./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.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_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/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_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/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_5aa16785-7dc4-4f15-92cb-188c415791cb/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 7a2974a33527a9392dca8d355734fee3e0faaae6e14749128119c28fd0f37e8f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:44:47,608 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:44:47,681 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 14:44:47,686 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:44:47,687 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:44:47,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:44:47,715 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:44:47,715 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:44:47,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:44:47,717 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:44:47,717 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:44:47,718 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:44:47,718 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:44:47,719 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:44:47,719 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:44:47,720 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:44:47,720 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:44:47,720 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:44:47,721 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:44:47,721 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:44:47,722 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:44:47,723 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:44:47,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:44:47,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:44:47,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:44:47,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:44:47,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:44:47,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:44:47,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:44:47,727 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:44:47,727 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:44:47,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:44:47,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:44:47,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:44:47,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:44:47,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:44:47,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:44:47,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:44:47,729 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:44:47,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:44:47,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:44:47,730 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:44:47,730 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:44:47,730 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:44:47,731 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_5aa16785-7dc4-4f15-92cb-188c415791cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a2974a33527a9392dca8d355734fee3e0faaae6e14749128119c28fd0f37e8f [2023-12-02 14:44:47,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:44:47,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:44:47,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:44:47,984 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:44:47,984 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:44:47,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2023-12-02 14:44:50,725 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:44:51,213 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:44:51,213 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2023-12-02 14:44:51,254 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/data/24994a5ff/baec64d2e4f84f439fe29d7f465ddd0b/FLAG76b7d1e2a [2023-12-02 14:44:51,265 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/data/24994a5ff/baec64d2e4f84f439fe29d7f465ddd0b [2023-12-02 14:44:51,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:44:51,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:44:51,269 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:44:51,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:44:51,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:44:51,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:44:51" (1/1) ... [2023-12-02 14:44:51,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7414526e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:51, skipping insertion in model container [2023-12-02 14:44:51,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:44:51" (1/1) ... [2023-12-02 14:44:51,443 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:44:53,775 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_5aa16785-7dc4-4f15-92cb-188c415791cb/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i[386204,386217] [2023-12-02 14:44:53,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:44:53,878 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:44:53,963 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"); [5726] [2023-12-02 14:44:53,965 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)); [5733] [2023-12-02 14:44:53,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [5741-5742] [2023-12-02 14:44:53,969 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5922] [2023-12-02 14:44:53,969 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5930] [2023-12-02 14:44:53,969 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outl %0, %w1": : "a" (value), "Nd" (port)); [5937] [2023-12-02 14:44:53,970 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inl %w1, %0": "=a" (value): "Nd" (port)); [5945] [2023-12-02 14:44:54,015 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [6193-6194] [2023-12-02 14:44:54,017 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [6222-6223] [2023-12-02 14:44:54,050 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6926] [2023-12-02 14:44:54,065 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7152] [2023-12-02 14:44:54,082 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7505] [2023-12-02 14:44:54,083 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7513] [2023-12-02 14:44:54,100 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7849] [2023-12-02 14:44:54,101 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7851] [2023-12-02 14:44:54,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [10163] [2023-12-02 14:44:54,385 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_5aa16785-7dc4-4f15-92cb-188c415791cb/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i[386204,386217] [2023-12-02 14:44:54,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:44:54,508 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:44:54,508 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:44:54,508 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:44:54,508 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:44:54,516 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:44:54,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:54 WrapperNode [2023-12-02 14:44:54,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:44:54,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:44:54,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:44:54,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:44:54,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:54" (1/1) ... [2023-12-02 14:44:54,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:54" (1/1) ... [2023-12-02 14:44:54,862 INFO L138 Inliner]: procedures = 333, calls = 3770, calls flagged for inlining = 139, calls inlined = 136, statements flattened = 8540 [2023-12-02 14:44:54,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:44:54,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:44:54,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:44:54,864 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:44:54,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:54" (1/1) ... [2023-12-02 14:44:54,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:54" (1/1) ... [2023-12-02 14:44:54,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:54" (1/1) ... [2023-12-02 14:44:54,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:54" (1/1) ... [2023-12-02 14:44:55,116 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:54" (1/1) ... [2023-12-02 14:44:55,195 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:54" (1/1) ... [2023-12-02 14:44:55,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:54" (1/1) ... [2023-12-02 14:44:55,303 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:54" (1/1) ... [2023-12-02 14:44:55,396 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:44:55,397 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:44:55,397 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:44:55,397 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:44:55,398 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:54" (1/1) ... [2023-12-02 14:44:55,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:44:55,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:44:55,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:44:55,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:44:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure disable_ast [2023-12-02 14:44:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_ast [2023-12-02 14:44:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 14:44:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 14:44:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2023-12-02 14:44:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2023-12-02 14:44:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 14:44:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 14:44:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 14:44:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 14:44:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_interrupt [2023-12-02 14:44:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_interrupt [2023-12-02 14:44:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 14:44:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 14:44:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure reset_init_sia [2023-12-02 14:44:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_init_sia [2023-12-02 14:44:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2023-12-02 14:44:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2023-12-02 14:44:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-12-02 14:44:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-12-02 14:44:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_alloc_rx_buff [2023-12-02 14:44:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_alloc_rx_buff [2023-12-02 14:44:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-12-02 14:44:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-12-02 14:44:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure test_for_100Mb [2023-12-02 14:44:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure test_for_100Mb [2023-12-02 14:44:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 14:44:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 14:44:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2023-12-02 14:44:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2023-12-02 14:44:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_put_cache [2023-12-02 14:44:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_put_cache [2023-12-02 14:44:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2023-12-02 14:44:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2023-12-02 14:44:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2023-12-02 14:44:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2023-12-02 14:44:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure load_packet [2023-12-02 14:44:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure load_packet [2023-12-02 14:44:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 14:44:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 14:44:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_mii [2023-12-02 14:44:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_mii [2023-12-02 14:44:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2023-12-02 14:44:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2023-12-02 14:44:55,536 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_switch_mac_port [2023-12-02 14:44:55,536 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_switch_mac_port [2023-12-02 14:44:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-12-02 14:44:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-12-02 14:44:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure srom_latch [2023-12-02 14:44:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_latch [2023-12-02 14:44:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure is_100_up [2023-12-02 14:44:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure is_100_up [2023-12-02 14:44:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2023-12-02 14:44:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2023-12-02 14:44:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 14:44:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 14:44:55,539 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ta [2023-12-02 14:44:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ta [2023-12-02 14:44:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2023-12-02 14:44:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2023-12-02 14:44:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 14:44:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 14:44:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 14:44:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 14:44:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2023-12-02 14:44:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2023-12-02 14:44:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2023-12-02 14:44:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2023-12-02 14:44:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 14:44:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 14:44:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure build_setup_frame [2023-12-02 14:44:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure build_setup_frame [2023-12-02 14:44:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2023-12-02 14:44:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2023-12-02 14:44:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure test_mii_reg [2023-12-02 14:44:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure test_mii_reg [2023-12-02 14:44:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2023-12-02 14:44:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2023-12-02 14:44:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_cache_state [2023-12-02 14:44:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_cache_state [2023-12-02 14:44:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-12-02 14:44:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-12-02 14:44:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:44:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-12-02 14:44:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_media [2023-12-02 14:44:55,545 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_media [2023-12-02 14:44:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2023-12-02 14:44:55,545 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2023-12-02 14:44:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 14:44:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2023-12-02 14:44:55,546 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2023-12-02 14:44:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2023-12-02 14:44:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2023-12-02 14:44:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure mii_rd [2023-12-02 14:44:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_rd [2023-12-02 14:44:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure DevicePresent [2023-12-02 14:44:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure DevicePresent [2023-12-02 14:44:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2023-12-02 14:44:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2023-12-02 14:44:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2023-12-02 14:44:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2023-12-02 14:44:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 14:44:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2023-12-02 14:44:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2023-12-02 14:44:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2023-12-02 14:44:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2023-12-02 14:44:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-12-02 14:44:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-12-02 14:44:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-12-02 14:44:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-12-02 14:44:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 14:44:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 14:44:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2023-12-02 14:44:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2023-12-02 14:44:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-12-02 14:44:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_sw_reset [2023-12-02 14:44:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_sw_reset [2023-12-02 14:44:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:44:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2023-12-02 14:44:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2023-12-02 14:44:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2023-12-02 14:44:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2023-12-02 14:44:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 14:44:55,553 INFO L130 BoogieDeclarations]: Found specification of procedure is_10_up [2023-12-02 14:44:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10_up [2023-12-02 14:44:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 14:44:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 14:44:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-12-02 14:44:55,558 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-12-02 14:44:55,559 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2023-12-02 14:44:55,559 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2023-12-02 14:44:55,559 INFO L130 BoogieDeclarations]: Found specification of procedure is_anc_capable [2023-12-02 14:44:55,560 INFO L138 BoogieDeclarations]: Found implementation of procedure is_anc_capable [2023-12-02 14:44:55,560 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2023-12-02 14:44:55,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2023-12-02 14:44:55,562 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2023-12-02 14:44:55,562 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2023-12-02 14:44:55,562 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2023-12-02 14:44:55,562 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2023-12-02 14:44:55,562 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 14:44:55,562 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 14:44:55,562 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-12-02 14:44:55,563 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-12-02 14:44:55,563 INFO L130 BoogieDeclarations]: Found specification of procedure is_spd_100 [2023-12-02 14:44:55,563 INFO L138 BoogieDeclarations]: Found implementation of procedure is_spd_100 [2023-12-02 14:44:55,563 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2023-12-02 14:44:55,563 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2023-12-02 14:44:55,563 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 14:44:55,563 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 14:44:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 14:44:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 14:44:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2023-12-02 14:44:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2023-12-02 14:44:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_queue_pkt [2023-12-02 14:44:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_queue_pkt [2023-12-02 14:44:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 14:44:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_mii [2023-12-02 14:44:55,565 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_mii [2023-12-02 14:44:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure test_media [2023-12-02 14:44:55,565 INFO L138 BoogieDeclarations]: Found implementation of procedure test_media [2023-12-02 14:44:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_rx_buffs [2023-12-02 14:44:55,565 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_rx_buffs [2023-12-02 14:44:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-12-02 14:44:55,566 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-12-02 14:44:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-12-02 14:44:55,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-12-02 14:44:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-12-02 14:44:55,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-12-02 14:44:55,567 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buffs [2023-12-02 14:44:55,567 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buffs [2023-12-02 14:44:55,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 14:44:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2023-12-02 14:44:55,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2023-12-02 14:44:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2023-12-02 14:44:55,568 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2023-12-02 14:44:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:44:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 14:44:55,568 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 14:44:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-12-02 14:44:55,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-12-02 14:44:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2023-12-02 14:44:55,569 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2023-12-02 14:44:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 14:44:55,569 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 14:44:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2023-12-02 14:44:55,570 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2023-12-02 14:44:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure ping_media [2023-12-02 14:44:55,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ping_media [2023-12-02 14:44:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-12-02 14:44:55,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-12-02 14:44:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-12-02 14:44:55,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-12-02 14:44:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2023-12-02 14:44:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2023-12-02 14:44:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:44:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure srom_exec [2023-12-02 14:44:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_exec [2023-12-02 14:44:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-12-02 14:44:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-12-02 14:44:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-12-02 14:44:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-12-02 14:44:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 14:44:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 14:44:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_tx [2023-12-02 14:44:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_tx [2023-12-02 14:44:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 14:44:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 14:44:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure gep_wr [2023-12-02 14:44:55,573 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_wr [2023-12-02 14:44:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2023-12-02 14:44:55,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2023-12-02 14:44:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure srom_rd [2023-12-02 14:44:55,573 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_rd [2023-12-02 14:44:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:44:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-12-02 14:44:55,574 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-12-02 14:44:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_srom [2023-12-02 14:44:55,574 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_srom [2023-12-02 14:44:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 14:44:55,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 14:44:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure SetMulticastFilter [2023-12-02 14:44:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMulticastFilter [2023-12-02 14:44:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-12-02 14:44:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-12-02 14:44:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:44:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ioctl [2023-12-02 14:44:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ioctl [2023-12-02 14:44:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_cache [2023-12-02 14:44:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_cache [2023-12-02 14:44:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 14:44:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 14:44:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 14:44:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-12-02 14:44:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-12-02 14:44:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_srom [2023-12-02 14:44:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_srom [2023-12-02 14:44:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2023-12-02 14:44:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2023-12-02 14:44:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2023-12-02 14:44:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2023-12-02 14:44:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 14:44:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 14:44:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure mii_swap [2023-12-02 14:44:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_swap [2023-12-02 14:44:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2023-12-02 14:44:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2023-12-02 14:44:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_mii [2023-12-02 14:44:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_mii [2023-12-02 14:44:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2023-12-02 14:44:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2023-12-02 14:44:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure gep_rd [2023-12-02 14:44:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_rd [2023-12-02 14:44:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure mii_address [2023-12-02 14:44:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_address [2023-12-02 14:44:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_reset_phy [2023-12-02 14:44:55,585 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_reset_phy [2023-12-02 14:44:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_putb_cache [2023-12-02 14:44:55,585 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_putb_cache [2023-12-02 14:44:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buff [2023-12-02 14:44:55,585 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buff [2023-12-02 14:44:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_setup_intr [2023-12-02 14:44:55,586 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_setup_intr [2023-12-02 14:44:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2023-12-02 14:44:55,586 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2023-12-02 14:44:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_stats [2023-12-02 14:44:55,592 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_stats [2023-12-02 14:44:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_save_skbs [2023-12-02 14:44:55,592 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_save_skbs [2023-12-02 14:44:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2023-12-02 14:44:55,592 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2023-12-02 14:44:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-12-02 14:44:55,592 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-12-02 14:44:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-12-02 14:44:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-12-02 14:44:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure srom_map_media [2023-12-02 14:44:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_map_media [2023-12-02 14:44:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2023-12-02 14:44:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2023-12-02 14:44:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_close [2023-12-02 14:44:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_close [2023-12-02 14:44:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure yawn [2023-12-02 14:44:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure yawn [2023-12-02 14:44:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wdata [2023-12-02 14:44:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wdata [2023-12-02 14:44:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:44:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init_connection [2023-12-02 14:44:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init_connection [2023-12-02 14:44:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wr [2023-12-02 14:44:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wr [2023-12-02 14:44:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-12-02 14:44:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:44:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:44:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_state [2023-12-02 14:44:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_state [2023-12-02 14:44:56,708 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:44:56,714 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:44:57,046 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 14:45:06,355 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:45:13,854 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:45:13,854 INFO L309 CfgBuilder]: Removed 17 assume(true) statements. [2023-12-02 14:45:13,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:45:13 BoogieIcfgContainer [2023-12-02 14:45:13,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:45:13,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:45:13,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:45:13,863 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:45:13,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:44:51" (1/3) ... [2023-12-02 14:45:13,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a7479c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:45:13, skipping insertion in model container [2023-12-02 14:45:13,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:54" (2/3) ... [2023-12-02 14:45:13,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a7479c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:45:13, skipping insertion in model container [2023-12-02 14:45:13,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:45:13" (3/3) ... [2023-12-02 14:45:13,865 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2023-12-02 14:45:13,884 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:45:13,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:45:13,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:45:13,991 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;@17f16171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:45:13,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:45:14,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 2884 states, 1837 states have (on average 1.3418617310832879) internal successors, (2465), 1899 states have internal predecessors, (2465), 925 states have call successors, (925), 137 states have call predecessors, (925), 136 states have return successors, (917), 906 states have call predecessors, (917), 917 states have call successors, (917) [2023-12-02 14:45:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 14:45:14,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:45:14,025 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:45:14,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:45:14,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:45:14,031 INFO L85 PathProgramCache]: Analyzing trace with hash 753819613, now seen corresponding path program 1 times [2023-12-02 14:45:14,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:45:14,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706319939] [2023-12-02 14:45:14,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:14,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:45:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 14:45:15,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:45:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706319939] [2023-12-02 14:45:15,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706319939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:45:15,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:45:15,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:45:15,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55819698] [2023-12-02 14:45:15,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:45:15,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:45:15,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:45:15,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:45:15,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:45:15,122 INFO L87 Difference]: Start difference. First operand has 2884 states, 1837 states have (on average 1.3418617310832879) internal successors, (2465), 1899 states have internal predecessors, (2465), 925 states have call successors, (925), 137 states have call predecessors, (925), 136 states have return successors, (917), 906 states have call predecessors, (917), 917 states have call successors, (917) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 14:45:17,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:45:24,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:45:24,235 INFO L93 Difference]: Finished difference Result 8295 states and 12639 transitions. [2023-12-02 14:45:24,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:45:24,237 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), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2023-12-02 14:45:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:45:24,303 INFO L225 Difference]: With dead ends: 8295 [2023-12-02 14:45:24,303 INFO L226 Difference]: Without dead ends: 5403 [2023-12-02 14:45:24,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:45:24,345 INFO L413 NwaCegarLoop]: 3799 mSDtfsCounter, 3851 mSDsluCounter, 3486 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3851 SdHoareTripleChecker+Valid, 7285 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:45:24,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3851 Valid, 7285 Invalid, 1380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1372 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2023-12-02 14:45:24,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2023-12-02 14:45:24,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 5397. [2023-12-02 14:45:24,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5397 states, 3416 states have (on average 1.3328454332552693) internal successors, (4553), 3494 states have internal predecessors, (4553), 1719 states have call successors, (1719), 262 states have call predecessors, (1719), 261 states have return successors, (1718), 1695 states have call predecessors, (1718), 1718 states have call successors, (1718) [2023-12-02 14:45:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 7990 transitions. [2023-12-02 14:45:24,830 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 7990 transitions. Word has length 102 [2023-12-02 14:45:24,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:45:24,831 INFO L495 AbstractCegarLoop]: Abstraction has 5397 states and 7990 transitions. [2023-12-02 14:45:24,831 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), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 14:45:24,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 7990 transitions. [2023-12-02 14:45:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-02 14:45:24,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:45:24,839 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:45:24,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:45:24,839 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:45:24,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:45:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1669658799, now seen corresponding path program 1 times [2023-12-02 14:45:24,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:45:24,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504185440] [2023-12-02 14:45:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:24,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:45:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:45:25,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:45:25,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504185440] [2023-12-02 14:45:25,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504185440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:45:25,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:45:25,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:45:25,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750587959] [2023-12-02 14:45:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:45:25,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:45:25,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:45:25,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:45:25,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:45:25,839 INFO L87 Difference]: Start difference. First operand 5397 states and 7990 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:45:27,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:45:29,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:45:31,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:45:43,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:45:43,585 INFO L93 Difference]: Finished difference Result 16179 states and 23958 transitions. [2023-12-02 14:45:43,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:45:43,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 136 [2023-12-02 14:45:43,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:45:43,686 INFO L225 Difference]: With dead ends: 16179 [2023-12-02 14:45:43,686 INFO L226 Difference]: Without dead ends: 10799 [2023-12-02 14:45:43,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:45:43,719 INFO L413 NwaCegarLoop]: 3883 mSDtfsCounter, 4175 mSDsluCounter, 11284 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4179 SdHoareTripleChecker+Valid, 15167 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:45:43,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4179 Valid, 15167 Invalid, 2711 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2706 Invalid, 3 Unknown, 0 Unchecked, 17.1s Time] [2023-12-02 14:45:43,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10799 states. [2023-12-02 14:45:44,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10799 to 10776. [2023-12-02 14:45:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10776 states, 6822 states have (on average 1.3333333333333333) internal successors, (9096), 6986 states have internal predecessors, (9096), 3430 states have call successors, (3430), 524 states have call predecessors, (3430), 523 states have return successors, (3429), 3375 states have call predecessors, (3429), 3429 states have call successors, (3429) [2023-12-02 14:45:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10776 states to 10776 states and 15955 transitions. [2023-12-02 14:45:44,422 INFO L78 Accepts]: Start accepts. Automaton has 10776 states and 15955 transitions. Word has length 136 [2023-12-02 14:45:44,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:45:44,423 INFO L495 AbstractCegarLoop]: Abstraction has 10776 states and 15955 transitions. [2023-12-02 14:45:44,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:45:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 10776 states and 15955 transitions. [2023-12-02 14:45:44,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-02 14:45:44,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:45:44,428 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:45:44,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:45:44,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:45:44,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:45:44,429 INFO L85 PathProgramCache]: Analyzing trace with hash -903925546, now seen corresponding path program 1 times [2023-12-02 14:45:44,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:45:44,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947567083] [2023-12-02 14:45:44,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:44,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:45:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:45,170 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:45:45,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:45:45,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947567083] [2023-12-02 14:45:45,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947567083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:45:45,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:45:45,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:45:45,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609006742] [2023-12-02 14:45:45,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:45:45,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:45:45,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:45:45,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:45:45,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:45:45,174 INFO L87 Difference]: Start difference. First operand 10776 states and 15955 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:45:47,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:45:49,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:45:51,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:45:53,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:46:02,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:46:02,956 INFO L93 Difference]: Finished difference Result 32334 states and 48177 transitions. [2023-12-02 14:46:02,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:46:02,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 133 [2023-12-02 14:46:02,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:46:03,126 INFO L225 Difference]: With dead ends: 32334 [2023-12-02 14:46:03,126 INFO L226 Difference]: Without dead ends: 21575 [2023-12-02 14:46:03,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:46:03,193 INFO L413 NwaCegarLoop]: 3883 mSDtfsCounter, 4174 mSDsluCounter, 11359 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4178 SdHoareTripleChecker+Valid, 15242 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:46:03,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4178 Valid, 15242 Invalid, 2713 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2707 Invalid, 3 Unknown, 0 Unchecked, 16.8s Time] [2023-12-02 14:46:03,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21575 states. [2023-12-02 14:46:04,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21575 to 21520. [2023-12-02 14:46:04,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21520 states, 13630 states have (on average 1.3336757153338223) internal successors, (18178), 13966 states have internal predecessors, (18178), 6844 states have call successors, (6844), 1046 states have call predecessors, (6844), 1045 states have return successors, (7133), 6719 states have call predecessors, (7133), 6843 states have call successors, (7133) [2023-12-02 14:46:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21520 states to 21520 states and 32155 transitions. [2023-12-02 14:46:04,966 INFO L78 Accepts]: Start accepts. Automaton has 21520 states and 32155 transitions. Word has length 133 [2023-12-02 14:46:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:46:04,966 INFO L495 AbstractCegarLoop]: Abstraction has 21520 states and 32155 transitions. [2023-12-02 14:46:04,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:46:04,967 INFO L276 IsEmpty]: Start isEmpty. Operand 21520 states and 32155 transitions. [2023-12-02 14:46:04,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-02 14:46:04,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:46:04,971 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:46:04,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:46:04,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:46:04,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:46:04,971 INFO L85 PathProgramCache]: Analyzing trace with hash -564436649, now seen corresponding path program 1 times [2023-12-02 14:46:04,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:46:04,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44937652] [2023-12-02 14:46:04,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:46:04,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:46:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:46:05,594 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:46:05,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:46:05,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44937652] [2023-12-02 14:46:05,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44937652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:46:05,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:46:05,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:46:05,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354326091] [2023-12-02 14:46:05,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:46:05,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:46:05,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:46:05,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:46:05,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:46:05,596 INFO L87 Difference]: Start difference. First operand 21520 states and 32155 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:46:07,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:46:09,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:46:11,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:46:22,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:46:22,587 INFO L93 Difference]: Finished difference Result 44490 states and 66273 transitions. [2023-12-02 14:46:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:46:22,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 134 [2023-12-02 14:46:22,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:46:22,766 INFO L225 Difference]: With dead ends: 44490 [2023-12-02 14:46:22,766 INFO L226 Difference]: Without dead ends: 32351 [2023-12-02 14:46:22,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:46:22,829 INFO L413 NwaCegarLoop]: 3633 mSDtfsCounter, 4170 mSDsluCounter, 10783 mSDsCounter, 0 mSdLazyCounter, 2574 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4174 SdHoareTripleChecker+Valid, 14416 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2574 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:46:22,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4174 Valid, 14416 Invalid, 2580 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2574 Invalid, 3 Unknown, 0 Unchecked, 16.0s Time] [2023-12-02 14:46:22,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32351 states. [2023-12-02 14:46:24,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32351 to 32276. [2023-12-02 14:46:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32276 states, 20454 states have (on average 1.3335288941038428) internal successors, (27276), 20942 states have internal predecessors, (27276), 10254 states have call successors, (10254), 1568 states have call predecessors, (10254), 1567 states have return successors, (10833), 10079 states have call predecessors, (10833), 10253 states have call successors, (10833) [2023-12-02 14:46:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32276 states to 32276 states and 48363 transitions. [2023-12-02 14:46:24,458 INFO L78 Accepts]: Start accepts. Automaton has 32276 states and 48363 transitions. Word has length 134 [2023-12-02 14:46:24,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:46:24,459 INFO L495 AbstractCegarLoop]: Abstraction has 32276 states and 48363 transitions. [2023-12-02 14:46:24,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:46:24,459 INFO L276 IsEmpty]: Start isEmpty. Operand 32276 states and 48363 transitions. [2023-12-02 14:46:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-02 14:46:24,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:46:24,464 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:46:24,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:46:24,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:46:24,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:46:24,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1412911085, now seen corresponding path program 1 times [2023-12-02 14:46:24,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:46:24,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412299633] [2023-12-02 14:46:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:46:24,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:46:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:46:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:46:25,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:46:25,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412299633] [2023-12-02 14:46:25,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412299633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:46:25,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:46:25,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:46:25,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196116013] [2023-12-02 14:46:25,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:46:25,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:46:25,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:46:25,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:46:25,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:46:25,123 INFO L87 Difference]: Start difference. First operand 32276 states and 48363 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:46:27,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:46:29,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:46:31,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:46:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:46:44,198 INFO L93 Difference]: Finished difference Result 55266 states and 82489 transitions. [2023-12-02 14:46:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:46:44,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 135 [2023-12-02 14:46:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:46:44,399 INFO L225 Difference]: With dead ends: 55266 [2023-12-02 14:46:44,399 INFO L226 Difference]: Without dead ends: 32367 [2023-12-02 14:46:44,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:46:44,511 INFO L413 NwaCegarLoop]: 3633 mSDtfsCounter, 4168 mSDsluCounter, 10783 mSDsCounter, 0 mSdLazyCounter, 2574 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4172 SdHoareTripleChecker+Valid, 14416 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2574 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:46:44,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4172 Valid, 14416 Invalid, 2580 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2574 Invalid, 3 Unknown, 0 Unchecked, 17.8s Time] [2023-12-02 14:46:44,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32367 states. [2023-12-02 14:46:46,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32367 to 32292. [2023-12-02 14:46:46,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32292 states, 20470 states have (on average 1.333268197361993) internal successors, (27292), 20954 states have internal predecessors, (27292), 10250 states have call successors, (10250), 1572 states have call predecessors, (10250), 1571 states have return successors, (10829), 10079 states have call predecessors, (10829), 10249 states have call successors, (10829) [2023-12-02 14:46:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32292 states to 32292 states and 48371 transitions. [2023-12-02 14:46:46,229 INFO L78 Accepts]: Start accepts. Automaton has 32292 states and 48371 transitions. Word has length 135 [2023-12-02 14:46:46,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:46:46,229 INFO L495 AbstractCegarLoop]: Abstraction has 32292 states and 48371 transitions. [2023-12-02 14:46:46,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:46:46,230 INFO L276 IsEmpty]: Start isEmpty. Operand 32292 states and 48371 transitions. [2023-12-02 14:46:46,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 14:46:46,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:46:46,234 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:46:46,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 14:46:46,234 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:46:46,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:46:46,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1955823349, now seen corresponding path program 1 times [2023-12-02 14:46:46,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:46:46,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543290180] [2023-12-02 14:46:46,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:46:46,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:46:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:46:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:46:46,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:46:46,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543290180] [2023-12-02 14:46:46,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543290180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:46:46,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:46:46,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:46:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785678513] [2023-12-02 14:46:46,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:46:46,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:46:46,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:46:46,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:46:46,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:46:46,858 INFO L87 Difference]: Start difference. First operand 32292 states and 48371 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:46:48,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:46:50,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:46:52,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:47:02,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:47:02,036 INFO L93 Difference]: Finished difference Result 50594 states and 75456 transitions. [2023-12-02 14:47:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:47:02,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 137 [2023-12-02 14:47:02,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:47:02,252 INFO L225 Difference]: With dead ends: 50594 [2023-12-02 14:47:02,252 INFO L226 Difference]: Without dead ends: 32388 [2023-12-02 14:47:02,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:47:02,374 INFO L413 NwaCegarLoop]: 3551 mSDtfsCounter, 4169 mSDsluCounter, 7088 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 10639 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:47:02,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 10639 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1912 Invalid, 3 Unknown, 0 Unchecked, 13.8s Time] [2023-12-02 14:47:02,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32388 states. [2023-12-02 14:47:04,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32388 to 32316. [2023-12-02 14:47:04,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32316 states, 20494 states have (on average 1.3328779154874597) internal successors, (27316), 20972 states have internal predecessors, (27316), 10244 states have call successors, (10244), 1578 states have call predecessors, (10244), 1577 states have return successors, (10823), 10079 states have call predecessors, (10823), 10243 states have call successors, (10823) [2023-12-02 14:47:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32316 states to 32316 states and 48383 transitions. [2023-12-02 14:47:04,552 INFO L78 Accepts]: Start accepts. Automaton has 32316 states and 48383 transitions. Word has length 137 [2023-12-02 14:47:04,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:47:04,553 INFO L495 AbstractCegarLoop]: Abstraction has 32316 states and 48383 transitions. [2023-12-02 14:47:04,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:47:04,553 INFO L276 IsEmpty]: Start isEmpty. Operand 32316 states and 48383 transitions. [2023-12-02 14:47:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 14:47:04,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:47:04,561 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:47:04,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 14:47:04,561 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:47:04,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:47:04,561 INFO L85 PathProgramCache]: Analyzing trace with hash -545705844, now seen corresponding path program 1 times [2023-12-02 14:47:04,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:47:04,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566953463] [2023-12-02 14:47:04,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:04,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:47:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:47:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:47:05,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:47:05,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566953463] [2023-12-02 14:47:05,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566953463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:47:05,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:47:05,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:47:05,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741555007] [2023-12-02 14:47:05,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:47:05,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:47:05,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:47:05,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:47:05,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:47:05,393 INFO L87 Difference]: Start difference. First operand 32316 states and 48383 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:47:07,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:47:09,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:47:11,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:47:14,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:47:17,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:47:20,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:47:24,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:47:24,995 INFO L93 Difference]: Finished difference Result 50648 states and 75480 transitions. [2023-12-02 14:47:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:47:24,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 138 [2023-12-02 14:47:24,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:47:25,122 INFO L225 Difference]: With dead ends: 50648 [2023-12-02 14:47:25,123 INFO L226 Difference]: Without dead ends: 32412 [2023-12-02 14:47:25,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:47:25,189 INFO L413 NwaCegarLoop]: 3551 mSDtfsCounter, 4167 mSDsluCounter, 7088 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4171 SdHoareTripleChecker+Valid, 10639 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:47:25,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4171 Valid, 10639 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1910 Invalid, 5 Unknown, 0 Unchecked, 18.0s Time] [2023-12-02 14:47:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32412 states. [2023-12-02 14:47:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32412 to 32340. [2023-12-02 14:47:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32340 states, 20518 states have (on average 1.332488546641973) internal successors, (27340), 20990 states have internal predecessors, (27340), 10238 states have call successors, (10238), 1584 states have call predecessors, (10238), 1583 states have return successors, (10817), 10079 states have call predecessors, (10817), 10237 states have call successors, (10817) [2023-12-02 14:47:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32340 states to 32340 states and 48395 transitions. [2023-12-02 14:47:27,335 INFO L78 Accepts]: Start accepts. Automaton has 32340 states and 48395 transitions. Word has length 138 [2023-12-02 14:47:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:47:27,335 INFO L495 AbstractCegarLoop]: Abstraction has 32340 states and 48395 transitions. [2023-12-02 14:47:27,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:47:27,335 INFO L276 IsEmpty]: Start isEmpty. Operand 32340 states and 48395 transitions. [2023-12-02 14:47:27,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-02 14:47:27,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:47:27,341 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:47:27,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 14:47:27,342 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:47:27,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:47:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash -433543180, now seen corresponding path program 1 times [2023-12-02 14:47:27,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:47:27,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086478670] [2023-12-02 14:47:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:27,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:47:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:47:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:47:27,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:47:27,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086478670] [2023-12-02 14:47:27,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086478670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:47:27,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:47:27,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:47:27,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212733722] [2023-12-02 14:47:27,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:47:27,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:47:27,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:47:27,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:47:27,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:47:27,934 INFO L87 Difference]: Start difference. First operand 32340 states and 48395 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:47:29,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:47:31,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:47:33,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:47:45,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:47:45,891 INFO L93 Difference]: Finished difference Result 55326 states and 82481 transitions. [2023-12-02 14:47:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:47:45,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 136 [2023-12-02 14:47:45,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:47:46,015 INFO L225 Difference]: With dead ends: 55326 [2023-12-02 14:47:46,015 INFO L226 Difference]: Without dead ends: 32375 [2023-12-02 14:47:46,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:47:46,074 INFO L413 NwaCegarLoop]: 3633 mSDtfsCounter, 4166 mSDsluCounter, 10783 mSDsCounter, 0 mSdLazyCounter, 2574 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4170 SdHoareTripleChecker+Valid, 14416 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2574 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:47:46,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4170 Valid, 14416 Invalid, 2580 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2574 Invalid, 3 Unknown, 0 Unchecked, 16.1s Time] [2023-12-02 14:47:46,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32375 states. [2023-12-02 14:47:47,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32375 to 32312. [2023-12-02 14:47:47,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32312 states, 20498 states have (on average 1.3322275343935994) internal successors, (27308), 20966 states have internal predecessors, (27308), 10230 states have call successors, (10230), 1584 states have call predecessors, (10230), 1583 states have return successors, (10809), 10075 states have call predecessors, (10809), 10229 states have call successors, (10809) [2023-12-02 14:47:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32312 states to 32312 states and 48347 transitions. [2023-12-02 14:47:47,937 INFO L78 Accepts]: Start accepts. Automaton has 32312 states and 48347 transitions. Word has length 136 [2023-12-02 14:47:47,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:47:47,937 INFO L495 AbstractCegarLoop]: Abstraction has 32312 states and 48347 transitions. [2023-12-02 14:47:47,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:47:47,938 INFO L276 IsEmpty]: Start isEmpty. Operand 32312 states and 48347 transitions. [2023-12-02 14:47:47,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 14:47:47,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:47:47,941 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:47:47,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 14:47:47,941 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:47:47,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:47:47,942 INFO L85 PathProgramCache]: Analyzing trace with hash 728572146, now seen corresponding path program 1 times [2023-12-02 14:47:47,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:47:47,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708535455] [2023-12-02 14:47:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:47,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:47:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:47:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:47:48,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:47:48,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708535455] [2023-12-02 14:47:48,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708535455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:47:48,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:47:48,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:47:48,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641551773] [2023-12-02 14:47:48,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:47:48,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:47:48,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:47:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:47:48,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:47:48,460 INFO L87 Difference]: Start difference. First operand 32312 states and 48347 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:47:50,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:47:52,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:47:54,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:47:56,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:48:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:04,609 INFO L93 Difference]: Finished difference Result 50230 states and 74821 transitions. [2023-12-02 14:48:04,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:48:04,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 139 [2023-12-02 14:48:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:04,725 INFO L225 Difference]: With dead ends: 50230 [2023-12-02 14:48:04,725 INFO L226 Difference]: Without dead ends: 31978 [2023-12-02 14:48:04,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:48:04,780 INFO L413 NwaCegarLoop]: 3551 mSDtfsCounter, 4165 mSDsluCounter, 7088 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4169 SdHoareTripleChecker+Valid, 10639 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:04,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4169 Valid, 10639 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1912 Invalid, 3 Unknown, 0 Unchecked, 14.6s Time] [2023-12-02 14:48:04,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31978 states. [2023-12-02 14:48:06,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31978 to 31924. [2023-12-02 14:48:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31924 states, 20247 states have (on average 1.332197362572233) internal successors, (26973), 20705 states have internal predecessors, (26973), 10104 states have call successors, (10104), 1573 states have call predecessors, (10104), 1572 states have return successors, (10683), 9956 states have call predecessors, (10683), 10103 states have call successors, (10683) [2023-12-02 14:48:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31924 states to 31924 states and 47760 transitions. [2023-12-02 14:48:06,960 INFO L78 Accepts]: Start accepts. Automaton has 31924 states and 47760 transitions. Word has length 139 [2023-12-02 14:48:06,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:06,961 INFO L495 AbstractCegarLoop]: Abstraction has 31924 states and 47760 transitions. [2023-12-02 14:48:06,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:48:06,961 INFO L276 IsEmpty]: Start isEmpty. Operand 31924 states and 47760 transitions. [2023-12-02 14:48:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 14:48:06,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:06,964 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:06,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 14:48:06,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:48:06,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:06,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1663802884, now seen corresponding path program 1 times [2023-12-02 14:48:06,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:48:06,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467346876] [2023-12-02 14:48:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:06,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:48:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-02 14:48:07,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:48:07,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467346876] [2023-12-02 14:48:07,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467346876] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:48:07,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795767420] [2023-12-02 14:48:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:07,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:48:07,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:48:07,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:48:07,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:48:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:08,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:48:08,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:48:09,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:09,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795767420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:09,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:48:09,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-02 14:48:09,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751774873] [2023-12-02 14:48:09,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:09,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:48:09,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:48:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:48:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-02 14:48:09,190 INFO L87 Difference]: Start difference. First operand 31924 states and 47760 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:48:11,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:48:13,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:48:15,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:48:17,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:48:19,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:48:26,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:48:42,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:42,756 INFO L93 Difference]: Finished difference Result 74772 states and 111935 transitions. [2023-12-02 14:48:42,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 14:48:42,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 146 [2023-12-02 14:48:42,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:42,975 INFO L225 Difference]: With dead ends: 74772 [2023-12-02 14:48:42,975 INFO L226 Difference]: Without dead ends: 53209 [2023-12-02 14:48:43,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-02 14:48:43,062 INFO L413 NwaCegarLoop]: 3982 mSDtfsCounter, 4200 mSDsluCounter, 19529 mSDsCounter, 0 mSdLazyCounter, 4349 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 23511 SdHoareTripleChecker+Invalid, 4356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4349 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:43,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 23511 Invalid, 4356 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 4349 Invalid, 5 Unknown, 0 Unchecked, 30.9s Time] [2023-12-02 14:48:43,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53209 states. [2023-12-02 14:48:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53209 to 53078. [2023-12-02 14:48:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53078 states, 33674 states have (on average 1.3326008196234485) internal successors, (44874), 34448 states have internal predecessors, (44874), 16786 states have call successors, (16786), 2610 states have call predecessors, (16786), 2617 states have return successors, (17965), 16531 states have call predecessors, (17965), 16785 states have call successors, (17965) [2023-12-02 14:48:46,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53078 states to 53078 states and 79625 transitions. [2023-12-02 14:48:46,904 INFO L78 Accepts]: Start accepts. Automaton has 53078 states and 79625 transitions. Word has length 146 [2023-12-02 14:48:46,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:46,904 INFO L495 AbstractCegarLoop]: Abstraction has 53078 states and 79625 transitions. [2023-12-02 14:48:46,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:48:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 53078 states and 79625 transitions. [2023-12-02 14:48:46,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-02 14:48:46,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:46,908 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:46,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:48:47,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:48:47,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:48:47,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:47,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1599796034, now seen corresponding path program 1 times [2023-12-02 14:48:47,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:48:47,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883261760] [2023-12-02 14:48:47,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:47,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:48:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:48:47,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:48:47,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883261760] [2023-12-02 14:48:47,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883261760] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:48:47,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482959474] [2023-12-02 14:48:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:47,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:48:47,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:48:47,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:48:47,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 14:48:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:49,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 3102 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:48:49,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:49,294 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:48:49,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:49,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482959474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:49,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:48:49,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 14:48:49,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509246930] [2023-12-02 14:48:49,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:49,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:48:49,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:48:49,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:48:49,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 14:48:49,297 INFO L87 Difference]: Start difference. First operand 53078 states and 79625 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:48:51,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:48:53,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:48:55,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:48:57,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:48:59,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:49:02,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:49:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:23,411 INFO L93 Difference]: Finished difference Result 117124 states and 175705 transitions. [2023-12-02 14:49:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 14:49:23,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2023-12-02 14:49:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:23,701 INFO L225 Difference]: With dead ends: 117124 [2023-12-02 14:49:23,701 INFO L226 Difference]: Without dead ends: 74407 [2023-12-02 14:49:23,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-02 14:49:23,837 INFO L413 NwaCegarLoop]: 4189 mSDtfsCounter, 4200 mSDsluCounter, 20346 mSDsCounter, 0 mSdLazyCounter, 4572 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 24535 SdHoareTripleChecker+Invalid, 4579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4572 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:23,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 24535 Invalid, 4579 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 4572 Invalid, 5 Unknown, 0 Unchecked, 30.4s Time] [2023-12-02 14:49:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74407 states. [2023-12-02 14:49:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74407 to 74252. [2023-12-02 14:49:29,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74252 states, 47113 states have (on average 1.3326894912232292) internal successors, (62787), 48215 states have internal predecessors, (62787), 23468 states have call successors, (23468), 3647 states have call predecessors, (23468), 3670 states have return successors, (25259), 23102 states have call predecessors, (25259), 23467 states have call successors, (25259) [2023-12-02 14:49:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74252 states to 74252 states and 111514 transitions. [2023-12-02 14:49:29,680 INFO L78 Accepts]: Start accepts. Automaton has 74252 states and 111514 transitions. Word has length 147 [2023-12-02 14:49:29,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:29,681 INFO L495 AbstractCegarLoop]: Abstraction has 74252 states and 111514 transitions. [2023-12-02 14:49:29,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:49:29,681 INFO L276 IsEmpty]: Start isEmpty. Operand 74252 states and 111514 transitions. [2023-12-02 14:49:29,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-02 14:49:29,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:29,687 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:29,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 14:49:29,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:29,888 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:49:29,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:29,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1749783837, now seen corresponding path program 1 times [2023-12-02 14:49:29,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:29,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128484150] [2023-12-02 14:49:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:29,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:49:30,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:30,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128484150] [2023-12-02 14:49:30,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128484150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:49:30,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561391851] [2023-12-02 14:49:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:30,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:30,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:30,765 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:30,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 14:49:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:32,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 3104 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:49:32,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:32,448 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:49:32,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:49:32,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561391851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:49:32,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:49:32,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 14:49:32,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884191850] [2023-12-02 14:49:32,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:49:32,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:49:32,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:32,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:49:32,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 14:49:32,450 INFO L87 Difference]: Start difference. First operand 74252 states and 111514 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:49:34,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:49:36,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:49:38,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:49:40,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:49:42,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:49:46,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:49:52,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:50:03,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:50:03,719 INFO L93 Difference]: Finished difference Result 159464 states and 239467 transitions. [2023-12-02 14:50:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 14:50:03,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 148 [2023-12-02 14:50:03,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:50:04,144 INFO L225 Difference]: With dead ends: 159464 [2023-12-02 14:50:04,144 INFO L226 Difference]: Without dead ends: 95573 [2023-12-02 14:50:04,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-02 14:50:04,387 INFO L413 NwaCegarLoop]: 3911 mSDtfsCounter, 4200 mSDsluCounter, 19234 mSDsCounter, 0 mSdLazyCounter, 4232 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 23145 SdHoareTripleChecker+Invalid, 4239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4232 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:50:04,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 23145 Invalid, 4239 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 4232 Invalid, 5 Unknown, 0 Unchecked, 26.5s Time] [2023-12-02 14:50:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95573 states. [2023-12-02 14:50:10,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95573 to 74256. [2023-12-02 14:50:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74256 states, 47117 states have (on average 1.3326612475327377) internal successors, (62791), 48215 states have internal predecessors, (62791), 23468 states have call successors, (23468), 3647 states have call predecessors, (23468), 3670 states have return successors, (25259), 23106 states have call predecessors, (25259), 23467 states have call successors, (25259) [2023-12-02 14:50:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74256 states to 74256 states and 111518 transitions. [2023-12-02 14:50:11,437 INFO L78 Accepts]: Start accepts. Automaton has 74256 states and 111518 transitions. Word has length 148 [2023-12-02 14:50:11,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:50:11,437 INFO L495 AbstractCegarLoop]: Abstraction has 74256 states and 111518 transitions. [2023-12-02 14:50:11,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:50:11,437 INFO L276 IsEmpty]: Start isEmpty. Operand 74256 states and 111518 transitions. [2023-12-02 14:50:11,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-02 14:50:11,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:50:11,442 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:50:11,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 14:50:11,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:50:11,643 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:50:11,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:50:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash -345491337, now seen corresponding path program 1 times [2023-12-02 14:50:11,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:50:11,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313697074] [2023-12-02 14:50:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:50:11,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:50:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:50:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:50:12,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:50:12,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313697074] [2023-12-02 14:50:12,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313697074] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:50:12,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101596025] [2023-12-02 14:50:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:50:12,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:50:12,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:50:12,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:50:12,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:50:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:50:13,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 3106 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:50:13,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:50:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:50:13,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:50:13,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101596025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:50:13,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:50:13,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 14:50:13,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633294628] [2023-12-02 14:50:13,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:50:13,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:50:13,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:50:13,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:50:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 14:50:13,911 INFO L87 Difference]: Start difference. First operand 74256 states and 111518 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:50:15,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:50:17,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:50:19,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:50:21,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:50:23,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:50:28,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:50:35,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:50:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:50:46,869 INFO L93 Difference]: Finished difference Result 159476 states and 239479 transitions. [2023-12-02 14:50:46,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 14:50:46,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 149 [2023-12-02 14:50:46,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:50:47,271 INFO L225 Difference]: With dead ends: 159476 [2023-12-02 14:50:47,271 INFO L226 Difference]: Without dead ends: 95581 [2023-12-02 14:50:47,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-02 14:50:47,500 INFO L413 NwaCegarLoop]: 3838 mSDtfsCounter, 4200 mSDsluCounter, 18942 mSDsCounter, 0 mSdLazyCounter, 4112 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 22780 SdHoareTripleChecker+Invalid, 4119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4112 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:50:47,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 22780 Invalid, 4119 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 4112 Invalid, 5 Unknown, 0 Unchecked, 28.1s Time] [2023-12-02 14:50:47,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95581 states. [2023-12-02 14:50:52,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95581 to 74260. [2023-12-02 14:50:52,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74260 states, 47121 states have (on average 1.332633008637338) internal successors, (62795), 48215 states have internal predecessors, (62795), 23468 states have call successors, (23468), 3647 states have call predecessors, (23468), 3670 states have return successors, (25259), 23110 states have call predecessors, (25259), 23467 states have call successors, (25259) [2023-12-02 14:50:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74260 states to 74260 states and 111522 transitions. [2023-12-02 14:50:53,228 INFO L78 Accepts]: Start accepts. Automaton has 74260 states and 111522 transitions. Word has length 149 [2023-12-02 14:50:53,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:50:53,229 INFO L495 AbstractCegarLoop]: Abstraction has 74260 states and 111522 transitions. [2023-12-02 14:50:53,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:50:53,229 INFO L276 IsEmpty]: Start isEmpty. Operand 74260 states and 111522 transitions. [2023-12-02 14:50:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-02 14:50:53,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:50:53,234 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:50:53,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 14:50:53,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:50:53,434 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:50:53,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:50:53,435 INFO L85 PathProgramCache]: Analyzing trace with hash -113232836, now seen corresponding path program 1 times [2023-12-02 14:50:53,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:50:53,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648195548] [2023-12-02 14:50:53,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:50:53,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:50:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:50:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-02 14:50:54,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:50:54,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648195548] [2023-12-02 14:50:54,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648195548] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:50:54,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5324907] [2023-12-02 14:50:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:50:54,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:50:54,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:50:54,102 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:50:54,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 14:50:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:50:55,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:50:55,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:50:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:50:55,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:50:55,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5324907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:50:55,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:50:55,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-02 14:50:55,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435993835] [2023-12-02 14:50:55,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:50:55,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:50:55,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:50:55,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:50:55,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-02 14:50:55,577 INFO L87 Difference]: Start difference. First operand 74260 states and 111522 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:50:57,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:50:59,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:51:01,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:51:03,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:51:05,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:51:29,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:51:29,589 INFO L93 Difference]: Finished difference Result 148926 states and 223499 transitions. [2023-12-02 14:51:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 14:51:29,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 152 [2023-12-02 14:51:29,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:51:30,053 INFO L225 Difference]: With dead ends: 148926 [2023-12-02 14:51:30,053 INFO L226 Difference]: Without dead ends: 111088 [2023-12-02 14:51:30,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-02 14:51:30,201 INFO L413 NwaCegarLoop]: 3901 mSDtfsCounter, 4186 mSDsluCounter, 19122 mSDsCounter, 0 mSdLazyCounter, 4297 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4190 SdHoareTripleChecker+Valid, 23023 SdHoareTripleChecker+Invalid, 4303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4297 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:51:30,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4190 Valid, 23023 Invalid, 4303 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4297 Invalid, 5 Unknown, 0 Unchecked, 28.7s Time] [2023-12-02 14:51:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111088 states. [2023-12-02 14:51:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111088 to 110777. [2023-12-02 14:51:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110777 states, 70296 states have (on average 1.3331484010470012) internal successors, (93715), 71938 states have internal predecessors, (93715), 34999 states have call successors, (34999), 5432 states have call predecessors, (34999), 5481 states have return successors, (37700), 34471 states have call predecessors, (37700), 34998 states have call successors, (37700) [2023-12-02 14:51:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110777 states to 110777 states and 166414 transitions. [2023-12-02 14:51:37,489 INFO L78 Accepts]: Start accepts. Automaton has 110777 states and 166414 transitions. Word has length 152 [2023-12-02 14:51:37,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:51:37,489 INFO L495 AbstractCegarLoop]: Abstraction has 110777 states and 166414 transitions. [2023-12-02 14:51:37,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:51:37,489 INFO L276 IsEmpty]: Start isEmpty. Operand 110777 states and 166414 transitions. [2023-12-02 14:51:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-02 14:51:37,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:51:37,495 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:51:37,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 14:51:37,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 14:51:37,696 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:51:37,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:51:37,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1639759623, now seen corresponding path program 1 times [2023-12-02 14:51:37,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:51:37,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964430908] [2023-12-02 14:51:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:51:37,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:51:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:51:38,327 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:51:38,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:51:38,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964430908] [2023-12-02 14:51:38,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964430908] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:51:38,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41883582] [2023-12-02 14:51:38,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:51:38,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:51:38,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:51:38,329 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:51:38,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 14:51:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:51:39,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 3114 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:51:39,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:51:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:51:40,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:51:40,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41883582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:51:40,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:51:40,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 14:51:40,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075497103] [2023-12-02 14:51:40,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:51:40,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:51:40,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:51:40,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:51:40,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 14:51:40,018 INFO L87 Difference]: Start difference. First operand 110777 states and 166414 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:51:41,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:51:43,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:51:45,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:51:47,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:51:49,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:51:54,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:52:17,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:52:17,023 INFO L93 Difference]: Finished difference Result 222002 states and 333325 transitions. [2023-12-02 14:52:17,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 14:52:17,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2023-12-02 14:52:17,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:52:17,795 INFO L225 Difference]: With dead ends: 222002 [2023-12-02 14:52:17,795 INFO L226 Difference]: Without dead ends: 147647 [2023-12-02 14:52:18,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-02 14:52:18,054 INFO L413 NwaCegarLoop]: 3907 mSDtfsCounter, 4186 mSDsluCounter, 19132 mSDsCounter, 0 mSdLazyCounter, 4298 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4190 SdHoareTripleChecker+Valid, 23039 SdHoareTripleChecker+Invalid, 4303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4298 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:52:18,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4190 Valid, 23039 Invalid, 4303 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4298 Invalid, 4 Unknown, 0 Unchecked, 30.0s Time] [2023-12-02 14:52:18,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147647 states. [2023-12-02 14:52:27,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147647 to 147280. [2023-12-02 14:52:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147280 states, 93457 states have (on average 1.3334581679274962) internal successors, (124621), 95661 states have internal predecessors, (124621), 46530 states have call successors, (46530), 7217 states have call predecessors, (46530), 7292 states have return successors, (50141), 45818 states have call predecessors, (50141), 46529 states have call successors, (50141) [2023-12-02 14:52:28,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147280 states to 147280 states and 221292 transitions. [2023-12-02 14:52:28,510 INFO L78 Accepts]: Start accepts. Automaton has 147280 states and 221292 transitions. Word has length 153 [2023-12-02 14:52:28,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:52:28,511 INFO L495 AbstractCegarLoop]: Abstraction has 147280 states and 221292 transitions. [2023-12-02 14:52:28,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:52:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand 147280 states and 221292 transitions. [2023-12-02 14:52:28,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-02 14:52:28,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:52:28,518 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:52:28,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 14:52:28,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 14:52:28,719 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:52:28,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:52:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1541819613, now seen corresponding path program 1 times [2023-12-02 14:52:28,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:52:28,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873190722] [2023-12-02 14:52:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:52:28,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:52:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:52:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:52:29,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:52:29,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873190722] [2023-12-02 14:52:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873190722] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:52:29,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13011992] [2023-12-02 14:52:29,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:52:29,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:52:29,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:52:29,332 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:52:29,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 14:52:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:52:30,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 3116 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:52:30,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:52:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:52:30,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:52:30,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13011992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:52:30,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:52:30,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 14:52:30,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098228847] [2023-12-02 14:52:30,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:52:30,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:52:30,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:52:30,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:52:30,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 14:52:30,992 INFO L87 Difference]: Start difference. First operand 147280 states and 221292 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:52:33,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:52:35,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:52:37,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:52:39,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:52:41,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:52:46,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:52:57,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:53:11,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:53:11,610 INFO L93 Difference]: Finished difference Result 295008 states and 443081 transitions. [2023-12-02 14:53:11,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 14:53:11,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 154 [2023-12-02 14:53:11,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:53:12,633 INFO L225 Difference]: With dead ends: 295008 [2023-12-02 14:53:12,633 INFO L226 Difference]: Without dead ends: 184150 [2023-12-02 14:53:13,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-02 14:53:13,067 INFO L413 NwaCegarLoop]: 3907 mSDtfsCounter, 4186 mSDsluCounter, 19132 mSDsCounter, 0 mSdLazyCounter, 4297 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4190 SdHoareTripleChecker+Valid, 23039 SdHoareTripleChecker+Invalid, 4303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4297 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:53:13,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4190 Valid, 23039 Invalid, 4303 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4297 Invalid, 5 Unknown, 0 Unchecked, 31.5s Time] [2023-12-02 14:53:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184150 states. [2023-12-02 14:53:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184150 to 147280. [2023-12-02 14:53:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147280 states, 93457 states have (on average 1.3334581679274962) internal successors, (124621), 95661 states have internal predecessors, (124621), 46530 states have call successors, (46530), 7217 states have call predecessors, (46530), 7292 states have return successors, (50141), 45818 states have call predecessors, (50141), 46529 states have call successors, (50141) [2023-12-02 14:53:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147280 states to 147280 states and 221292 transitions. [2023-12-02 14:53:24,567 INFO L78 Accepts]: Start accepts. Automaton has 147280 states and 221292 transitions. Word has length 154 [2023-12-02 14:53:24,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:53:24,567 INFO L495 AbstractCegarLoop]: Abstraction has 147280 states and 221292 transitions. [2023-12-02 14:53:24,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:53:24,567 INFO L276 IsEmpty]: Start isEmpty. Operand 147280 states and 221292 transitions. [2023-12-02 14:53:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-02 14:53:24,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:53:24,575 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:53:24,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 14:53:24,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 14:53:24,776 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:53:24,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:53:24,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1218668558, now seen corresponding path program 1 times [2023-12-02 14:53:24,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:53:24,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626651202] [2023-12-02 14:53:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:53:24,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:53:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:53:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:53:25,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:53:25,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626651202] [2023-12-02 14:53:25,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626651202] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:53:25,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314434519] [2023-12-02 14:53:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:53:25,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:53:25,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:53:25,597 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:53:25,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 14:53:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:53:27,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 3118 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:53:27,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:53:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 14:53:27,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:53:27,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314434519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:53:27,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:53:27,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 14:53:27,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902299874] [2023-12-02 14:53:27,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:53:27,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:53:27,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:53:27,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:53:27,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 14:53:27,132 INFO L87 Difference]: Start difference. First operand 147280 states and 221292 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:53:29,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:53:31,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:53:33,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:53:35,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:53:37,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:54:00,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:54:00,563 INFO L93 Difference]: Finished difference Result 295008 states and 443081 transitions. [2023-12-02 14:54:00,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 14:54:00,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2023-12-02 14:54:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:54:01,549 INFO L225 Difference]: With dead ends: 295008 [2023-12-02 14:54:01,550 INFO L226 Difference]: Without dead ends: 184150 [2023-12-02 14:54:01,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-02 14:54:01,963 INFO L413 NwaCegarLoop]: 3556 mSDtfsCounter, 4186 mSDsluCounter, 17728 mSDsCounter, 0 mSdLazyCounter, 3837 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4190 SdHoareTripleChecker+Valid, 21284 SdHoareTripleChecker+Invalid, 3843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3837 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:54:01,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4190 Valid, 21284 Invalid, 3843 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3837 Invalid, 5 Unknown, 0 Unchecked, 24.6s Time] [2023-12-02 14:54:02,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184150 states. [2023-12-02 14:54:11,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184150 to 147280. [2023-12-02 14:54:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147280 states, 93457 states have (on average 1.3334581679274962) internal successors, (124621), 95661 states have internal predecessors, (124621), 46530 states have call successors, (46530), 7217 states have call predecessors, (46530), 7292 states have return successors, (50141), 45818 states have call predecessors, (50141), 46529 states have call successors, (50141) [2023-12-02 14:54:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147280 states to 147280 states and 221292 transitions. [2023-12-02 14:54:12,677 INFO L78 Accepts]: Start accepts. Automaton has 147280 states and 221292 transitions. Word has length 155 [2023-12-02 14:54:12,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:54:12,677 INFO L495 AbstractCegarLoop]: Abstraction has 147280 states and 221292 transitions. [2023-12-02 14:54:12,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 14:54:12,677 INFO L276 IsEmpty]: Start isEmpty. Operand 147280 states and 221292 transitions. [2023-12-02 14:54:12,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-02 14:54:12,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:54:12,685 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:54:12,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 14:54:12,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 14:54:12,886 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:54:12,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:54:12,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1006708684, now seen corresponding path program 1 times [2023-12-02 14:54:12,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:54:12,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907250241] [2023-12-02 14:54:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:54:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:54:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:54:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-12-02 14:54:13,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:54:13,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907250241] [2023-12-02 14:54:13,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907250241] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:54:13,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706264606] [2023-12-02 14:54:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:54:13,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:54:13,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:54:13,762 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:54:13,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa16785-7dc4-4f15-92cb-188c415791cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 14:54:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:54:15,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 3167 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 14:54:15,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:54:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 14:54:15,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:54:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-02 14:54:15,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706264606] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:54:15,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [802455768] [2023-12-02 14:54:15,732 INFO L159 IcfgInterpreter]: Started Sifa with 97 locations of interest [2023-12-02 14:54:15,732 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:54:15,736 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:54:15,741 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:54:15,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs