./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.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_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/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_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/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_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/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 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:08:18,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:08:18,747 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 13:08:18,752 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:08:18,753 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:08:18,774 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:08:18,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:08:18,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:08:18,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:08:18,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:08:18,777 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:08:18,778 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:08:18,778 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:08:18,779 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:08:18,779 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:08:18,780 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:08:18,780 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:08:18,781 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:08:18,781 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:08:18,782 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:08:18,782 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:08:18,783 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:08:18,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:08:18,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:08:18,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:08:18,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:08:18,786 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:08:18,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:08:18,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:08:18,787 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:08:18,788 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:08:18,788 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:08:18,788 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:08:18,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:08:18,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:08:18,789 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:08:18,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:08:18,790 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:08:18,790 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:08:18,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:08:18,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:08:18,791 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:08:18,791 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:08:18,791 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:08:18,791 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_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2023-12-02 13:08:19,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:08:19,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:08:19,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:08:19,064 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:08:19,064 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:08:19,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2023-12-02 13:08:21,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:08:22,238 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:08:22,238 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2023-12-02 13:08:22,275 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/bin/utaipan-verify-nQ1chXbOIh/data/d1ca7ab0a/6242ee7e8ac54f87b636a8ae91672977/FLAG28b50fee6 [2023-12-02 13:08:22,290 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/bin/utaipan-verify-nQ1chXbOIh/data/d1ca7ab0a/6242ee7e8ac54f87b636a8ae91672977 [2023-12-02 13:08:22,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:08:22,294 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:08:22,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:08:22,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:08:22,300 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:08:22,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:08:22" (1/1) ... [2023-12-02 13:08:22,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bfc86e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:22, skipping insertion in model container [2023-12-02 13:08:22,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:08:22" (1/1) ... [2023-12-02 13:08:22,455 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:08:23,302 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_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2023-12-02 13:08:24,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:08:24,227 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:08:24,355 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"); [3760] [2023-12-02 13:08:24,358 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"); [3794-3795] [2023-12-02 13:08:24,358 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"); [3798-3799] [2023-12-02 13:08:24,359 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"); [3802-3803] [2023-12-02 13:08:24,359 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"); [3806-3807] [2023-12-02 13:08:24,370 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_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2023-12-02 13:08:24,638 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)); [7459] [2023-12-02 13:08:24,638 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7466] [2023-12-02 13:08:24,639 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,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [7475-7476] [2023-12-02 13:08:24,639 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 %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [7492-7493] [2023-12-02 13:08:24,640 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)); [7507-7508] [2023-12-02 13:08:24,641 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [7521] [2023-12-02 13:08:24,641 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [7524] [2023-12-02 13:08:24,642 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [7527] [2023-12-02 13:08:24,642 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [7530] [2023-12-02 13:08:24,642 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& kernel_stack)); [7547] [2023-12-02 13:08:24,643 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7550] [2023-12-02 13:08:24,643 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7553] [2023-12-02 13:08:24,643 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7556] [2023-12-02 13:08:24,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:08:24,864 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:08:24,864 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:08:24,864 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:08:24,872 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:08:24,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:24 WrapperNode [2023-12-02 13:08:24,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:08:24,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:08:24,874 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:08:24,874 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:08:24,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:24" (1/1) ... [2023-12-02 13:08:24,950 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:24" (1/1) ... [2023-12-02 13:08:25,142 INFO L138 Inliner]: procedures = 371, calls = 3106, calls flagged for inlining = 200, calls inlined = 181, statements flattened = 6570 [2023-12-02 13:08:25,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:08:25,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:08:25,143 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:08:25,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:08:25,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:24" (1/1) ... [2023-12-02 13:08:25,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:24" (1/1) ... [2023-12-02 13:08:25,175 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:24" (1/1) ... [2023-12-02 13:08:25,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:24" (1/1) ... [2023-12-02 13:08:25,282 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:24" (1/1) ... [2023-12-02 13:08:25,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:24" (1/1) ... [2023-12-02 13:08:25,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:24" (1/1) ... [2023-12-02 13:08:25,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:24" (1/1) ... [2023-12-02 13:08:25,392 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:08:25,393 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:08:25,393 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:08:25,393 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:08:25,394 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:24" (1/1) ... [2023-12-02 13:08:25,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:08:25,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:25,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:08:25,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23f29969-d3c0-45b7-b3b8-e17ffb4ea608/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:08:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2023-12-02 13:08:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2023-12-02 13:08:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2023-12-02 13:08:25,463 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2023-12-02 13:08:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2023-12-02 13:08:25,463 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2023-12-02 13:08:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2023-12-02 13:08:25,463 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2023-12-02 13:08:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-12-02 13:08:25,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-12-02 13:08:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_14 [2023-12-02 13:08:25,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_14 [2023-12-02 13:08:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2023-12-02 13:08:25,464 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2023-12-02 13:08:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 13:08:25,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 13:08:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-12-02 13:08:25,464 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-12-02 13:08:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2023-12-02 13:08:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2023-12-02 13:08:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2023-12-02 13:08:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2023-12-02 13:08:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2023-12-02 13:08:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2023-12-02 13:08:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-12-02 13:08:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-12-02 13:08:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2023-12-02 13:08:25,466 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2023-12-02 13:08:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-12-02 13:08:25,466 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-12-02 13:08:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-12-02 13:08:25,466 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-12-02 13:08:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2023-12-02 13:08:25,466 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2023-12-02 13:08:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 13:08:25,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 13:08:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-12-02 13:08:25,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-12-02 13:08:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2023-12-02 13:08:25,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2023-12-02 13:08:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2023-12-02 13:08:25,467 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2023-12-02 13:08:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2023-12-02 13:08:25,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2023-12-02 13:08:25,468 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2023-12-02 13:08:25,468 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2023-12-02 13:08:25,468 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2023-12-02 13:08:25,468 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2023-12-02 13:08:25,468 INFO L130 BoogieDeclarations]: Found specification of procedure seq_printf [2023-12-02 13:08:25,468 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_printf [2023-12-02 13:08:25,468 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 13:08:25,469 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 13:08:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 13:08:25,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 13:08:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2023-12-02 13:08:25,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2023-12-02 13:08:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2023-12-02 13:08:25,518 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2023-12-02 13:08:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2023-12-02 13:08:25,519 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2023-12-02 13:08:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-12-02 13:08:25,519 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-12-02 13:08:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2023-12-02 13:08:25,519 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2023-12-02 13:08:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-12-02 13:08:25,519 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-12-02 13:08:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:08:25,519 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:08:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2023-12-02 13:08:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2023-12-02 13:08:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2023-12-02 13:08:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2023-12-02 13:08:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2023-12-02 13:08:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2023-12-02 13:08:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2023-12-02 13:08:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2023-12-02 13:08:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2023-12-02 13:08:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2023-12-02 13:08:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___2 [2023-12-02 13:08:25,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___2 [2023-12-02 13:08:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-12-02 13:08:25,521 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-12-02 13:08:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-12-02 13:08:25,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-12-02 13:08:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 13:08:25,521 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 13:08:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:08:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-12-02 13:08:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 13:08:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 13:08:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2023-12-02 13:08:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2023-12-02 13:08:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2023-12-02 13:08:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2023-12-02 13:08:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2023-12-02 13:08:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2023-12-02 13:08:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2023-12-02 13:08:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2023-12-02 13:08:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-12-02 13:08:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-12-02 13:08:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:08:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-12-02 13:08:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-12-02 13:08:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-12-02 13:08:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2023-12-02 13:08:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2023-12-02 13:08:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2023-12-02 