:12,602 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_get [2023-12-02 19:04:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-12-02 19:04:12,602 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-12-02 19:04:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_quiesce [2023-12-02 19:04:12,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_quiesce [2023-12-02 19:04:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure scnprintf [2023-12-02 19:04:12,602 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprintf [2023-12-02 19:04:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure timer_action_done [2023-12-02 19:04:12,603 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_action_done [2023-12-02 19:04:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-12-02 19:04:12,603 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-12-02 19:04:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-12-02 19:04:12,603 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-12-02 19:04:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure device_may_wakeup [2023-12-02 19:04:12,603 INFO L138 BoogieDeclarations]: Found implementation of procedure device_may_wakeup [2023-12-02 19:04:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure usb_remove_hcd [2023-12-02 19:04:12,603 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_remove_hcd [2023-12-02 19:04:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_murb_free [2023-12-02 19:04:12,604 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_murb_free [2023-12-02 19:04:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_urb_done [2023-12-02 19:04:12,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_urb_done [2023-12-02 19:04:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2023-12-02 19:04:12,604 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2023-12-02 19:04:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure handshake [2023-12-02 19:04:12,604 INFO L138 BoogieDeclarations]: Found implementation of procedure handshake [2023-12-02 19:04:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-12-02 19:04:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-12-02 19:04:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure qh_refresh [2023-12-02 19:04:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_refresh [2023-12-02 19:04:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 19:04:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 19:04:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_async [2023-12-02 19:04:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_async [2023-12-02 19:04:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-12-02 19:04:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-12-02 19:04:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_bus_resume [2023-12-02 19:04:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_bus_resume [2023-12-02 19:04:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_urb_dequeue [2023-12-02 19:04:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_urb_dequeue [2023-12-02 19:04:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 19:04:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 19:04:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-12-02 19:04:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-12-02 19:04:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-12-02 19:04:12,607 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-12-02 19:04:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-12-02 19:04:12,607 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-12-02 19:04:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure qh_append_tds [2023-12-02 19:04:12,607 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_append_tds [2023-12-02 19:04:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_remove [2023-12-02 19:04:12,607 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_remove [2023-12-02 19:04:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:04:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_qtd_alloc [2023-12-02 19:04:12,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_qtd_alloc [2023-12-02 19:04:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_oxu [2023-12-02 19:04:12,608 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_oxu [2023-12-02 19:04:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_reset [2023-12-02 19:04:12,608 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_reset [2023-12-02 19:04:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:04:12,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:04:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 19:04:12,609 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 19:04:13,428 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:04:13,490 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:04:14,000 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 19:04:22,175 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:04:26,679 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:04:26,679 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 19:04:26,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:04:26 BoogieIcfgContainer [2023-12-02 19:04:26,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:04:26,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:04:26,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:04:26,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:04:26,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:04:09" (1/3) ... [2023-12-02 19:04:26,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d87cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:04:26, skipping insertion in model container [2023-12-02 19:04:26,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:11" (2/3) ... [2023-12-02 19:04:26,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d87cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:04:26, skipping insertion in model container [2023-12-02 19:04:26,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:04:26" (3/3) ... [2023-12-02 19:04:26,693 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2023-12-02 19:04:26,714 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:04:26,714 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:04:26,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:04:26,830 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;@16d8de26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:04:26,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:04:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 2342 states, 1456 states have (on average 1.3406593406593406) internal successors, (1952), 1516 states have internal predecessors, (1952), 762 states have call successors, (762), 123 states have call predecessors, (762), 122 states have return successors, (756), 746 states have call predecessors, (756), 756 states have call successors, (756) [2023-12-02 19:04:26,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-02 19:04:26,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:04:26,912 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-12-02 19:04:26,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:04:26,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:04:26,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1526882276, now seen corresponding path program 1 times [2023-12-02 19:04:26,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:04:26,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991779093] [2023-12-02 19:04:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:04:26,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:04:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:04:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2023-12-02 19:04:28,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:04:28,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991779093] [2023-12-02 19:04:28,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991779093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:04:28,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:04:28,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:04:28,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942277965] [2023-12-02 19:04:28,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:04:28,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:04:28,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:04:28,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:04:28,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:04:28,077 INFO L87 Difference]: Start difference. First operand has 2342 states, 1456 states have (on average 1.3406593406593406) internal successors, (1952), 1516 states have internal predecessors, (1952), 762 states have call successors, (762), 123 states have call predecessors, (762), 122 states have return successors, (756), 746 states have call predecessors, (756), 756 states have call successors, (756) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 19:04:31,477 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 19:04:35,023 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 19:04:35,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:04:35,466 INFO L93 Difference]: Finished difference Result 6820 states and 10099 transitions. [2023-12-02 19:04:35,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:04:35,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 244 [2023-12-02 19:04:35,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:04:35,520 INFO L225 Difference]: With dead ends: 6820 [2023-12-02 19:04:35,520 INFO L226 Difference]: Without dead ends: 4476 [2023-12-02 19:04:35,541 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 19:04:35,544 INFO L413 NwaCegarLoop]: 3123 mSDtfsCounter, 3256 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3256 SdHoareTripleChecker+Valid, 6089 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:04:35,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3256 Valid, 6089 Invalid, 789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 786 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2023-12-02 19:04:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2023-12-02 19:04:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 4472. [2023-12-02 19:04:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 2780 states have (on average 1.3280575539568344) internal successors, (3692), 2885 states have internal predecessors, (3692), 1450 states have call successors, (1450), 242 states have call predecessors, (1450), 241 states have return successors, (1449), 1428 states have call predecessors, (1449), 1449 states have call successors, (1449) [2023-12-02 19:04:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6591 transitions. [2023-12-02 19:04:35,969 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6591 transitions. Word has length 244 [2023-12-02 19:04:35,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:04:35,970 INFO L495 AbstractCegarLoop]: Abstraction has 4472 states and 6591 transitions. [2023-12-02 19:04:35,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 19:04:35,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6591 transitions. [2023-12-02 19:04:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-02 19:04:35,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:04:35,986 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-12-02 19:04:35,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:04:35,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:04:35,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:04:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1181372641, now seen corresponding path program 1 times [2023-12-02 19:04:35,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:04:35,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621409053] [2023-12-02 19:04:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:04:35,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:04:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:04:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2023-12-02 19:04:36,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:04:36,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621409053] [2023-12-02 19:04:36,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621409053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:04:36,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:04:36,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:04:36,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518717740] [2023-12-02 19:04:36,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:04:36,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:04:36,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:04:36,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:04:36,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:04:36,405 INFO L87 Difference]: Start difference. First operand 4472 states and 6591 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 19:04:37,852 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 19:04:42,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:44,722 WARN L539 Checker$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 19:04:46,995 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 19:04:47,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:04:47,643 INFO L93 Difference]: Finished difference Result 12286 states and 18038 transitions. [2023-12-02 19:04:47,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:04:47,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 248 [2023-12-02 19:04:47,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:04:47,700 INFO L225 Difference]: With dead ends: 12286 [2023-12-02 19:04:47,701 INFO L226 Difference]: Without dead ends: 7855 [2023-12-02 19:04:47,727 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 19:04:47,729 INFO L413 NwaCegarLoop]: 4527 mSDtfsCounter, 3210 mSDsluCounter, 2928 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3210 SdHoareTripleChecker+Valid, 7455 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:04:47,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3210 Valid, 7455 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 914 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2023-12-02 19:04:47,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2023-12-02 19:04:48,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7852. [2023-12-02 19:04:48,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7852 states, 4880 states have (on average 1.3247950819672132) internal successors, (6465), 5070 states have internal predecessors, (6465), 2519 states have call successors, (2519), 453 states have call predecessors, (2519), 452 states have return successors, (2518), 2477 states have call predecessors, (2518), 2518 states have call successors, (2518) [2023-12-02 19:04:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7852 states to 7852 states and 11502 transitions. [2023-12-02 19:04:48,262 INFO L78 Accepts]: Start accepts. Automaton has 7852 states and 11502 transitions. Word has length 248 [2023-12-02 19:04:48,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:04:48,263 INFO L495 AbstractCegarLoop]: Abstraction has 7852 states and 11502 transitions. [2023-12-02 19:04:48,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 19:04:48,264 INFO L276 IsEmpty]: Start isEmpty. Operand 7852 states and 11502 transitions. [2023-12-02 19:04:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-02 19:04:48,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:04:48,314 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2023-12-02 19:04:48,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:04:48,314 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:04:48,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:04:48,315 INFO L85 PathProgramCache]: Analyzing trace with hash -501148106, now seen corresponding path program 1 times [2023-12-02 19:04:48,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:04:48,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827174617] [2023-12-02 19:04:48,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:04:48,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:04:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:04:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-12-02 19:04:49,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:04:49,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827174617] [2023-12-02 19:04:49,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827174617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:04:49,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:04:49,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:04:49,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456628750] [2023-12-02 19:04:49,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:04:49,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:04:49,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:04:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:04:49,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:04:49,044 INFO L87 Difference]: Start difference. First operand 7852 states and 11502 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-02 19:04:50,189 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 19:04:52,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:55,997 WARN L539 Checker$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 19:04:58,004 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 19:04:58,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:04:58,533 INFO L93 Difference]: Finished difference Result 15726 states and 23056 transitions. [2023-12-02 19:04:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:04:58,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 316 [2023-12-02 19:04:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:04:58,580 INFO L225 Difference]: With dead ends: 15726 [2023-12-02 19:04:58,581 INFO L226 Difference]: Without dead ends: 7915 [2023-12-02 19:04:58,615 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 19:04:58,617 INFO L413 NwaCegarLoop]: 3105 mSDtfsCounter, 13 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 6188 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:04:58,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 6188 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 687 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2023-12-02 19:04:58,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7915 states. [2023-12-02 19:04:58,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7915 to 7861. [2023-12-02 19:04:58,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7861 states, 4889 states have (on average 1.3241971773368788) internal successors, (6474), 5079 states have internal predecessors, (6474), 2519 states have call successors, (2519), 453 states have call predecessors, (2519), 452 states have return successors, (2518), 2477 states have call predecessors, (2518), 2518 states have call successors, (2518) [2023-12-02 19:04:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 11511 transitions. [2023-12-02 19:04:58,951 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 11511 transitions. Word has length 316 [2023-12-02 19:04:58,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:04:58,953 INFO L495 AbstractCegarLoop]: Abstraction has 7861 states and 11511 transitions. [2023-12-02 19:04:58,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-02 19:04:58,954 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 11511 transitions. [2023-12-02 19:04:58,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-02 19:04:58,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:04:58,985 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2023-12-02 19:04:58,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:04:58,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:04:58,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:04:58,986 INFO L85 PathProgramCache]: Analyzing trace with hash -151176185, now seen corresponding path program 1 times [2023-12-02 19:04:58,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:04:58,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299127048] [2023-12-02 19:04:58,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:04:58,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:04:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:04:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2023-12-02 19:04:59,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:04:59,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299127048] [2023-12-02 19:04:59,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299127048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:04:59,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:04:59,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:04:59,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161307179] [2023-12-02 19:04:59,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:04:59,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:04:59,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:04:59,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:04:59,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:04:59,388 INFO L87 Difference]: Start difference. First operand 7861 states and 11511 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-12-02 19:05:00,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:02,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:07,809 WARN L539 Checker$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 19:05:10,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:12,035 WARN L539 Checker$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 19:05:12,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:05:12,709 INFO L93 Difference]: Finished difference Result 19931 states and 29222 transitions. [2023-12-02 19:05:12,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:05:12,710 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), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 316 [2023-12-02 19:05:12,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:05:12,797 INFO L225 Difference]: With dead ends: 19931 [2023-12-02 19:05:12,797 INFO L226 Difference]: Without dead ends: 12111 [2023-12-02 19:05:12,838 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 19:05:12,839 INFO L413 NwaCegarLoop]: 4442 mSDtfsCounter, 3239 mSDsluCounter, 2957 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 57 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3239 SdHoareTripleChecker+Valid, 7399 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:05:12,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3239 Valid, 7399 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 997 Invalid, 4 Unknown, 0 Unchecked, 12.8s Time] [2023-12-02 19:05:12,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12111 states. [2023-12-02 19:05:13,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12111 to 12107. [2023-12-02 19:05:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12107 states, 7556 states have (on average 1.320804658549497) internal successors, (9980), 7851 states have internal predecessors, (9980), 3859 states have call successors, (3859), 692 states have call predecessors, (3859), 691 states have return successors, (3858), 3796 states have call predecessors, (3858), 3858 states have call successors, (3858) [2023-12-02 19:05:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12107 states to 12107 states and 17697 transitions. [2023-12-02 19:05:13,440 INFO L78 Accepts]: Start accepts. Automaton has 12107 states and 17697 transitions. Word has length 316 [2023-12-02 19:05:13,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:05:13,441 INFO L495 AbstractCegarLoop]: Abstraction has 12107 states and 17697 transitions. [2023-12-02 19:05:13,441 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), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-12-02 19:05:13,442 INFO L276 IsEmpty]: Start isEmpty. Operand 12107 states and 17697 transitions. [2023-12-02 19:05:13,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-02 19:05:13,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:05:13,464 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2023-12-02 19:05:13,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:05:13,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:05:13,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:05:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash 400034708, now seen corresponding path program 1 times [2023-12-02 19:05:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:05:13,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818063734] [2023-12-02 19:05:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:05:13,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:05:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:05:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2023-12-02 19:05:13,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:05:13,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818063734] [2023-12-02 19:05:13,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818063734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:05:13,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:05:13,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:05:13,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144092065] [2023-12-02 19:05:13,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:05:13,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:05:13,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:05:13,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:05:13,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:05:13,886 INFO L87 Difference]: Start difference. First operand 12107 states and 17697 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-12-02 19:05:15,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:17,934 WARN L539 Checker$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 19:05:23,594 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 19:05:24,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:05:24,127 INFO L93 Difference]: Finished difference Result 30509 states and 44644 transitions. [2023-12-02 19:05:24,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:05:24,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 319 [2023-12-02 19:05:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:05:24,244 INFO L225 Difference]: With dead ends: 30509 [2023-12-02 19:05:24,244 INFO L226 Difference]: Without dead ends: 18443 [2023-12-02 19:05:24,300 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 19:05:24,301 INFO L413 NwaCegarLoop]: 4437 mSDtfsCounter, 3232 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 57 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3232 SdHoareTripleChecker+Valid, 7388 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:05:24,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3232 Valid, 7388 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 996 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2023-12-02 19:05:24,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18443 states. [2023-12-02 19:05:25,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18443 to 18440. [2023-12-02 19:05:25,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18440 states, 11550 states have (on average 1.3177489177489177) internal successors, (15220), 12001 states have internal predecessors, (15220), 5840 states have call successors, (5840), 1050 states have call predecessors, (5840), 1049 states have return successors, (5839), 5747 states have call predecessors, (5839), 5839 states have call successors, (5839) [2023-12-02 19:05:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18440 states to 18440 states and 26899 transitions. [2023-12-02 19:05:25,420 INFO L78 Accepts]: Start accepts. Automaton has 18440 states and 26899 transitions. Word has length 319 [2023-12-02 19:05:25,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:05:25,421 INFO L495 AbstractCegarLoop]: Abstraction has 18440 states and 26899 transitions. [2023-12-02 19:05:25,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-12-02 19:05:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 18440 states and 26899 transitions. [2023-12-02 19:05:25,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-12-02 19:05:25,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:05:25,441 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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 19:05:25,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:05:25,441 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:05:25,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:05:25,441 INFO L85 PathProgramCache]: Analyzing trace with hash 684131398, now seen corresponding path program 1 times [2023-12-02 19:05:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:05:25,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401082523] [2023-12-02 19:05:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:05:25,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:05:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:05:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2023-12-02 19:05:26,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:05:26,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401082523] [2023-12-02 19:05:26,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401082523] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:05:26,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715848608] [2023-12-02 19:05:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:05:26,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:05:26,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:05:26,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:05:26,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c697b885-6d1c-4733-a279-8b4a59c4f94d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:05:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:05:27,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 4390 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:05:27,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:05:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2023-12-02 19:05:27,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:05:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2023-12-02 19:05:27,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715848608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:05:27,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1640954448] [2023-12-02 19:05:27,751 INFO L159 IcfgInterpreter]: Started Sifa with 127 locations of interest [2023-12-02 19:05:27,751 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:05:27,755 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:05:27,760 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:05:27,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:13:35,893 WARN L293 SmtUtils]: Spent 5.28s on a formula simplification that was a NOOP. DAG size: 3541 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:13:41,312 WARN L293 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 3541 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:15:26,197 WARN L293 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 4356 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:15:26,252 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 178 for LOIs [2023-12-02 19:15:26,693 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 98 for LOIs [2023-12-02 19:15:27,313 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 127 for LOIs [2023-12-02 19:15:27,341 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 131 for LOIs [2023-12-02 19:15:27,380 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 178 for LOIs [2023-12-02 19:15:27,505 INFO L180 IcfgInterpreter]: Interpretation finished