./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--irda--vlsi_ir.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/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_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/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--irda--vlsi_ir.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/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_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/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 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:51:54,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:51:54,309 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 19:51:54,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:51:54,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:51:54,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:51:54,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:51:54,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:51:54,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:51:54,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:51:54,345 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:51:54,346 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:51:54,346 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:51:54,347 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:51:54,347 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:51:54,348 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:51:54,349 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:51:54,349 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:51:54,350 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:51:54,351 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:51:54,351 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:51:54,352 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:51:54,353 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:51:54,354 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:51:54,354 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:51:54,355 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:51:54,355 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:51:54,356 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:51:54,356 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:51:54,357 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:51:54,357 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:51:54,357 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:51:54,358 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:51:54,358 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:51:54,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:51:54,359 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:51:54,359 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:51:54,359 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:51:54,359 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:51:54,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:51:54,360 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:51:54,360 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:51:54,360 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:51:54,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:51:54,361 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_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 [2023-12-02 19:51:54,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:51:54,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:51:54,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:51:54,647 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:51:54,648 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:51:54,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2023-12-02 19:51:57,608 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:51:58,160 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:51:58,161 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2023-12-02 19:51:58,205 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/data/b69940a4b/9e128c4b360749a2a39e3982dc2e9a3c/FLAG95291d0aa [2023-12-02 19:51:58,222 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/data/b69940a4b/9e128c4b360749a2a39e3982dc2e9a3c [2023-12-02 19:51:58,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:51:58,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:51:58,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:51:58,229 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:51:58,235 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:51:58,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:51:58" (1/1) ... [2023-12-02 19:51:58,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0c320f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:51:58, skipping insertion in model container [2023-12-02 19:51:58,237 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:51:58" (1/1) ... [2023-12-02 19:51:58,402 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:52:00,517 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_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2023-12-02 19:52:00,579 WARN L638 FunctionHandler]: implicit declaration of function ldv_xmalloc [2023-12-02 19:52:00,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:52:00,632 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:52:00,771 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"); [6039] [2023-12-02 19:52:00,772 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)); [6046] [2023-12-02 19:52:00,777 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; incl %0": "+m" (v->counter)); [6183] [2023-12-02 19:52:00,778 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [6194] [2023-12-02 19:52:00,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [6197] [2023-12-02 19:52:00,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [6200] [2023-12-02 19:52:00,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [6203] [2023-12-02 19:52:00,784 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [6268] [2023-12-02 19:52:00,784 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [6276] [2023-12-02 19:52:00,785 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [6283] [2023-12-02 19:52:00,785 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inw %w1, %w0": "=a" (value): "Nd" (port)); [6291] [2023-12-02 19:52:00,796 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)); [6472-6473] [2023-12-02 19:52:00,797 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)); [6501-6502] [2023-12-02 19:52:00,799 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" (108), "i" (12UL)); [6531-6532] [2023-12-02 19:52:00,800 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" (120), "i" (12UL)); [6561-6562] [2023-12-02 19:52:00,814 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6925] [2023-12-02 19:52:00,894 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7948] [2023-12-02 19:52:00,895 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7950] [2023-12-02 19:52:00,906 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8140] [2023-12-02 19:52:00,906 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8142] [2023-12-02 19:52:00,921 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8497] [2023-12-02 19:52:00,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8509] [2023-12-02 19:52:00,926 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8560] [2023-12-02 19:52:00,932 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8699] [2023-12-02 19:52:00,964 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_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2023-12-02 19:52:00,970 WARN L638 FunctionHandler]: implicit declaration of function ldv_xmalloc [2023-12-02 19:52:00,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:52:01,101 WARN L675 CHandler]: The function ldv_xmalloc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:52:01,102 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:52:01,102 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:52:01,109 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:52:01,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:52:01 WrapperNode [2023-12-02 19:52:01,109 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:52:01,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:52:01,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:52:01,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:52:01,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:52:01" (1/1) ... [2023-12-02 19:52:01,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:52:01" (1/1) ... [2023-12-02 19:52:01,347 INFO L138 Inliner]: procedures = 275, calls = 2324, calls flagged for inlining = 131, calls inlined = 123, statements flattened = 5493 [2023-12-02 19:52:01,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:52:01,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:52:01,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:52:01,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:52:01,357 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:52:01" (1/1) ... [2023-12-02 19:52:01,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:52:01" (1/1) ... [2023-12-02 19:52:01,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:52:01" (1/1) ... [2023-12-02 19:52:01,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:52:01" (1/1) ... [2023-12-02 19:52:01,538 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:52:01" (1/1) ... [2023-12-02 19:52:01,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:52:01" (1/1) ... [2023-12-02 19:52:01,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:52:01" (1/1) ... [2023-12-02 19:52:01,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:52:01" (1/1) ... [2023-12-02 19:52:01,632 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:52:01,633 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:52:01,633 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:52:01,633 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:52:01,634 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:52:01" (1/1) ... [2023-12-02 19:52:01,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:52:01,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:52:01,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:52:01,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:52:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-12-02 19:52:01,704 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-12-02 19:52:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_2 [2023-12-02 19:52:01,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_2 [2023-12-02 19:52:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 19:52:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 19:52:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-12-02 19:52:01,705 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-12-02 19:52:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 19:52:01,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 19:52:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 19:52:01,705 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 19:52:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-12-02 19:52:01,705 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-12-02 19:52:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-12-02 19:52:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-12-02 19:52:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_count [2023-12-02 19:52:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_count [2023-12-02 19:52:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 19:52:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 19:52:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2023-12-02 19:52:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2023-12-02 19:52:01,707 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_status [2023-12-02 19:52:01,707 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_status [2023-12-02 19:52:01,707 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-12-02 19:52:01,707 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-12-02 19:52:01,707 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_status [2023-12-02 19:52:01,707 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_status [2023-12-02 19:52:01,707 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2023-12-02 19:52:01,707 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2023-12-02 19:52:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 19:52:01,708 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 19:52:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 19:52:01,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 19:52:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ring_debug [2023-12-02 19:52:01,708 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ring_debug [2023-12-02 19:52:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-12-02 19:52:01,709 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-12-02 19:52:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-12-02 19:52:01,709 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-12-02 19:52:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 19:52:01,709 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 19:52:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 19:52:01,709 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 19:52:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 19:52:01,710 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 19:52:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-12-02 19:52:01,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-12-02 19:52:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2023-12-02 19:52:01,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2023-12-02 19:52:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure ring_get [2023-12-02 19:52:01,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_get [2023-12-02 19:52:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-12-02 19:52:01,711 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-12-02 19:52:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:52:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-12-02 19:52:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_resume [2023-12-02 19:52:01,712 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_resume [2023-12-02 19:52:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-12-02 19:52:01,712 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-12-02 19:52:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:52:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2023-12-02 19:52:01,712 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2023-12-02 19:52:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 19:52:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2023-12-02 19:52:01,713 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2023-12-02 19:52:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_us_delta [2023-12-02 19:52:01,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_us_delta [2023-12-02 19:52:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 19:52:01,713 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 19:52:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_free_ring [2023-12-02 19:52:01,714 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_free_ring [2023-12-02 19:52:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure ring_last [2023-12-02 19:52:01,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_last [2023-12-02 19:52:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-12-02 19:52:01,714 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-12-02 19:52:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:52:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure ring_put [2023-12-02 19:52:01,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_put [2023-12-02 19:52:01,715 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2023-12-02 19:52:01,715 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2023-12-02 19:52:01,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 19:52:01,715 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 19:52:01,715 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 19:52:01,715 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-12-02 19:52:01,716 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-12-02 19:52:01,716 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2023-12-02 19:52:01,716 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2023-12-02 19:52:01,716 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 19:52:01,716 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 19:52:01,716 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_tx_timeout [2023-12-02 19:52:01,716 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_tx_timeout [2023-12-02 19:52:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-12-02 19:52:01,717 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-12-02 19:52:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 19:52:01,717 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 19:52:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 19:52:01,717 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 19:52:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-12-02 19:52:01,718 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-12-02 19:52:01,718 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 19:52:01,718 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 19:52:01,718 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_addr_status [2023-12-02 19:52:01,718 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_addr_status [2023-12-02 19:52:01,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 19:52:01,718 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_destroy_hwif [2023-12-02 19:52:01,718 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_destroy_hwif [2023-12-02 19:52:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-12-02 19:52:01,719 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-12-02 19:52:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 19:52:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_stop_hw [2023-12-02 19:52:01,719 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_stop_hw [2023-12-02 19:52:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_addr [2023-12-02 19:52:01,719 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_addr [2023-12-02 19:52:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:52:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 19:52:01,720 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 19:52:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-12-02 19:52:01,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-12-02 19:52:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_remove [2023-12-02 19:52:01,721 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_remove [2023-12-02 19:52:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 19:52:01,721 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 19:52:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2023-12-02 19:52:01,721 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2023-12-02 19:52:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_clear_regs [2023-12-02 19:52:01,721 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_clear_regs [2023-12-02 19:52:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 19:52:01,722 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 19:52:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-12-02 19:52:01,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-12-02 19:52:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2023-12-02 19:52:01,722 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2023-12-02 19:52:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 19:52:01,723 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 19:52:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_start_hw [2023-12-02 19:52:01,723 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_start_hw [2023-12-02 19:52:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-12-02 19:52:01,723 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-12-02 19:52:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:52:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-12-02 19:52:01,724 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-12-02 19:52:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2023-12-02 19:52:01,724 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2023-12-02 19:52:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-12-02 19:52:01,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-12-02 19:52:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure rd_activate [2023-12-02 19:52:01,725 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_activate [2023-12-02 19:52:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2023-12-02 19:52:01,725 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2023-12-02 19:52:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 19:52:01,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 19:52:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure rd_is_active [2023-12-02 19:52:01,726 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_is_active [2023-12-02 19:52:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_close [2023-12-02 19:52:01,726 INFO L138 BoogieDeclarations]: Found implementation of procedure irlap_close [2023-12-02 19:52:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 19:52:01,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 19:52:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:52:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_count [2023-12-02 19:52:01,726 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_count [2023-12-02 19:52:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 19:52:01,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 19:52:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2023-12-02 19:52:01,727 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2023-12-02 19:52:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:52:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-12-02 19:52:01,727 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-12-02 19:52:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 19:52:01,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 19:52:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:52:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 19:52:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_tx [2023-12-02 19:52:01,728 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_tx [2023-12-02 19:52:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-12-02 19:52:01,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-12-02 19:52:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ioctl [2023-12-02 19:52:01,729 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ioctl [2023-12-02 19:52:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_2 [2023-12-02 19:52:01,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_2 [2023-12-02 19:52:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-12-02 19:52:01,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-12-02 19:52:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_alloc_ring [2023-12-02 19:52:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_alloc_ring [2023-12-02 19:52:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_fill_rx [2023-12-02 19:52:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_fill_rx [2023-12-02 19:52:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2023-12-02 19:52:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2023-12-02 19:52:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_rx [2023-12-02 19:52:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_rx [2023-12-02 19:52:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-12-02 19:52:01,731 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-12-02 19:52:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_reg_debug [2023-12-02 19:52:01,731 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_reg_debug [2023-12-02 19:52:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:52:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_set_baud [2023-12-02 19:52:01,731 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_set_baud [2023-12-02 19:52:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2023-12-02 19:52:01,732 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2023-12-02 19:52:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure ring_first [2023-12-02 19:52:01,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_first [2023-12-02 19:52:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2023-12-02 19:52:01,732 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2023-12-02 19:52:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:52:01,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:52:02,526 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:52:02,531 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:52:02,980 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 19:52:07,772 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:52:09,862 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:52:09,862 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 19:52:09,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:52:09 BoogieIcfgContainer [2023-12-02 19:52:09,865 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:52:09,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:52:09,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:52:09,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:52:09,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:51:58" (1/3) ... [2023-12-02 19:52:09,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484d889f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:52:09, skipping insertion in model container [2023-12-02 19:52:09,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:52:01" (2/3) ... [2023-12-02 19:52:09,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484d889f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:52:09, skipping insertion in model container [2023-12-02 19:52:09,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:52:09" (3/3) ... [2023-12-02 19:52:09,875 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2023-12-02 19:52:09,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:52:09,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:52:09,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:52:10,003 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;@5b00f58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:52:10,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:52:10,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 1406 states, 849 states have (on average 1.2979976442873968) internal successors, (1102), 870 states have internal predecessors, (1102), 463 states have call successors, (463), 93 states have call predecessors, (463), 92 states have return successors, (456), 456 states have call predecessors, (456), 456 states have call successors, (456) [2023-12-02 19:52:10,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 19:52:10,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:52:10,046 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:52:10,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:52:10,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:52:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash 356849323, now seen corresponding path program 1 times [2023-12-02 19:52:10,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:52:10,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49284423] [2023-12-02 19:52:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:52:10,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:52:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:52:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-12-02 19:52:11,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:52:11,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49284423] [2023-12-02 19:52:11,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49284423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:52:11,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:52:11,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:52:11,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703451850] [2023-12-02 19:52:11,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:52:11,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:52:11,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:52:11,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:52:11,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:52:11,168 INFO L87 Difference]: Start difference. First operand has 1406 states, 849 states have (on average 1.2979976442873968) internal successors, (1102), 870 states have internal predecessors, (1102), 463 states have call successors, (463), 93 states have call predecessors, (463), 92 states have return successors, (456), 456 states have call predecessors, (456), 456 states have call successors, (456) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 19:52:13,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:52:15,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:52:17,308 WARN L539 Checker$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 19:52:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:52:18,449 INFO L93 Difference]: Finished difference Result 3717 states and 5360 transitions. [2023-12-02 19:52:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:52:18,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2023-12-02 19:52:18,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:52:18,489 INFO L225 Difference]: With dead ends: 3717 [2023-12-02 19:52:18,490 INFO L226 Difference]: Without dead ends: 2303 [2023-12-02 19:52:18,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:52:18,509 INFO L413 NwaCegarLoop]: 1843 mSDtfsCounter, 1369 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 3579 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:52:18,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 3579 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 418 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2023-12-02 19:52:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2023-12-02 19:52:18,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2299. [2023-12-02 19:52:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1394 states have (on average 1.2826398852223817) internal successors, (1788), 1411 states have internal predecessors, (1788), 742 states have call successors, (742), 163 states have call predecessors, (742), 162 states have return successors, (745), 740 states have call predecessors, (745), 741 states have call successors, (745) [2023-12-02 19:52:18,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3275 transitions. [2023-12-02 19:52:18,791 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3275 transitions. Word has length 131 [2023-12-02 19:52:18,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:52:18,792 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 3275 transitions. [2023-12-02 19:52:18,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 19:52:18,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3275 transitions. [2023-12-02 19:52:18,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-02 19:52:18,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:52:18,807 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:52:18,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:52:18,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:52:18,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:52:18,809 INFO L85 PathProgramCache]: Analyzing trace with hash -16245697, now seen corresponding path program 1 times [2023-12-02 19:52:18,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:52:18,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021261839] [2023-12-02 19:52:18,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:52:18,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:52:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:52:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-02 19:52:19,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:52:19,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021261839] [2023-12-02 19:52:19,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021261839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:52:19,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:52:19,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:52:19,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701073631] [2023-12-02 19:52:19,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:52:19,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:52:19,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:52:19,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:52:19,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:52:19,832 INFO L87 Difference]: Start difference. First operand 2299 states and 3275 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 19:52:22,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:52:24,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:52:28,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:52:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:52:34,241 INFO L93 Difference]: Finished difference Result 6744 states and 9606 transitions. [2023-12-02 19:52:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:52:34,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 187 [2023-12-02 19:52:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:52:34,292 INFO L225 Difference]: With dead ends: 6744 [2023-12-02 19:52:34,292 INFO L226 Difference]: Without dead ends: 4473 [2023-12-02 19:52:34,312 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 19:52:34,313 INFO L413 NwaCegarLoop]: 1859 mSDtfsCounter, 1792 mSDsluCounter, 5463 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 7322 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:52:34,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1796 Valid, 7322 Invalid, 840 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 836 Invalid, 1 Unknown, 0 Unchecked, 13.9s Time] [2023-12-02 19:52:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4473 states. [2023-12-02 19:52:34,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4473 to 4457. [2023-12-02 19:52:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4457 states, 2706 states have (on average 1.2834441980783444) internal successors, (3473), 2740 states have internal predecessors, (3473), 1430 states have call successors, (1430), 321 states have call predecessors, (1430), 320 states have return successors, (1437), 1426 states have call predecessors, (1437), 1429 states have call successors, (1437) [2023-12-02 19:52:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4457 states to 4457 states and 6340 transitions. [2023-12-02 19:52:34,701 INFO L78 Accepts]: Start accepts. Automaton has 4457 states and 6340 transitions. Word has length 187 [2023-12-02 19:52:34,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:52:34,702 INFO L495 AbstractCegarLoop]: Abstraction has 4457 states and 6340 transitions. [2023-12-02 19:52:34,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 19:52:34,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4457 states and 6340 transitions. [2023-12-02 19:52:34,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-02 19:52:34,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:52:34,709 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:52:34,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:52:34,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:52:34,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:52:34,710 INFO L85 PathProgramCache]: Analyzing trace with hash -652691076, now seen corresponding path program 1 times [2023-12-02 19:52:34,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:52:34,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146455710] [2023-12-02 19:52:34,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:52:34,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:52:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:52:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-02 19:52:35,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:52:35,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146455710] [2023-12-02 19:52:35,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146455710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:52:35,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:52:35,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:52:35,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950342737] [2023-12-02 19:52:35,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:52:35,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:52:35,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:52:35,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:52:35,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:52:35,770 INFO L87 Difference]: Start difference. First operand 4457 states and 6340 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 19:52:38,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:52:43,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:52:47,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:52:49,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:52:49,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:52:49,782 INFO L93 Difference]: Finished difference Result 11076 states and 15752 transitions. [2023-12-02 19:52:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:52:49,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 185 [2023-12-02 19:52:49,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:52:49,839 INFO L225 Difference]: With dead ends: 11076 [2023-12-02 19:52:49,839 INFO L226 Difference]: Without dead ends: 6647 [2023-12-02 19:52:49,862 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 19:52:49,864 INFO L413 NwaCegarLoop]: 1862 mSDtfsCounter, 1796 mSDsluCounter, 5471 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:52:49,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1800 Valid, 7333 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 842 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2023-12-02 19:52:49,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6647 states. [2023-12-02 19:52:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6647 to 6605. [2023-12-02 19:52:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6605 states, 4010 states have (on average 1.28428927680798) internal successors, (5150), 4067 states have internal predecessors, (5150), 2116 states have call successors, (2116), 479 states have call predecessors, (2116), 478 states have return successors, (2127), 2104 states have call predecessors, (2127), 2115 states have call successors, (2127) [2023-12-02 19:52:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6605 states to 6605 states and 9393 transitions. [2023-12-02 19:52:50,338 INFO L78 Accepts]: Start accepts. Automaton has 6605 states and 9393 transitions. Word has length 185 [2023-12-02 19:52:50,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:52:50,339 INFO L495 AbstractCegarLoop]: Abstraction has 6605 states and 9393 transitions. [2023-12-02 19:52:50,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 19:52:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand 6605 states and 9393 transitions. [2023-12-02 19:52:50,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-02 19:52:50,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:52:50,350 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:52:50,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:52:50,350 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:52:50,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:52:50,351 INFO L85 PathProgramCache]: Analyzing trace with hash -149130251, now seen corresponding path program 1 times [2023-12-02 19:52:50,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:52:50,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860635387] [2023-12-02 19:52:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:52:50,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:52:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:52:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-02 19:52:51,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:52:51,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860635387] [2023-12-02 19:52:51,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860635387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:52:51,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:52:51,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:52:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746835035] [2023-12-02 19:52:51,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:52:51,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:52:51,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:52:51,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:52:51,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:52:51,216 INFO L87 Difference]: Start difference. First operand 6605 states and 9393 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 19:52:53,271 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 19:52:55,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:52:57,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:53:05,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:53:05,950 INFO L93 Difference]: Finished difference Result 11904 states and 16842 transitions. [2023-12-02 19:53:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:53:05,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 188 [2023-12-02 19:53:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:53:05,991 INFO L225 Difference]: With dead ends: 11904 [2023-12-02 19:53:05,992 INFO L226 Difference]: Without dead ends: 6647 [2023-12-02 19:53:06,011 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 19:53:06,013 INFO L413 NwaCegarLoop]: 1859 mSDtfsCounter, 1790 mSDsluCounter, 5463 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 7322 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:53:06,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1794 Valid, 7322 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 834 Invalid, 3 Unknown, 0 Unchecked, 14.4s Time] [2023-12-02 19:53:06,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6647 states. [2023-12-02 19:53:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6647 to 6613. [2023-12-02 19:53:06,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6613 states, 4018 states have (on average 1.2837232453957192) internal successors, (5158), 4073 states have internal predecessors, (5158), 2114 states have call successors, (2114), 481 states have call predecessors, (2114), 480 states have return successors, (2125), 2104 states have call predecessors, (2125), 2113 states have call successors, (2125) [2023-12-02 19:53:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6613 states to 6613 states and 9397 transitions. [2023-12-02 19:53:06,380 INFO L78 Accepts]: Start accepts. Automaton has 6613 states and 9397 transitions. Word has length 188 [2023-12-02 19:53:06,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:53:06,381 INFO L495 AbstractCegarLoop]: Abstraction has 6613 states and 9397 transitions. [2023-12-02 19:53:06,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 19:53:06,381 INFO L276 IsEmpty]: Start isEmpty. Operand 6613 states and 9397 transitions. [2023-12-02 19:53:06,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-02 19:53:06,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:53:06,389 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:53:06,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:53:06,389 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:53:06,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:53:06,390 INFO L85 PathProgramCache]: Analyzing trace with hash -259133870, now seen corresponding path program 1 times [2023-12-02 19:53:06,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:53:06,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036265897] [2023-12-02 19:53:06,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:53:06,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:53:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:53:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-02 19:53:07,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:53:07,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036265897] [2023-12-02 19:53:07,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036265897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:53:07,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:53:07,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:53:07,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405355509] [2023-12-02 19:53:07,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:53:07,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:53:07,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:53:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:53:07,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:53:07,109 INFO L87 Difference]: Start difference. First operand 6613 states and 9397 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 19:53:12,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:53:16,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:53:18,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:53:18,592 INFO L93 Difference]: Finished difference Result 11684 states and 16493 transitions. [2023-12-02 19:53:18,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:53:18,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 186 [2023-12-02 19:53:18,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:53:18,636 INFO L225 Difference]: With dead ends: 11684 [2023-12-02 19:53:18,636 INFO L226 Difference]: Without dead ends: 6417 [2023-12-02 19:53:18,657 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 19:53:18,658 INFO L413 NwaCegarLoop]: 1859 mSDtfsCounter, 1791 mSDsluCounter, 5463 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 7322 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:53:18,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1795 Valid, 7322 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 837 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2023-12-02 19:53:18,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6417 states. [2023-12-02 19:53:18,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6417 to 6389. [2023-12-02 19:53:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6389 states, 3881 states have (on average 1.2818861118268488) internal successors, (4975), 3930 states have internal predecessors, (4975), 2031 states have call successors, (2031), 477 states have call predecessors, (2031), 476 states have return successors, (2042), 2023 states have call predecessors, (2042), 2030 states have call successors, (2042) [2023-12-02 19:53:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6389 states to 6389 states and 9048 transitions. [2023-12-02 19:53:19,016 INFO L78 Accepts]: Start accepts. Automaton has 6389 states and 9048 transitions. Word has length 186 [2023-12-02 19:53:19,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:53:19,017 INFO L495 AbstractCegarLoop]: Abstraction has 6389 states and 9048 transitions. [2023-12-02 19:53:19,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 19:53:19,018 INFO L276 IsEmpty]: Start isEmpty. Operand 6389 states and 9048 transitions. [2023-12-02 19:53:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-02 19:53:19,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:53:19,026 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:53:19,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:53:19,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:53:19,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:53:19,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1747673784, now seen corresponding path program 1 times [2023-12-02 19:53:19,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:53:19,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352625043] [2023-12-02 19:53:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:53:19,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:53:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:53:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-02 19:53:20,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:53:20,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352625043] [2023-12-02 19:53:20,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352625043] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:53:20,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194063798] [2023-12-02 19:53:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:53:20,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:53:20,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:53:20,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:53:20,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:53:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:53:21,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 4169 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:53:21,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:53:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-02 19:53:21,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:53:21,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194063798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:53:21,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:53:21,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-02 19:53:21,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189522952] [2023-12-02 19:53:21,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:53:21,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:53:21,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:53:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:53:21,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-02 19:53:21,795 INFO L87 Difference]: Start difference. First operand 6389 states and 9048 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, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:53:24,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:53:26,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:53:35,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:53:43,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:53:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:53:45,897 INFO L93 Difference]: Finished difference Result 14994 states and 21234 transitions. [2023-12-02 19:53:45,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 19:53:45,898 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, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 198 [2023-12-02 19:53:45,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:53:45,944 INFO L225 Difference]: With dead ends: 14994 [2023-12-02 19:53:45,944 INFO L226 Difference]: Without dead ends: 10545 [2023-12-02 19:53:45,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-02 19:53:45,962 INFO L413 NwaCegarLoop]: 2566 mSDtfsCounter, 1831 mSDsluCounter, 12023 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 14589 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:53:45,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1835 Valid, 14589 Invalid, 1736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1732 Invalid, 2 Unknown, 0 Unchecked, 23.6s Time] [2023-12-02 19:53:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10545 states. [2023-12-02 19:53:46,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10545 to 10483. [2023-12-02 19:53:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10483 states, 6372 states have (on average 1.2827997489014438) internal successors, (8174), 6461 states have internal predecessors, (8174), 3320 states have call successors, (3320), 787 states have call predecessors, (3320), 790 states have return successors, (3349), 3302 states have call predecessors, (3349), 3319 states have call successors, (3349) [2023-12-02 19:53:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10483 states to 10483 states and 14843 transitions. [2023-12-02 19:53:46,484 INFO L78 Accepts]: Start accepts. Automaton has 10483 states and 14843 transitions. Word has length 198 [2023-12-02 19:53:46,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:53:46,485 INFO L495 AbstractCegarLoop]: Abstraction has 10483 states and 14843 transitions. [2023-12-02 19:53:46,485 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, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:53:46,485 INFO L276 IsEmpty]: Start isEmpty. Operand 10483 states and 14843 transitions. [2023-12-02 19:53:46,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-02 19:53:46,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:53:46,495 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:53:46,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:53:46,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:53:46,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:53:46,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:53:46,696 INFO L85 PathProgramCache]: Analyzing trace with hash 870672359, now seen corresponding path program 1 times [2023-12-02 19:53:46,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:53:46,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861713318] [2023-12-02 19:53:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:53:46,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:53:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:53:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-02 19:53:47,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:53:47,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861713318] [2023-12-02 19:53:47,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861713318] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:53:47,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833195307] [2023-12-02 19:53:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:53:47,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:53:47,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:53:47,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:53:47,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:53:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:53:48,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 4171 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:53:48,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:53:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-02 19:53:48,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:53:48,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833195307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:53:48,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:53:48,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 19:53:48,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203936854] [2023-12-02 19:53:48,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:53:48,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:53:48,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:53:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:53:48,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 19:53:48,835 INFO L87 Difference]: Start difference. First operand 10483 states and 14843 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, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:53:50,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:53:52,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:53:54,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:53:56,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:53:58,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:03,803 WARN L539 Checker$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 19:54:04,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:06,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:11,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:14,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:17,306 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 19:54:18,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:54:18,373 INFO L93 Difference]: Finished difference Result 23204 states and 32844 transitions. [2023-12-02 19:54:18,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 19:54:18,373 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, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 199 [2023-12-02 19:54:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:54:18,415 INFO L225 Difference]: With dead ends: 23204 [2023-12-02 19:54:18,415 INFO L226 Difference]: Without dead ends: 14661 [2023-12-02 19:54:18,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 196 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 19:54:18,438 INFO L413 NwaCegarLoop]: 2405 mSDtfsCounter, 1831 mSDsluCounter, 11367 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 13772 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:54:18,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1835 Valid, 13772 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1631 Invalid, 4 Unknown, 0 Unchecked, 28.9s Time] [2023-12-02 19:54:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14661 states. [2023-12-02 19:54:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14661 to 14587. [2023-12-02 19:54:19,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14587 states, 8869 states have (on average 1.2830082309166762) internal successors, (11379), 9004 states have internal predecessors, (11379), 4609 states have call successors, (4609), 1097 states have call predecessors, (4609), 1108 states have return successors, (4662), 4579 states have call predecessors, (4662), 4608 states have call successors, (4662) [2023-12-02 19:54:19,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14587 states to 14587 states and 20650 transitions. [2023-12-02 19:54:19,186 INFO L78 Accepts]: Start accepts. Automaton has 14587 states and 20650 transitions. Word has length 199 [2023-12-02 19:54:19,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:54:19,186 INFO L495 AbstractCegarLoop]: Abstraction has 14587 states and 20650 transitions. [2023-12-02 19:54:19,187 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, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:54:19,187 INFO L276 IsEmpty]: Start isEmpty. Operand 14587 states and 20650 transitions. [2023-12-02 19:54:19,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-02 19:54:19,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:54:19,203 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:54:19,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:54:19,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 19:54:19,403 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:54:19,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:54:19,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1826344609, now seen corresponding path program 1 times [2023-12-02 19:54:19,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:54:19,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471660607] [2023-12-02 19:54:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:19,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:54:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-02 19:54:20,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:54:20,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471660607] [2023-12-02 19:54:20,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471660607] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:54:20,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070634298] [2023-12-02 19:54:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:20,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:54:20,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:54:20,502 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:54:20,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:54:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:21,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 4173 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:54:21,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:54:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-02 19:54:21,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:54:21,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070634298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:54:21,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:54:21,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 19:54:21,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116653725] [2023-12-02 19:54:21,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:54:21,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:54:21,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:54:21,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:54:21,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 19:54:21,650 INFO L87 Difference]: Start difference. First operand 14587 states and 20650 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:54:23,696 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 19:54:25,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:27,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:29,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:31,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:38,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:40,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:42,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:43,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:48,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:51,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:54:51,517 INFO L93 Difference]: Finished difference Result 31408 states and 44450 transitions. [2023-12-02 19:54:51,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 19:54:51,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 200 [2023-12-02 19:54:51,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:54:51,578 INFO L225 Difference]: With dead ends: 31408 [2023-12-02 19:54:51,578 INFO L226 Difference]: Without dead ends: 18761 [2023-12-02 19:54:51,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 197 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 19:54:51,616 INFO L413 NwaCegarLoop]: 2321 mSDtfsCounter, 1831 mSDsluCounter, 11031 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 13352 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:54:51,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1835 Valid, 13352 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1620 Invalid, 5 Unknown, 0 Unchecked, 29.1s Time] [2023-12-02 19:54:51,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18761 states. [2023-12-02 19:54:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18761 to 14589. [2023-12-02 19:54:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14589 states, 8871 states have (on average 1.282944425656634) internal successors, (11381), 9004 states have internal predecessors, (11381), 4609 states have call successors, (4609), 1097 states have call predecessors, (4609), 1108 states have return successors, (4662), 4581 states have call predecessors, (4662), 4608 states have call successors, (4662) [2023-12-02 19:54:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14589 states to 14589 states and 20652 transitions. [2023-12-02 19:54:52,623 INFO L78 Accepts]: Start accepts. Automaton has 14589 states and 20652 transitions. Word has length 200 [2023-12-02 19:54:52,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:54:52,624 INFO L495 AbstractCegarLoop]: Abstraction has 14589 states and 20652 transitions. [2023-12-02 19:54:52,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:54:52,624 INFO L276 IsEmpty]: Start isEmpty. Operand 14589 states and 20652 transitions. [2023-12-02 19:54:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-02 19:54:52,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:54:52,638 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:54:52,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:54:52,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 19:54:52,839 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:54:52,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:54:52,840 INFO L85 PathProgramCache]: Analyzing trace with hash -814301266, now seen corresponding path program 1 times [2023-12-02 19:54:52,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:54:52,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643694082] [2023-12-02 19:54:52,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:52,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:54:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-02 19:54:53,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:54:53,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643694082] [2023-12-02 19:54:53,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643694082] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:54:53,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97925535] [2023-12-02 19:54:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:53,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:54:53,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:54:53,924 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:54:53,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:54:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:54,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 4175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:54:54,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:54:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-02 19:54:55,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:54:55,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97925535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:54:55,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:54:55,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 19:54:55,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830651743] [2023-12-02 19:54:55,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:54:55,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:54:55,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:54:55,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:54:55,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 19:54:55,081 INFO L87 Difference]: Start difference. First operand 14589 states and 20652 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:54:56,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:57,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:54:59,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:55:01,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:55:03,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:55:10,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:55:13,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:55:15,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:55:19,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:55:21,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:55:21,746 INFO L93 Difference]: Finished difference Result 31414 states and 44456 transitions. [2023-12-02 19:55:21,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 19:55:21,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 201 [2023-12-02 19:55:21,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:55:21,795 INFO L225 Difference]: With dead ends: 31414 [2023-12-02 19:55:21,795 INFO L226 Difference]: Without dead ends: 18765 [2023-12-02 19:55:21,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 198 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 19:55:21,847 INFO L413 NwaCegarLoop]: 2662 mSDtfsCounter, 1831 mSDsluCounter, 12395 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 15057 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:55:21,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1835 Valid, 15057 Invalid, 1753 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1749 Invalid, 2 Unknown, 0 Unchecked, 25.9s Time] [2023-12-02 19:55:21,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18765 states. [2023-12-02 19:55:22,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18765 to 14591. [2023-12-02 19:55:22,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14591 states, 8873 states have (on average 1.2828806491603741) internal successors, (11383), 9004 states have internal predecessors, (11383), 4609 states have call successors, (4609), 1097 states have call predecessors, (4609), 1108 states have return successors, (4662), 4583 states have call predecessors, (4662), 4608 states have call successors, (4662) [2023-12-02 19:55:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14591 states to 14591 states and 20654 transitions. [2023-12-02 19:55:22,595 INFO L78 Accepts]: Start accepts. Automaton has 14591 states and 20654 transitions. Word has length 201 [2023-12-02 19:55:22,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:55:22,636 INFO L495 AbstractCegarLoop]: Abstraction has 14591 states and 20654 transitions. [2023-12-02 19:55:22,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:55:22,637 INFO L276 IsEmpty]: Start isEmpty. Operand 14591 states and 20654 transitions. [2023-12-02 19:55:22,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-02 19:55:22,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:55:22,652 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:55:22,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 19:55:22,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:55:22,867 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:55:22,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:55:22,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2059528659, now seen corresponding path program 1 times [2023-12-02 19:55:22,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:55:22,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291811367] [2023-12-02 19:55:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:55:22,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:55:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:55:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-12-02 19:55:23,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:55:23,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291811367] [2023-12-02 19:55:23,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291811367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:55:23,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:55:23,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:55:23,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900349150] [2023-12-02 19:55:23,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:55:23,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:55:23,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:55:23,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:55:23,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:55:23,548 INFO L87 Difference]: Start difference. First operand 14591 states and 20654 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 19:55:24,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:55:28,514 WARN L539 Checker$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 19:55:31,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:55:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:55:32,667 INFO L93 Difference]: Finished difference Result 38074 states and 53677 transitions. [2023-12-02 19:55:32,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:55:32,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 204 [2023-12-02 19:55:32,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:55:32,747 INFO L225 Difference]: With dead ends: 38074 [2023-12-02 19:55:32,747 INFO L226 Difference]: Without dead ends: 23511 [2023-12-02 19:55:32,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:55:32,790 INFO L413 NwaCegarLoop]: 2564 mSDtfsCounter, 1577 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:55:32,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 4285 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-12-02 19:55:32,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23511 states. [2023-12-02 19:55:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23511 to 23494. [2023-12-02 19:55:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23494 states, 14304 states have (on average 1.2813199105145414) internal successors, (18328), 14556 states have internal predecessors, (18328), 7312 states have call successors, (7312), 1854 states have call predecessors, (7312), 1877 states have return successors, (7391), 7254 states have call predecessors, (7391), 7311 states have call successors, (7391) [2023-12-02 19:55:33,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23494 states to 23494 states and 33031 transitions. [2023-12-02 19:55:34,001 INFO L78 Accepts]: Start accepts. Automaton has 23494 states and 33031 transitions. Word has length 204 [2023-12-02 19:55:34,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:55:34,002 INFO L495 AbstractCegarLoop]: Abstraction has 23494 states and 33031 transitions. [2023-12-02 19:55:34,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 19:55:34,003 INFO L276 IsEmpty]: Start isEmpty. Operand 23494 states and 33031 transitions. [2023-12-02 19:55:34,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-02 19:55:34,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:55:34,016 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:55:34,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 19:55:34,017 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:55:34,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:55:34,017 INFO L85 PathProgramCache]: Analyzing trace with hash 354520061, now seen corresponding path program 1 times [2023-12-02 19:55:34,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:55:34,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314041180] [2023-12-02 19:55:34,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:55:34,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:55:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:55:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-02 19:55:34,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:55:34,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314041180] [2023-12-02 19:55:34,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314041180] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:55:34,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064775775] [2023-12-02 19:55:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:55:34,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:55:34,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:55:34,915 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:55:34,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1c1b1b-9a35-4fd4-b7a4-cd3f626f19ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:55:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:55:36,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 4236 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 19:55:36,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:55:36,225 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-12-02 19:55:36,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:55:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-02 19:55:36,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064775775] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:55:36,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1171587960] [2023-12-02 19:55:36,738 INFO L159 IcfgInterpreter]: Started Sifa with 118 locations of interest [2023-12-02 19:55:36,738 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:55:36,741 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:55:36,744 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:55:36,745 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:59:12,932 WARN L293 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 3584 DAG size of output: 3584 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:59:29,542 WARN L293 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 3584 DAG size of output: 3584 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 20:00:41,665 WARN L293 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 3449 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 20:04:49,718 WARN L293 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 3594 DAG size of output: 3594 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 20:05:06,280 WARN L293 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 3594 DAG size of output: 3594 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)