13:08:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2023-12-02 13:08:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-12-02 13:08:25,524 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-12-02 13:08:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 13:08:25,524 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 13:08:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2023-12-02 13:08:25,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2023-12-02 13:08:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2023-12-02 13:08:25,524 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2023-12-02 13:08:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:08:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 13:08:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 13:08:25,525 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 13:08:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 13:08:25,525 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 13:08:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2023-12-02 13:08:25,525 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2023-12-02 13:08:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2023-12-02 13:08:25,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2023-12-02 13:08:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2023-12-02 13:08:25,525 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2023-12-02 13:08:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 13:08:25,526 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 13:08:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2023-12-02 13:08:25,526 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2023-12-02 13:08:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2023-12-02 13:08:25,526 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2023-12-02 13:08:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 13:08:25,526 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 13:08:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-12-02 13:08:25,526 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-12-02 13:08:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 13:08:25,527 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 13:08:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2023-12-02 13:08:25,527 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2023-12-02 13:08:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2023-12-02 13:08:25,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2023-12-02 13:08:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2023-12-02 13:08:25,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2023-12-02 13:08:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 13:08:25,527 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 13:08:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2023-12-02 13:08:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2023-12-02 13:08:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2023-12-02 13:08:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2023-12-02 13:08:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 13:08:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 13:08:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2023-12-02 13:08:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2023-12-02 13:08:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-12-02 13:08:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-12-02 13:08:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2023-12-02 13:08:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2023-12-02 13:08:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-12-02 13:08:25,529 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-12-02 13:08:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2023-12-02 13:08:25,529 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2023-12-02 13:08:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2023-12-02 13:08:25,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2023-12-02 13:08:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2023-12-02 13:08:25,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2023-12-02 13:08:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2023-12-02 13:08:25,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2023-12-02 13:08:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 13:08:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-12-02 13:08:25,530 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-12-02 13:08:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-12-02 13:08:25,530 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-12-02 13:08:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2023-12-02 13:08:25,530 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2023-12-02 13:08:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-12-02 13:08:25,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-12-02 13:08:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2023-12-02 13:08:25,530 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2023-12-02 13:08:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2023-12-02 13:08:25,531 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2023-12-02 13:08:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 13:08:25,531 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 13:08:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-12-02 13:08:25,531 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-12-02 13:08:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2023-12-02 13:08:25,531 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2023-12-02 13:08:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2023-12-02 13:08:25,531 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2023-12-02 13:08:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 13:08:25,531 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 13:08:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2023-12-02 13:08:25,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2023-12-02 13:08:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2023-12-02 13:08:25,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2023-12-02 13:08:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2023-12-02 13:08:25,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2023-12-02 13:08:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 13:08:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2023-12-02 13:08:25,532 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2023-12-02 13:08:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-12-02 13:08:25,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-12-02 13:08:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2023-12-02 13:08:25,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2023-12-02 13:08:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2023-12-02 13:08:25,533 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2023-12-02 13:08:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 13:08:25,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 13:08:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2023-12-02 13:08:25,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2023-12-02 13:08:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2023-12-02 13:08:25,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2023-12-02 13:08:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2023-12-02 13:08:25,534 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2023-12-02 13:08:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:08:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2023-12-02 13:08:25,534 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2023-12-02 13:08:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:08:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 13:08:25,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 13:08:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:08:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 13:08:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_18 [2023-12-02 13:08:25,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_18 [2023-12-02 13:08:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2023-12-02 13:08:25,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2023-12-02 13:08:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 13:08:25,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 13:08:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 13:08:25,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 13:08:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2023-12-02 13:08:25,535 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2023-12-02 13:08:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-12-02 13:08:25,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-12-02 13:08:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-12-02 13:08:25,536 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-12-02 13:08:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_22 [2023-12-02 13:08:25,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_22 [2023-12-02 13:08:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2023-12-02 13:08:25,536 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2023-12-02 13:08:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2023-12-02 13:08:25,536 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2023-12-02 13:08:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2023-12-02 13:08:25,536 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2023-12-02 13:08:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2023-12-02 13:08:25,537 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2023-12-02 13:08:25,537 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 13:08:25,537 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 13:08:25,537 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2023-12-02 13:08:25,537 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2023-12-02 13:08:25,537 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 13:08:25,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 13:08:25,537 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2023-12-02 13:08:25,537 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2023-12-02 13:08:25,537 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 13:08:25,537 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 13:08:25,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-12-02 13:08:25,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-12-02 13:08:25,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:08:25,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:08:25,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:08:25,538 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2023-12-02 13:08:25,538 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2023-12-02 13:08:25,538 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2023-12-02 13:08:25,538 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2023-12-02 13:08:25,538 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 13:08:25,539 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 13:08:26,309 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:08:26,313 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:08:26,731 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 13:08:27,490 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___2FINAL: assume true; [2023-12-02 13:08:34,006 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:08:35,046 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:08:35,046 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 13:08:35,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:08:35 BoogieIcfgContainer [2023-12-02 13:08:35,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:08:35,051 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:08:35,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:08:35,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:08:35,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:08:22" (1/3) ... [2023-12-02 13:08:35,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9be5c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:08:35, skipping insertion in model container [2023-12-02 13:08:35,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:24" (2/3) ... [2023-12-02 13:08:35,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9be5c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:08:35, skipping insertion in model container [2023-12-02 13:08:35,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:08:35" (3/3) ... [2023-12-02 13:08:35,056 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2023-12-02 13:08:35,073 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:08:35,073 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:08:35,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:08:35,156 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;@1d56ef33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:08:35,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:08:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 1827 states, 1171 states have (on average 1.3535439795046968) internal successors, (1585), 1212 states have internal predecessors, (1585), 529 states have call successors, (529), 127 states have call predecessors, (529), 125 states have return successors, (515), 504 states have call predecessors, (515), 515 states have call successors, (515) [2023-12-02 13:08:35,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 13:08:35,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:35,187 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:35,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:08:35,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:35,192 INFO L85 PathProgramCache]: Analyzing trace with hash -661210002, now seen corresponding path program 1 times [2023-12-02 13:08:35,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:35,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894116977] [2023-12-02 13:08:35,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:35,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 13:08:35,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:35,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894116977] [2023-12-02 13:08:35,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894116977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:35,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:35,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:08:35,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780120398] [2023-12-02 13:08:35,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:35,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:08:35,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:35,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:08:35,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:35,922 INFO L87 Difference]: Start difference. First operand has 1827 states, 1171 states have (on average 1.3535439795046968) internal successors, (1585), 1212 states have internal predecessors, (1585), 529 states have call successors, (529), 127 states have call predecessors, (529), 125 states have return successors, (515), 504 states have call predecessors, (515), 515 states have call successors, (515) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-02 13:08:39,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:40,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:40,817 INFO L93 Difference]: Finished difference Result 5359 states and 7923 transitions. [2023-12-02 13:08:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:08:40,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 65 [2023-12-02 13:08:40,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:40,860 INFO L225 Difference]: With dead ends: 5359 [2023-12-02 13:08:40,860 INFO L226 Difference]: Without dead ends: 3517 [2023-12-02 13:08:40,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:40,880 INFO L413 NwaCegarLoop]: 2376 mSDtfsCounter, 2525 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:40,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2525 Valid, 4679 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 513 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2023-12-02 13:08:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2023-12-02 13:08:41,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 3514. [2023-12-02 13:08:41,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3514 states, 2279 states have (on average 1.3422553751645458) internal successors, (3059), 2322 states have internal predecessors, (3059), 989 states have call successors, (989), 246 states have call predecessors, (989), 245 states have return successors, (982), 960 states have call predecessors, (982), 982 states have call successors, (982) [2023-12-02 13:08:41,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5030 transitions. [2023-12-02 13:08:41,119 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5030 transitions. Word has length 65 [2023-12-02 13:08:41,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:41,119 INFO L495 AbstractCegarLoop]: Abstraction has 3514 states and 5030 transitions. [2023-12-02 13:08:41,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-02 13:08:41,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5030 transitions. [2023-12-02 13:08:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 13:08:41,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:41,130 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:41,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:08:41,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:08:41,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:41,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1119324528, now seen corresponding path program 1 times [2023-12-02 13:08:41,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:41,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067763746] [2023-12-02 13:08:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:41,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 13:08:41,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:41,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067763746] [2023-12-02 13:08:41,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067763746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:41,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:41,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:08:41,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707238106] [2023-12-02 13:08:41,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:41,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:08:41,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:41,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:08:41,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:41,451 INFO L87 Difference]: Start difference. First operand 3514 states and 5030 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 13:08:44,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:47,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:49,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:49,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:49,952 INFO L93 Difference]: Finished difference Result 10150 states and 14474 transitions. [2023-12-02 13:08:49,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:08:49,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2023-12-02 13:08:49,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:50,010 INFO L225 Difference]: With dead ends: 10150 [2023-12-02 13:08:50,010 INFO L226 Difference]: Without dead ends: 6654 [2023-12-02 13:08:50,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:50,031 INFO L413 NwaCegarLoop]: 2348 mSDtfsCounter, 2296 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 4565 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:50,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2296 Valid, 4565 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 601 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2023-12-02 13:08:50,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6654 states. [2023-12-02 13:08:50,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6654 to 6621. [2023-12-02 13:08:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6621 states, 4281 states have (on average 1.3345012847465545) internal successors, (5713), 4362 states have internal predecessors, (5713), 1863 states have call successors, (1863), 477 states have call predecessors, (1863), 476 states have return successors, (1856), 1811 states have call predecessors, (1856), 1856 states have call successors, (1856) [2023-12-02 13:08:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6621 states to 6621 states and 9432 transitions. [2023-12-02 13:08:50,398 INFO L78 Accepts]: Start accepts. Automaton has 6621 states and 9432 transitions. Word has length 83 [2023-12-02 13:08:50,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:50,399 INFO L495 AbstractCegarLoop]: Abstraction has 6621 states and 9432 transitions. [2023-12-02 13:08:50,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 13:08:50,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6621 states and 9432 transitions. [2023-12-02 13:08:50,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 13:08:50,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:50,405 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:50,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:08:50,405 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:08:50,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:50,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1750468225, now seen corresponding path program 1 times [2023-12-02 13:08:50,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:50,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769651923] [2023-12-02 13:08:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:50,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 13:08:50,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:50,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769651923] [2023-12-02 13:08:50,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769651923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:50,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:50,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:08:50,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280751391] [2023-12-02 13:08:50,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:50,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:08:50,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:50,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:08:50,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:50,822 INFO L87 Difference]: Start difference. First operand 6621 states and 9432 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:08:53,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:56,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:58,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:59,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:59,253 INFO L93 Difference]: Finished difference Result 19589 states and 28146 transitions. [2023-12-02 13:08:59,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:08:59,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2023-12-02 13:08:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:59,365 INFO L225 Difference]: With dead ends: 19589 [2023-12-02 13:08:59,365 INFO L226 Difference]: Without dead ends: 12986 [2023-12-02 13:08:59,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:59,405 INFO L413 NwaCegarLoop]: 2638 mSDtfsCounter, 2565 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2565 SdHoareTripleChecker+Valid, 4934 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:59,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2565 Valid, 4934 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 565 Invalid, 3 Unknown, 0 Unchecked, 8.0s Time] [2023-12-02 13:08:59,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12986 states. [2023-12-02 13:09:00,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12986 to 12934. [2023-12-02 13:09:00,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12934 states, 8360 states have (on average 1.3322966507177034) internal successors, (11138), 8512 states have internal predecessors, (11138), 3637 states have call successors, (3637), 937 states have call predecessors, (3637), 936 states have return successors, (3906), 3542 states have call predecessors, (3906), 3630 states have call successors, (3906) [2023-12-02 13:09:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12934 states to 12934 states and 18681 transitions. [2023-12-02 13:09:00,195 INFO L78 Accepts]: Start accepts. Automaton has 12934 states and 18681 transitions. Word has length 87 [2023-12-02 13:09:00,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:00,195 INFO L495 AbstractCegarLoop]: Abstraction has 12934 states and 18681 transitions. [2023-12-02 13:09:00,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:09:00,196 INFO L276 IsEmpty]: Start isEmpty. Operand 12934 states and 18681 transitions. [2023-12-02 13:09:00,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 13:09:00,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:00,198 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:00,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 13:09:00,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:00,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:00,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1772110202, now seen corresponding path program 1 times [2023-12-02 13:09:00,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:00,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861890402] [2023-12-02 13:09:00,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:00,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 13:09:00,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861890402] [2023-12-02 13:09:00,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861890402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:00,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:09:00,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:09:00,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222935238] [2023-12-02 13:09:00,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:00,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:09:00,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:00,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:09:00,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:09:00,911 INFO L87 Difference]: Start difference. First operand 12934 states and 18681 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:09:03,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:06,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:08,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:09,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:09,563 INFO L93 Difference]: Finished difference Result 25476 states and 36952 transitions. [2023-12-02 13:09:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:09:09,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 84 [2023-12-02 13:09:09,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:09,696 INFO L225 Difference]: With dead ends: 25476 [2023-12-02 13:09:09,696 INFO L226 Difference]: Without dead ends: 25473 [2023-12-02 13:09:09,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:09:09,708 INFO L413 NwaCegarLoop]: 2335 mSDtfsCounter, 2477 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2477 SdHoareTripleChecker+Valid, 4648 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:09,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2477 Valid, 4648 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 516 Invalid, 3 Unknown, 0 Unchecked, 8.0s Time] [2023-12-02 13:09:09,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25473 states. [2023-12-02 13:09:11,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25473 to 25453. [2023-12-02 13:09:11,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25453 states, 16465 states have (on average 1.3332523534770726) internal successors, (21952), 16795 states have internal predecessors, (21952), 7147 states have call successors, (7147), 1849 states have call predecessors, (7147), 1840 states have return successors, (7828), 6924 states have call predecessors, (7828), 7140 states have call successors, (7828) [2023-12-02 13:09:11,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25453 states to 25453 states and 36927 transitions. [2023-12-02 13:09:11,264 INFO L78 Accepts]: Start accepts. Automaton has 25453 states and 36927 transitions. Word has length 84 [2023-12-02 13:09:11,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:11,265 INFO L495 AbstractCegarLoop]: Abstraction has 25453 states and 36927 transitions. [2023-12-02 13:09:11,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:09:11,266 INFO L276 IsEmpty]: Start isEmpty. Operand 25453 states and 36927 transitions. [2023-12-02 13:09:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 13:09:11,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:11,269 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:11,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 13:09:11,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:11,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:11,269 INFO L85 PathProgramCache]: Analyzing trace with hash -900731913, now seen corresponding path program 1 times [2023-12-02 13:09:11,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:11,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846425310] [2023-12-02 13:09:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:11,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 13:09:12,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:12,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846425310] [2023-12-02 13:09:12,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846425310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:12,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:09:12,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:09:12,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570604718] [2023-12-02 13:09:12,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:12,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:09:12,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:12,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:09:12,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:09:12,036 INFO L87 Difference]: Start difference. First operand 25453 states and 36927 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:09:15,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:17,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:19,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:21,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:21,509 INFO L93 Difference]: Finished difference Result 76274 states and 111478 transitions. [2023-12-02 13:09:21,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:09:21,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 85 [2023-12-02 13:09:21,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:21,810 INFO L225 Difference]: With dead ends: 76274 [2023-12-02 13:09:21,810 INFO L226 Difference]: Without dead ends: 50839 [2023-12-02 13:09:21,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:09:21,948 INFO L413 NwaCegarLoop]: 2384 mSDtfsCounter, 2540 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 4700 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:21,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2540 Valid, 4700 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 510 Invalid, 3 Unknown, 0 Unchecked, 7.9s Time] [2023-12-02 13:09:21,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50839 states. [2023-12-02 13:09:24,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50839 to 50812. [2023-12-02 13:09:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50812 states, 32868 states have (on average 1.3332724838748935) internal successors, (43822), 33538 states have internal predecessors, (43822), 14263 states have call successors, (14263), 3697 states have call predecessors, (14263), 3680 states have return successors, (16040), 13808 states have call predecessors, (16040), 14256 states have call successors, (16040) [2023-12-02 13:09:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50812 states to 50812 states and 74125 transitions. [2023-12-02 13:09:24,636 INFO L78 Accepts]: Start accepts. Automaton has 50812 states and 74125 transitions. Word has length 85 [2023-12-02 13:09:24,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:24,636 INFO L495 AbstractCegarLoop]: Abstraction has 50812 states and 74125 transitions. [2023-12-02 13:09:24,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:09:24,637 INFO L276 IsEmpty]: Start isEmpty. Operand 50812 states and 74125 transitions. [2023-12-02 13:09:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 13:09:24,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:24,640 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:24,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 13:09:24,640 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:24,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:24,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2140513309, now seen corresponding path program 1 times [2023-12-02 13:09:24,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:24,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657277347] [2023-12-02 13:09:24,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:24,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 13:09:25,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:25,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657277347] [2023-12-02 13:09:25,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657277347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:25,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:09:25,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:09:25,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208217185] [2023-12-02 