./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--hippi--rrunner.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/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_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/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--hippi--rrunner.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/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_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/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 ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:47:58,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:47:58,631 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 19:47:58,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:47:58,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:47:58,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:47:58,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:47:58,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:47:58,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:47:58,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:47:58,665 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:47:58,666 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:47:58,666 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:47:58,667 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:47:58,667 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:47:58,668 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:47:58,668 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:47:58,669 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:47:58,669 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:47:58,670 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:47:58,670 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:47:58,671 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:47:58,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:47:58,672 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:47:58,673 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:47:58,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:47:58,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:47:58,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:47:58,674 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:47:58,675 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:47:58,675 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:47:58,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:47:58,676 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:47:58,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:47:58,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:47:58,677 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:47:58,677 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:47:58,677 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:47:58,677 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:47:58,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:47:58,678 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:47:58,678 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:47:58,678 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:47:58,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:47:58,678 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_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 [2023-12-02 19:47:58,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:47:58,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:47:58,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:47:58,901 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:47:58,902 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:47:58,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2023-12-02 19:48:01,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:48:02,091 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:48:02,092 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2023-12-02 19:48:02,134 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/data/30260b06b/b2ddb4eea594498792e22fa10e55d609/FLAGf8b2f9d16 [2023-12-02 19:48:02,149 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/data/30260b06b/b2ddb4eea594498792e22fa10e55d609 [2023-12-02 19:48:02,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:48:02,153 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:48:02,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:48:02,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:48:02,159 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:48:02,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:48:02" (1/1) ... [2023-12-02 19:48:02,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e00bd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02, skipping insertion in model container [2023-12-02 19:48:02,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:48:02" (1/1) ... [2023-12-02 19:48:02,302 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:48:03,720 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_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2023-12-02 19:48:03,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:48:03,804 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:48:03,910 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"); [6231] [2023-12-02 19:48:03,912 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)); [6238] [2023-12-02 19:48:03,913 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [6251] [2023-12-02 19:48:03,916 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; nop": : : "memory"); [6371] [2023-12-02 19:48:03,918 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [6424] [2023-12-02 19:48:03,918 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [6431] [2023-12-02 19:48:03,927 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)); [6570-6571] [2023-12-02 19:48:03,929 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)); [6599-6600] [2023-12-02 19:48:03,930 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)); [6629-6630] [2023-12-02 19:48:03,931 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)); [6659-6660] [2023-12-02 19:48:03,940 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6965] [2023-12-02 19:48:03,941 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6976] [2023-12-02 19:48:03,941 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6987] [2023-12-02 19:48:03,953 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7204] [2023-12-02 19:48:03,954 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7207] [2023-12-02 19:48:03,956 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7268] [2023-12-02 19:48:03,957 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7271] [2023-12-02 19:48:03,957 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7274] [2023-12-02 19:48:03,958 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7295] [2023-12-02 19:48:03,958 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7300] [2023-12-02 19:48:03,959 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7303] [2023-12-02 19:48:03,960 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7313] [2023-12-02 19:48:03,961 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7354] [2023-12-02 19:48:03,962 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7359] [2023-12-02 19:48:03,962 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7366] [2023-12-02 19:48:03,963 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7375] [2023-12-02 19:48:03,964 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7400] [2023-12-02 19:48:03,968 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7466] [2023-12-02 19:48:03,971 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7527] [2023-12-02 19:48:03,971 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7530] [2023-12-02 19:48:03,974 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7562] [2023-12-02 19:48:03,977 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7633] [2023-12-02 19:48:03,979 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7651] [2023-12-02 19:48:03,980 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7657] [2023-12-02 19:48:03,981 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7674] [2023-12-02 19:48:03,982 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7684] [2023-12-02 19:48:03,982 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7690] [2023-12-02 19:48:03,983 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7696] [2023-12-02 19:48:03,983 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7702] [2023-12-02 19:48:03,985 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7741] [2023-12-02 19:48:03,986 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7747] [2023-12-02 19:48:03,987 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7753] [2023-12-02 19:48:03,988 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7771] [2023-12-02 19:48:03,992 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7852] [2023-12-02 19:48:03,995 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7918] [2023-12-02 19:48:03,996 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7936] [2023-12-02 19:48:03,998 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8018] [2023-12-02 19:48:04,000 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8080] [2023-12-02 19:48:04,014 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8345] [2023-12-02 19:48:04,016 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8404] [2023-12-02 19:48:04,016 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8406] [2023-12-02 19:48:04,017 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8414] [2023-12-02 19:48:04,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8451] [2023-12-02 19:48:04,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8453] [2023-12-02 19:48:04,019 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8470] [2023-12-02 19:48:04,023 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)rq->ifr_ifru.ifru_data): "ebx"); [8605] [2023-12-02 19:48:04,024 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)rq->ifr_ifru.ifru_data): "ebx"); [8608] [2023-12-02 19:48:04,024 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)rq->ifr_ifru.ifru_data): "ebx"); [8611] [2023-12-02 19:48:04,025 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)rq->ifr_ifru.ifru_data): "ebx"); [8614] [2023-12-02 19:48:04,025 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)rq->ifr_ifru.ifru_data): "ebx"); [8617] [2023-12-02 19:48:04,072 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_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2023-12-02 19:48:04,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:48:04,141 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:48:04,147 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:48:04,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:04 WrapperNode [2023-12-02 19:48:04,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:48:04,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:48:04,148 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:48:04,148 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:48:04,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:04" (1/1) ... [2023-12-02 19:48:04,217 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:04" (1/1) ... [2023-12-02 19:48:04,325 INFO L138 Inliner]: procedures = 224, calls = 1334, calls flagged for inlining = 123, calls inlined = 120, statements flattened = 4114 [2023-12-02 19:48:04,325 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:48:04,326 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:48:04,326 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:48:04,326 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:48:04,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:04" (1/1) ... [2023-12-02 19:48:04,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:04" (1/1) ... [2023-12-02 19:48:04,357 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:04" (1/1) ... [2023-12-02 19:48:04,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:04" (1/1) ... [2023-12-02 19:48:04,470 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:04" (1/1) ... [2023-12-02 19:48:04,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:04" (1/1) ... [2023-12-02 19:48:04,502 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:04" (1/1) ... [2023-12-02 19:48:04,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:04" (1/1) ... [2023-12-02 19:48:04,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:48:04,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:48:04,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:48:04,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:48:04,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:04" (1/1) ... [2023-12-02 19:48:04,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:48:04,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:48:04,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:48:04,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:48:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-12-02 19:48:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-12-02 19:48:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 19:48:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2023-12-02 19:48:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2023-12-02 19:48:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 19:48:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-12-02 19:48:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-12-02 19:48:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 19:48:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 19:48:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 19:48:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 19:48:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-12-02 19:48:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-12-02 19:48:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-12-02 19:48:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-12-02 19:48:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 19:48:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 19:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 19:48:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 19:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-12-02 19:48:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-12-02 19:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-12-02 19:48:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-12-02 19:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 19:48:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 19:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 19:48:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 19:48:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 19:48:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 19:48:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-12-02 19:48:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-12-02 19:48:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure rr_init1 [2023-12-02 19:48:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_init1 [2023-12-02 19:48:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-12-02 19:48:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-12-02 19:48:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-12-02 19:48:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-12-02 19:48:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:48:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure rr_ioctl [2023-12-02 19:48:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_ioctl [2023-12-02 19:48:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 19:48:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:48:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-12-02 19:48:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-12-02 19:48:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-12-02 19:48:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-12-02 19:48:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 19:48:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 19:48:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-12-02 19:48:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-12-02 19:48:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:48:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 19:48:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 19:48:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 19:48:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-12-02 19:48:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-12-02 19:48:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2023-12-02 19:48:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2023-12-02 19:48:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 19:48:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 19:48:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure set_rraddr [2023-12-02 19:48:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rraddr [2023-12-02 19:48:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 19:48:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 19:48:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 19:48:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 19:48:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure rr_read_eeprom_word [2023-12-02 19:48:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_read_eeprom_word [2023-12-02 19:48:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure hippi_mac_addr [2023-12-02 19:48:04,617 INFO L138 BoogieDeclarations]: Found implementation of procedure hippi_mac_addr [2023-12-02 19:48:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 19:48:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-12-02 19:48:04,617 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-12-02 19:48:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure rr_read_eeprom [2023-12-02 19:48:04,617 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_read_eeprom [2023-12-02 19:48:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 19:48:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:48:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 19:48:04,617 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 19:48:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-12-02 19:48:04,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-12-02 19:48:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 19:48:04,618 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 19:48:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-12-02 19:48:04,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-12-02 19:48:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure hippi_change_mtu [2023-12-02 19:48:04,618 INFO L138 BoogieDeclarations]: Found implementation of procedure hippi_change_mtu [2023-12-02 19:48:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 19:48:04,618 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 19:48:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-12-02 19:48:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-12-02 19:48:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:48:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 19:48:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 19:48:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 19:48:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 19:48:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:48:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 19:48:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 19:48:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:48:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 19:48:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 19:48:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:48:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-12-02 19:48:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-12-02 19:48:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2023-12-02 19:48:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2023-12-02 19:48:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure rr_raz_tx [2023-12-02 19:48:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_raz_tx [2023-12-02 19:48:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-12-02 19:48:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-12-02 19:48:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2023-12-02 19:48:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2023-12-02 19:48:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-12-02 19:48:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-12-02 19:48:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-12-02 19:48:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-12-02 19:48:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-12-02 19:48:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-12-02 19:48:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:48:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:48:04,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:48:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure rr_raz_rx [2023-12-02 19:48:04,622 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_raz_rx [2023-12-02 19:48:05,177 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:48:05,180 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:48:06,453 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 19:48:07,828 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:48:08,873 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:48:08,873 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 19:48:08,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:48:08 BoogieIcfgContainer [2023-12-02 19:48:08,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:48:08,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:48:08,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:48:08,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:48:08,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:48:02" (1/3) ... [2023-12-02 19:48:08,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfd0d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:48:08, skipping insertion in model container [2023-12-02 19:48:08,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:04" (2/3) ... [2023-12-02 19:48:08,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfd0d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:48:08, skipping insertion in model container [2023-12-02 19:48:08,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:48:08" (3/3) ... [2023-12-02 19:48:08,884 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2023-12-02 19:48:08,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:48:08,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:48:08,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:48:08,984 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;@7f3f8f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:48:08,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:48:08,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 1141 states, 655 states have (on average 1.299236641221374) internal successors, (851), 670 states have internal predecessors, (851), 431 states have call successors, (431), 54 states have call predecessors, (431), 53 states have return successors, (425), 425 states have call predecessors, (425), 425 states have call successors, (425) [2023-12-02 19:48:09,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 19:48:09,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:48:09,014 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 19:48:09,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:48:09,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:48:09,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1217574196, now seen corresponding path program 1 times [2023-12-02 19:48:09,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:48:09,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944568128] [2023-12-02 19:48:09,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:09,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:48:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-02 19:48:09,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:48:09,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944568128] [2023-12-02 19:48:09,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944568128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:48:09,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:48:09,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:48:09,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661987918] [2023-12-02 19:48:09,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:48:09,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:48:09,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:48:09,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:48:09,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:48:09,662 INFO L87 Difference]: Start difference. First operand has 1141 states, 655 states have (on average 1.299236641221374) internal successors, (851), 670 states have internal predecessors, (851), 431 states have call successors, (431), 54 states have call predecessors, (431), 53 states have return successors, (425), 425 states have call predecessors, (425), 425 states have call successors, (425) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 19:48:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:48:10,392 INFO L93 Difference]: Finished difference Result 3032 states and 4555 transitions. [2023-12-02 19:48:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:48:10,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2023-12-02 19:48:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:48:10,424 INFO L225 Difference]: With dead ends: 3032 [2023-12-02 19:48:10,424 INFO L226 Difference]: Without dead ends: 1883 [2023-12-02 19:48:10,438 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 19:48:10,441 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 1169 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:48:10,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 3053 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:48:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2023-12-02 19:48:10,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1876. [2023-12-02 19:48:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1081 states have (on average 1.2821461609620721) internal successors, (1386), 1097 states have internal predecessors, (1386), 700 states have call successors, (700), 95 states have call predecessors, (700), 94 states have return successors, (699), 696 states have call predecessors, (699), 699 states have call successors, (699) [2023-12-02 19:48:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 2785 transitions. [2023-12-02 19:48:10,706 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 2785 transitions. Word has length 94 [2023-12-02 19:48:10,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:48:10,707 INFO L495 AbstractCegarLoop]: Abstraction has 1876 states and 2785 transitions. [2023-12-02 19:48:10,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 19:48:10,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 2785 transitions. [2023-12-02 19:48:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-02 19:48:10,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:48:10,715 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 19:48:10,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:48:10,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:48:10,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:48:10,717 INFO L85 PathProgramCache]: Analyzing trace with hash 105638297, now seen corresponding path program 1 times [2023-12-02 19:48:10,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:48:10,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087002422] [2023-12-02 19:48:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:10,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:48:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 19:48:11,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:48:11,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087002422] [2023-12-02 19:48:11,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087002422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:48:11,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:48:11,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:48:11,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719311691] [2023-12-02 19:48:11,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:48:11,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:48:11,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:48:11,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:48:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:48:11,169 INFO L87 Difference]: Start difference. First operand 1876 states and 2785 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-02 19:48:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:48:12,144 INFO L93 Difference]: Finished difference Result 5603 states and 8324 transitions. [2023-12-02 19:48:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:48:12,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2023-12-02 19:48:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:48:12,168 INFO L225 Difference]: With dead ends: 5603 [2023-12-02 19:48:12,169 INFO L226 Difference]: Without dead ends: 3744 [2023-12-02 19:48:12,177 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 19:48:12,181 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1646 mSDsluCounter, 4582 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 6122 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:48:12,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 6122 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 19:48:12,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2023-12-02 19:48:12,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3728. [2023-12-02 19:48:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 2152 states have (on average 1.2825278810408922) internal successors, (2760), 2185 states have internal predecessors, (2760), 1387 states have call successors, (1387), 189 states have call predecessors, (1387), 188 states have return successors, (1386), 1379 states have call predecessors, (1386), 1386 states have call successors, (1386) [2023-12-02 19:48:12,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 5533 transitions. [2023-12-02 19:48:12,472 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 5533 transitions. Word has length 113 [2023-12-02 19:48:12,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:48:12,473 INFO L495 AbstractCegarLoop]: Abstraction has 3728 states and 5533 transitions. [2023-12-02 19:48:12,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-02 19:48:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 5533 transitions. [2023-12-02 19:48:12,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-02 19:48:12,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:48:12,478 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 19:48:12,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:48:12,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:48:12,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:48:12,479 INFO L85 PathProgramCache]: Analyzing trace with hash -542471652, now seen corresponding path program 1 times [2023-12-02 19:48:12,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:48:12,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474801114] [2023-12-02 19:48:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:12,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:48:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 19:48:12,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:48:12,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474801114] [2023-12-02 19:48:12,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474801114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:48:12,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:48:12,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:48:12,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51331920] [2023-12-02 19:48:12,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:48:12,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:48:12,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:48:12,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:48:12,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:48:12,809 INFO L87 Difference]: Start difference. First operand 3728 states and 5533 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-02 19:48:13,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:48:13,735 INFO L93 Difference]: Finished difference Result 7465 states and 11078 transitions. [2023-12-02 19:48:13,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:48:13,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2023-12-02 19:48:13,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:48:13,765 INFO L225 Difference]: With dead ends: 7465 [2023-12-02 19:48:13,766 INFO L226 Difference]: Without dead ends: 3754 [2023-12-02 19:48:13,782 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 19:48:13,784 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1643 mSDsluCounter, 4582 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 6122 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:48:13,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 6122 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 19:48:13,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2023-12-02 19:48:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3738. [2023-12-02 19:48:14,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3738 states, 2160 states have (on average 1.2814814814814814) internal successors, (2768), 2193 states have internal predecessors, (2768), 1387 states have call successors, (1387), 191 states have call predecessors, (1387), 190 states have return successors, (1386), 1379 states have call predecessors, (1386), 1386 states have call successors, (1386) [2023-12-02 19:48:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3738 states to 3738 states and 5541 transitions. [2023-12-02 19:48:14,124 INFO L78 Accepts]: Start accepts. Automaton has 3738 states and 5541 transitions. Word has length 115 [2023-12-02 19:48:14,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:48:14,125 INFO L495 AbstractCegarLoop]: Abstraction has 3738 states and 5541 transitions. [2023-12-02 19:48:14,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-02 19:48:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3738 states and 5541 transitions. [2023-12-02 19:48:14,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-02 19:48:14,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:48:14,128 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 19:48:14,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:48:14,128 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:48:14,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:48:14,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1661041524, now seen corresponding path program 1 times [2023-12-02 19:48:14,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:48:14,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811844754] [2023-12-02 19:48:14,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:14,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:48:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 19:48:14,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:48:14,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811844754] [2023-12-02 19:48:14,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811844754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:48:14,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:48:14,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:48:14,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935283965] [2023-12-02 19:48:14,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:48:14,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:48:14,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:48:14,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:48:14,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:48:14,513 INFO L87 Difference]: Start difference. First operand 3738 states and 5541 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-02 19:48:15,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:48:15,592 INFO L93 Difference]: Finished difference Result 9353 states and 13856 transitions. [2023-12-02 19:48:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:48:15,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 112 [2023-12-02 19:48:15,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:48:15,635 INFO L225 Difference]: With dead ends: 9353 [2023-12-02 19:48:15,635 INFO L226 Difference]: Without dead ends: 5632 [2023-12-02 19:48:15,655 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 19:48:15,656 INFO L413 NwaCegarLoop]: 2457 mSDtfsCounter, 1648 mSDsluCounter, 6418 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 8875 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:48:15,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 8875 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 19:48:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5632 states. [2023-12-02 19:48:16,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5632 to 5578. [2023-12-02 19:48:16,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5578 states, 3223 states have (on average 1.2826559106422588) internal successors, (4134), 3277 states have internal predecessors, (4134), 2070 states have call successors, (2070), 285 states have call predecessors, (2070), 284 states have return successors, (2069), 2054 states have call predecessors, (2069), 2069 states have call successors, (2069) [2023-12-02 19:48:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 8273 transitions. [2023-12-02 19:48:16,089 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 8273 transitions. Word has length 112 [2023-12-02 19:48:16,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:48:16,089 INFO L495 AbstractCegarLoop]: Abstraction has 5578 states and 8273 transitions. [2023-12-02 19:48:16,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-02 19:48:16,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 8273 transitions. [2023-12-02 19:48:16,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-02 19:48:16,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:48:16,092 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 19:48:16,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:48:16,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:48:16,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:48:16,092 INFO L85 PathProgramCache]: Analyzing trace with hash 967571671, now seen corresponding path program 1 times [2023-12-02 19:48:16,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:48:16,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847984202] [2023-12-02 19:48:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:16,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:48:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 19:48:16,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:48:16,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847984202] [2023-12-02 19:48:16,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847984202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:48:16,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:48:16,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:48:16,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677923267] [2023-12-02 19:48:16,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:48:16,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:48:16,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:48:16,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:48:16,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:48:16,374 INFO L87 Difference]: Start difference. First operand 5578 states and 8273 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-02 19:48:17,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:48:17,323 INFO L93 Difference]: Finished difference Result 9471 states and 13962 transitions. [2023-12-02 19:48:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:48:17,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2023-12-02 19:48:17,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:48:17,361 INFO L225 Difference]: With dead ends: 9471 [2023-12-02 19:48:17,361 INFO L226 Difference]: Without dead ends: 5120 [2023-12-02 19:48:17,378 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 19:48:17,379 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1643 mSDsluCounter, 4582 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 6122 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:48:17,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 6122 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 19:48:17,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5120 states. [2023-12-02 19:48:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5120 to 5092. [2023-12-02 19:48:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 2913 states have (on average 1.275660830758668) internal successors, (3716), 2957 states have internal predecessors, (3716), 1899 states have call successors, (1899), 280 states have call predecessors, (1899), 279 states have return successors, (1898), 1885 states have call predecessors, (1898), 1898 states have call successors, (1898) [2023-12-02 19:48:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 7513 transitions. [2023-12-02 19:48:17,810 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 7513 transitions. Word has length 114 [2023-12-02 19:48:17,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:48:17,810 INFO L495 AbstractCegarLoop]: Abstraction has 5092 states and 7513 transitions. [2023-12-02 19:48:17,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-02 19:48:17,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 7513 transitions. [2023-12-02 19:48:17,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 19:48:17,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:48:17,815 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:48:17,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:48:17,815 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:48:17,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:48:17,816 INFO L85 PathProgramCache]: Analyzing trace with hash -878102789, now seen corresponding path program 1 times [2023-12-02 19:48:17,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:48:17,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092455011] [2023-12-02 19:48:17,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:17,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:48:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 19:48:18,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:48:18,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092455011] [2023-12-02 19:48:18,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092455011] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:48:18,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349710001] [2023-12-02 19:48:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:18,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:48:18,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:48:18,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:48:18,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:48:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:19,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:48:19,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:48:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 19:48:19,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:48:19,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349710001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:48:19,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:48:19,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-02 19:48:19,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398015099] [2023-12-02 19:48:19,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:48:19,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:48:19,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:48:19,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:48:19,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-02 19:48:19,181 INFO L87 Difference]: Start difference. First operand 5092 states and 7513 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 19:48:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:48:20,600 INFO L93 Difference]: Finished difference Result 12105 states and 17862 transitions. [2023-12-02 19:48:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 19:48:20,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 125 [2023-12-02 19:48:20,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:48:20,656 INFO L225 Difference]: With dead ends: 12105 [2023-12-02 19:48:20,656 INFO L226 Difference]: Without dead ends: 8374 [2023-12-02 19:48:20,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-02 19:48:20,677 INFO L413 NwaCegarLoop]: 1911 mSDtfsCounter, 1676 mSDsluCounter, 9157 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 11068 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:48:20,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1680 Valid, 11068 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 19:48:20,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8374 states. [2023-12-02 19:48:21,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8374 to 8312. [2023-12-02 19:48:21,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8312 states, 4749 states have (on average 1.2756369762055169) internal successors, (6058), 4829 states have internal predecessors, (6058), 3098 states have call successors, (3098), 461 states have call predecessors, (3098), 464 states have return successors, (3107), 3070 states have call predecessors, (3107), 3097 states have call successors, (3107) [2023-12-02 19:48:21,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8312 states to 8312 states and 12263 transitions. [2023-12-02 19:48:21,430 INFO L78 Accepts]: Start accepts. Automaton has 8312 states and 12263 transitions. Word has length 125 [2023-12-02 19:48:21,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:48:21,431 INFO L495 AbstractCegarLoop]: Abstraction has 8312 states and 12263 transitions. [2023-12-02 19:48:21,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 19:48:21,431 INFO L276 IsEmpty]: Start isEmpty. Operand 8312 states and 12263 transitions. [2023-12-02 19:48:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 19:48:21,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:48:21,435 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:48:21,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:48:21,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 19:48:21,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:48:21,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:48:21,637 INFO L85 PathProgramCache]: Analyzing trace with hash -331613061, now seen corresponding path program 1 times [2023-12-02 19:48:21,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:48:21,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809338991] [2023-12-02 19:48:21,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:21,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:48:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:22,088 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 19:48:22,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:48:22,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809338991] [2023-12-02 19:48:22,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809338991] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:48:22,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010149203] [2023-12-02 19:48:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:22,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:48:22,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:48:22,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:48:22,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:48:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:22,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:48:22,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:48:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 19:48:23,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:48:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010149203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:48:23,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:48:23,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 19:48:23,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361372030] [2023-12-02 19:48:23,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:48:23,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:48:23,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:48:23,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:48:23,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 19:48:23,018 INFO L87 Difference]: Start difference. First operand 8312 states and 12263 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 19:48:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:48:24,497 INFO L93 Difference]: Finished difference Result 18567 states and 27382 transitions. [2023-12-02 19:48:24,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 19:48:24,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2023-12-02 19:48:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:48:24,542 INFO L225 Difference]: With dead ends: 18567 [2023-12-02 19:48:24,542 INFO L226 Difference]: Without dead ends: 11616 [2023-12-02 19:48:24,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-02 19:48:24,573 INFO L413 NwaCegarLoop]: 2719 mSDtfsCounter, 1676 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 15096 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:48:24,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1680 Valid, 15096 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 19:48:24,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11616 states. [2023-12-02 19:48:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11616 to 11542. [2023-12-02 19:48:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11542 states, 6591 states have (on average 1.2753755120619026) internal successors, (8406), 6713 states have internal predecessors, (8406), 4297 states have call successors, (4297), 642 states have call predecessors, (4297), 653 states have return successors, (4322), 4253 states have call predecessors, (4322), 4296 states have call successors, (4322) [2023-12-02 19:48:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11542 states to 11542 states and 17025 transitions. [2023-12-02 19:48:25,663 INFO L78 Accepts]: Start accepts. Automaton has 11542 states and 17025 transitions. Word has length 126 [2023-12-02 19:48:25,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:48:25,664 INFO L495 AbstractCegarLoop]: Abstraction has 11542 states and 17025 transitions. [2023-12-02 19:48:25,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 19:48:25,664 INFO L276 IsEmpty]: Start isEmpty. Operand 11542 states and 17025 transitions. [2023-12-02 19:48:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-02 19:48:25,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:48:25,669 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:48:25,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:48:25,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 19:48:25,870 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:48:25,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:48:25,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1857064574, now seen corresponding path program 1 times [2023-12-02 19:48:25,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:48:25,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787159057] [2023-12-02 19:48:25,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:25,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:48:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 19:48:26,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:48:26,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787159057] [2023-12-02 19:48:26,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787159057] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:48:26,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35836765] [2023-12-02 19:48:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:26,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:48:26,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:48:26,302 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:48:26,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:48:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:27,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:48:27,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:48:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 19:48:27,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:48:27,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35836765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:48:27,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:48:27,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 19:48:27,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934924519] [2023-12-02 19:48:27,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:48:27,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:48:27,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:48:27,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:48:27,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 19:48:27,109 INFO L87 Difference]: Start difference. First operand 11542 states and 17025 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 19:48:28,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:48:28,632 INFO L93 Difference]: Finished difference Result 25023 states and 36898 transitions. [2023-12-02 19:48:28,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 19:48:28,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2023-12-02 19:48:28,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:48:28,677 INFO L225 Difference]: With dead ends: 25023 [2023-12-02 19:48:28,678 INFO L226 Difference]: Without dead ends: 14842 [2023-12-02 19:48:28,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-02 19:48:28,702 INFO L413 NwaCegarLoop]: 2807 mSDtfsCounter, 1676 mSDsluCounter, 12729 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 15536 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:48:28,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1680 Valid, 15536 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 19:48:28,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14842 states. [2023-12-02 19:48:29,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14842 to 11544. [2023-12-02 19:48:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11544 states, 6593 states have (on average 1.2752919763385409) internal successors, (8408), 6713 states have internal predecessors, (8408), 4297 states have call successors, (4297), 642 states have call predecessors, (4297), 653 states have return successors, (4322), 4255 states have call predecessors, (4322), 4296 states have call successors, (4322) [2023-12-02 19:48:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11544 states to 11544 states and 17027 transitions. [2023-12-02 19:48:29,682 INFO L78 Accepts]: Start accepts. Automaton has 11544 states and 17027 transitions. Word has length 127 [2023-12-02 19:48:29,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:48:29,682 INFO L495 AbstractCegarLoop]: Abstraction has 11544 states and 17027 transitions. [2023-12-02 19:48:29,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 19:48:29,682 INFO L276 IsEmpty]: Start isEmpty. Operand 11544 states and 17027 transitions. [2023-12-02 19:48:29,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 19:48:29,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:48:29,687 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:48:29,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:48:29,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:48:29,888 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:48:29,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:48:29,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1106782178, now seen corresponding path program 1 times [2023-12-02 19:48:29,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:48:29,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486695720] [2023-12-02 19:48:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:29,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:48:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 19:48:30,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:48:30,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486695720] [2023-12-02 19:48:30,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486695720] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:48:30,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574150942] [2023-12-02 19:48:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:30,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:48:30,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:48:30,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:48:30,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:48:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:30,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:48:30,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:48:30,967 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 19:48:30,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:48:30,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574150942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:48:30,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:48:30,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 19:48:30,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652326610] [2023-12-02 19:48:30,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:48:30,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:48:30,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:48:30,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:48:30,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 19:48:30,970 INFO L87 Difference]: Start difference. First operand 11544 states and 17027 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 19:48:32,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:48:32,409 INFO L93 Difference]: Finished difference Result 25029 states and 36904 transitions. [2023-12-02 19:48:32,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 19:48:32,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2023-12-02 19:48:32,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:48:32,456 INFO L225 Difference]: With dead ends: 25029 [2023-12-02 19:48:32,456 INFO L226 Difference]: Without dead ends: 14846 [2023-12-02 19:48:32,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-02 19:48:32,480 INFO L413 NwaCegarLoop]: 2803 mSDtfsCounter, 1676 mSDsluCounter, 12713 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 15516 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:48:32,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1680 Valid, 15516 Invalid, 1406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 19:48:32,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14846 states. [2023-12-02 19:48:33,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14846 to 11546. [2023-12-02 19:48:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11546 states, 6595 states have (on average 1.2752084912812738) internal successors, (8410), 6713 states have internal predecessors, (8410), 4297 states have call successors, (4297), 642 states have call predecessors, (4297), 653 states have return successors, (4322), 4257 states have call predecessors, (4322), 4296 states have call successors, (4322) [2023-12-02 19:48:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11546 states to 11546 states and 17029 transitions. [2023-12-02 19:48:33,314 INFO L78 Accepts]: Start accepts. Automaton has 11546 states and 17029 transitions. Word has length 128 [2023-12-02 19:48:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:48:33,314 INFO L495 AbstractCegarLoop]: Abstraction has 11546 states and 17029 transitions. [2023-12-02 19:48:33,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 19:48:33,314 INFO L276 IsEmpty]: Start isEmpty. Operand 11546 states and 17029 transitions. [2023-12-02 19:48:33,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 19:48:33,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:48:33,319 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:33,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 19:48:33,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 19:48:33,519 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:48:33,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:48:33,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1116909668, now seen corresponding path program 1 times [2023-12-02 19:48:33,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:48:33,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954446713] [2023-12-02 19:48:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:33,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:48:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-02 19:48:33,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:48:33,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954446713] [2023-12-02 19:48:33,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954446713] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:48:33,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543331746] [2023-12-02 19:48:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:48:33,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:48:33,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:48:33,857 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:48:33,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170c0cf1-4ccb-40c5-9a19-559541ee6a7b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:48:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:48:34,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 1979 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 19:48:34,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:48:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 19:48:34,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:48:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-12-02 19:48:35,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543331746] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:48:35,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1555603488] [2023-12-02 19:48:35,038 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2023-12-02 19:48:35,038 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:48:35,041 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:48:35,046 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:48:35,047 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:51:32,592 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 142 for LOIs [2023-12-02 19:51:32,843 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 1438 for LOIs [2023-12-02 19:52:35,125 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 1463 for LOIs [2023-12-02 19:52:43,437 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 110 for LOIs [2023-12-02 19:52:43,474 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 142 for LOIs [2023-12-02 19:52:43,539 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:53:11,298 WARN L293 SmtUtils]: Spent 26.68s on a formula simplification. DAG size of input: 1429 DAG size of output: 1425 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:55:38,169 WARN L293 SmtUtils]: Spent 2.44m on a formula simplification. DAG size of input: 1438 DAG size of output: 1435 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:58:44,803 WARN L293 SmtUtils]: Spent 3.09m on a formula simplification. DAG size of input: 1459 DAG size of output: 1456 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 20:01:58,767 WARN L293 SmtUtils]: Spent 3.21m on a formula simplification. DAG size of input: 1463 DAG size of output: 1460 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)