13:09:25,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:25,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:09:25,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:25,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:09:25,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:09:25,125 INFO L87 Difference]: Start difference. First operand 50812 states and 74125 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:09:27,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:29,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:31,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:34,985 INFO L93 Difference]: Finished difference Result 75716 states and 112731 transitions. [2023-12-02 13:09:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:09:34,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 86 [2023-12-02 13:09:34,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:35,330 INFO L225 Difference]: With dead ends: 75716 [2023-12-02 13:09:35,331 INFO L226 Difference]: Without dead ends: 75713 [2023-12-02 13:09:35,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:09:35,361 INFO L413 NwaCegarLoop]: 2724 mSDtfsCounter, 2488 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 5121 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:35,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2488 Valid, 5121 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 529 Invalid, 3 Unknown, 0 Unchecked, 7.2s Time] [2023-12-02 13:09:35,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75713 states. [2023-12-02 13:09:38,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75713 to 75628. [2023-12-02 13:09:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75628 states, 48936 states have (on average 1.3352337747261729) internal successors, (65341), 50074 states have internal predecessors, (65341), 21235 states have call successors, (21235), 5545 states have call predecessors, (21235), 5456 states have return successors, (26052), 20340 states have call predecessors, (26052), 21228 states have call successors, (26052) [2023-12-02 13:09:38,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75628 states to 75628 states and 112628 transitions. [2023-12-02 13:09:38,797 INFO L78 Accepts]: Start accepts. Automaton has 75628 states and 112628 transitions. Word has length 86 [2023-12-02 13:09:38,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:38,798 INFO L495 AbstractCegarLoop]: Abstraction has 75628 states and 112628 transitions. [2023-12-02 13:09:38,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:09:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 75628 states and 112628 transitions. [2023-12-02 13:09:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 13:09:38,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:38,801 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:38,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 13:09:38,801 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:38,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:38,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1929839546, now seen corresponding path program 1 times [2023-12-02 13:09:38,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:38,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453177181] [2023-12-02 13:09:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:38,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 13:09:38,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:38,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453177181] [2023-12-02 13:09:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453177181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:38,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:09:38,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:09:38,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063371324] [2023-12-02 13:09:38,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:38,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:09:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:09:38,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:09:38,993 INFO L87 Difference]: Start difference. First operand 75628 states and 112628 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:09:42,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:44,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:46,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:51,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:51,619 INFO L93 Difference]: Finished difference Result 166331 states and 249758 transitions. [2023-12-02 13:09:51,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:09:51,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2023-12-02 13:09:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:52,302 INFO L225 Difference]: With dead ends: 166331 [2023-12-02 13:09:52,302 INFO L226 Difference]: Without dead ends: 111617 [2023-12-02 13:09:52,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:09:52,657 INFO L413 NwaCegarLoop]: 2747 mSDtfsCounter, 2413 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:52,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2413 Valid, 5082 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 547 Invalid, 3 Unknown, 0 Unchecked, 8.0s Time] [2023-12-02 13:09:52,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111617 states. [2023-12-02 13:09:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111617 to 111492. [2023-12-02 13:09:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111492 states, 72043 states have (on average 1.3349666171591965) internal successors, (96175), 73807 states have internal predecessors, (96175), 31336 states have call successors, (31336), 8270 states have call predecessors, (31336), 8112 states have return successors, (39644), 29906 states have call predecessors, (39644), 31328 states have call successors, (39644) [2023-12-02 13:09:58,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111492 states to 111492 states and 167155 transitions. [2023-12-02 13:09:58,375 INFO L78 Accepts]: Start accepts. Automaton has 111492 states and 167155 transitions. Word has length 87 [2023-12-02 13:09:58,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:58,375 INFO L495 AbstractCegarLoop]: Abstraction has 111492 states and 167155 transitions. [2023-12-02 13:09:58,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:09:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 111492 states and 167155 transitions. [2023-12-02 13:09:58,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 13:09:58,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:58,378 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:58,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 13:09:58,378 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:58,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:58,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1314752704, now seen corresponding path program 1 times [2023-12-02 13:09:58,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:58,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68114971] [2023-12-02 13:09:58,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:58,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-02 13:09:58,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:58,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68114971] [2023-12-02 13:09:58,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68114971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:58,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:09:58,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:09:58,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868682776] [2023-12-02 13:09:58,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:58,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:09:58,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:58,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:09:58,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:09:58,725 INFO L87 Difference]: Start difference. First operand 111492 states and 167155 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:10:01,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:10:04,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:10:06,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:10:15,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:10:15,185 INFO L93 Difference]: Finished difference Result 332730 states and 498405 transitions. [2023-12-02 13:10:15,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:10:15,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2023-12-02 13:10:15,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:10:16,279 INFO L225 Difference]: With dead ends: 332730 [2023-12-02 13:10:16,279 INFO L226 Difference]: Without dead ends: 221256 [2023-12-02 13:10:16,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:10:16,805 INFO L413 NwaCegarLoop]: 2615 mSDtfsCounter, 2528 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2528 SdHoareTripleChecker+Valid, 4912 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:10:16,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2528 Valid, 4912 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 528 Invalid, 3 Unknown, 0 Unchecked, 7.4s Time] [2023-12-02 13:10:16,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221256 states. [2023-12-02 13:10:26,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221256 to 220968. [2023-12-02 13:10:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220968 states, 142687 states have (on average 1.3340458486056894) internal successors, (190351), 146227 states have internal predecessors, (190351), 62104 states have call successors, (62104), 16490 states have call predecessors, (62104), 16176 states have return successors, (78440), 59234 states have call predecessors, (78440), 62096 states have call successors, (78440) [2023-12-02 13:10:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220968 states to 220968 states and 330895 transitions. [2023-12-02 13:10:28,587 INFO L78 Accepts]: Start accepts. Automaton has 220968 states and 330895 transitions. Word has length 89 [2023-12-02 13:10:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:10:28,588 INFO L495 AbstractCegarLoop]: Abstraction has 220968 states and 330895 transitions. [2023-12-02 13:10:28,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:10:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 220968 states and 330895 transitions. [2023-12-02 13:10:28,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 13:10:28,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:10:28,591 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:10:28,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 13:10:28,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:10:28,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:10:28,592 INFO L85 PathProgramCache]: Analyzing trace with hash -306074944, now seen corresponding path program 1 times [2023-12-02 13:10:28,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:10:28,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998177920] [2023-12-02 13:10:28,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:10:28,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:10:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:10:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 13:10:28,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:10:28,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998177920] [2023-12-02 13:10:28,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998177920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:10:28,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:10:28,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:10:28,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665888919] [2023-12-02 13:10:28,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:10:28,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:10:28,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:10:28,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:10:28,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:10:28,834 INFO L87 Difference]: Start difference. First operand 220968 states and 330895 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:10:31,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:10:34,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:10:36,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:10:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:10:53,051 INFO L93 Difference]: Finished difference Result 441457 states and 661168 transitions. [2023-12-02 13:10:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:10:53,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 88 [2023-12-02 13:10:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:10:55,302 INFO L225 Difference]: With dead ends: 441457 [2023-12-02 13:10:55,302 INFO L226 Difference]: Without dead ends: 441215 [2023-12-02 13:10:55,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:10:55,492 INFO L413 NwaCegarLoop]: 2333 mSDtfsCounter, 2521 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2521 SdHoareTripleChecker+Valid, 4640 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:10:55,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2521 Valid, 4640 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 3 Unknown, 0 Unchecked, 7.7s Time] [2023-12-02 13:10:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441215 states. [2023-12-02 13:11:15,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441215 to 440978. [2023-12-02 13:11:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440978 states, 284745 states have (on average 1.334460657781524) internal successors, (379981), 291891 states have internal predecessors, (379981), 124000 states have call successors, (124000), 32858 states have call predecessors, (124000), 32232 states have return successors, (156680), 118196 states have call predecessors, (156680), 123992 states have call successors, (156680) [2023-12-02 13:11:20,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440978 states to 440978 states and 660661 transitions. [2023-12-02 13:11:20,286 INFO L78 Accepts]: Start accepts. Automaton has 440978 states and 660661 transitions. Word has length 88 [2023-12-02 13:11:20,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:11:20,287 INFO L495 AbstractCegarLoop]: Abstraction has 440978 states and 660661 transitions. [2023-12-02 13:11:20,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 13:11:20,287 INFO L276 IsEmpty]: Start isEmpty. Operand 440978 states and 660661 transitions. [2023-12-02 13:11:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-02 13:11:20,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:11:20,293 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:11:20,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 13:11:20,293 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:11:20,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:11:20,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1080276560, now seen corresponding path program 1 times [2023-12-02 13:11:20,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:11:20,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884947386] [2023-12-02 13:11:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:20,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:11:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:11:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 13:11:20,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:11:20,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884947386] [2023-12-02 13:11:20,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884947386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:11:20,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:11:20,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:11:20,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059742441] [2023-12-02 13:11:20,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:11:20,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:11:20,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:11:20,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:11:20,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:11:20,539 INFO L87 Difference]: Start difference. First operand 440978 states and 660661 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 13:11:23,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:11:25,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:11:27,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:12:07,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:12:07,587 INFO L93 Difference]: Finished difference Result 1266894 states and 1891789 transitions. [2023-12-02 13:12:07,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:12:07,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2023-12-02 13:12:07,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted.