./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.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_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/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_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/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_4f1f87c8-856c-4d51-b404-4ec4a3c53579/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 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:26:31,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:26:31,937 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 15:26:31,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:26:31,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:26:31,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:26:31,966 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:26:31,967 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:26:31,968 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:26:31,968 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:26:31,969 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:26:31,969 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:26:31,970 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:26:31,970 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:26:31,971 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:26:31,972 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:26:31,972 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:26:31,973 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:26:31,973 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:26:31,974 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:26:31,975 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:26:31,975 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:26:31,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:26:31,977 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:26:31,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:26:31,978 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:26:31,978 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:26:31,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:26:31,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:26:31,980 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:26:31,981 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:26:31,981 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:26:31,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:26:31,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:26:31,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:26:31,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:26:31,982 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:26:31,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:26:31,983 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:26:31,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:26:31,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:26:31,983 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:26:31,983 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:26:31,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:26:31,984 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_4f1f87c8-856c-4d51-b404-4ec4a3c53579/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 [2023-12-02 15:26:32,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:26:32,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:26:32,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:26:32,240 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:26:32,241 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:26:32,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2023-12-02 15:26:35,378 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:26:35,890 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:26:35,890 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2023-12-02 15:26:35,930 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/data/c8f1dd7a9/f93ce7e49ec7462499d3372137261fc6/FLAG63ab72e41 [2023-12-02 15:26:35,945 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/data/c8f1dd7a9/f93ce7e49ec7462499d3372137261fc6 [2023-12-02 15:26:35,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:26:35,950 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:26:35,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:26:35,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:26:35,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:26:35,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47181966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35, skipping insertion in model container [2023-12-02 15:26:35,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:36,101 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:26:37,554 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_4f1f87c8-856c-4d51-b404-4ec4a3c53579/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2023-12-02 15:26:37,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:26:37,676 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:26:37,792 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"); [6103] [2023-12-02 15:26:37,794 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [6111-6112] [2023-12-02 15:26:37,795 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [6119] [2023-12-02 15:26:37,797 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/exper_fp/inst/current/envs/linux-3.10-rc1.tar/linux-3.10-rc1/arch/x86/include/asm/paravirt.h"), "i" (824), "i" (12UL)); [6179-6180] [2023-12-02 15:26:37,797 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (44UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [6185-6187] [2023-12-02 15:26:37,946 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_4f1f87c8-856c-4d51-b404-4ec4a3c53579/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2023-12-02 15:26:37,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:26:38,017 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:26:38,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:38 WrapperNode [2023-12-02 15:26:38,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:26:38,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:26:38,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:26:38,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:26:38,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:38" (1/1) ... [2023-12-02 15:26:38,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:38" (1/1) ... [2023-12-02 15:26:38,224 INFO L138 Inliner]: procedures = 216, calls = 1507, calls flagged for inlining = 108, calls inlined = 97, statements flattened = 3449 [2023-12-02 15:26:38,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:26:38,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:26:38,225 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:26:38,225 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:26:38,236 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:38" (1/1) ... [2023-12-02 15:26:38,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:38" (1/1) ... [2023-12-02 15:26:38,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:38" (1/1) ... [2023-12-02 15:26:38,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:38" (1/1) ... [2023-12-02 15:26:38,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:38" (1/1) ... [2023-12-02 15:26:38,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:38" (1/1) ... [2023-12-02 15:26:38,426 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:38" (1/1) ... [2023-12-02 15:26:38,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:38" (1/1) ... [2023-12-02 15:26:38,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:26:38,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:26:38,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:26:38,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:26:38,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:38" (1/1) ... [2023-12-02 15:26:38,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:26:38,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:38,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:26:38,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:26:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-12-02 15:26:38,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-12-02 15:26:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_free_iso_urbs [2023-12-02 15:26:38,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_free_iso_urbs [2023-12-02 15:26:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-12-02 15:26:38,541 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-12-02 15:26:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 15:26:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 15:26:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2023-12-02 15:26:38,542 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2023-12-02 15:26:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2023-12-02 15:26:38,542 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2023-12-02 15:26:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 15:26:38,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 15:26:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_iso_mutex_of_ttusb_dec [2023-12-02 15:26:38,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_iso_mutex_of_ttusb_dec [2023-12-02 15:26:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2023-12-02 15:26:38,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2023-12-02 15:26:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 15:26:38,543 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 15:26:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 15:26:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 15:26:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_usb_mutex_of_ttusb_dec [2023-12-02 15:26:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_usb_mutex_of_ttusb_dec [2023-12-02 15:26:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2023-12-02 15:26:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2023-12-02 15:26:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 15:26:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 15:26:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:26:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-12-02 15:26:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-12-02 15:26:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 15:26:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 15:26:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:26:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 15:26:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 15:26:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2023-12-02 15:26:38,546 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2023-12-02 15:26:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:26:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 15:26:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 15:26:38,546 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 15:26:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 15:26:38,546 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 15:26:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-12-02 15:26:38,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-12-02 15:26:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 15:26:38,547 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 15:26:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 15:26:38,547 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 15:26:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-12-02 15:26:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-12-02 15:26:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-12-02 15:26:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-12-02 15:26:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-12-02 15:26:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-12-02 15:26:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_model [2023-12-02 15:26:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_model [2023-12-02 15:26:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2023-12-02 15:26:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2023-12-02 15:26:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-12-02 15:26:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-12-02 15:26:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_stop_iso_xfer [2023-12-02 15:26:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_stop_iso_xfer [2023-12-02 15:26:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-12-02 15:26:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-12-02 15:26:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_filter_pes2ts_init [2023-12-02 15:26:38,550 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_filter_pes2ts_init [2023-12-02 15:26:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 15:26:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-12-02 15:26:38,550 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-12-02 15:26:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-12-02 15:26:38,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-12-02 15:26:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 15:26:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2023-12-02 15:26:38,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2023-12-02 15:26:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-12-02 15:26:38,551 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-12-02 15:26:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:26:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 15:26:38,551 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 15:26:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-12-02 15:26:38,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-12-02 15:26:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-12-02 15:26:38,552 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-12-02 15:26:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 15:26:38,552 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 15:26:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-12-02 15:26:38,553 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-12-02 15:26:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_send_command [2023-12-02 15:26:38,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_send_command [2023-12-02 15:26:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:26:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_setup_urbs [2023-12-02 15:26:38,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_setup_urbs [2023-12-02 15:26:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2023-12-02 15:26:38,553 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2023-12-02 15:26:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 15:26:38,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 15:26:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_pids [2023-12-02 15:26:38,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_pids [2023-12-02 15:26:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_usb [2023-12-02 15:26:38,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_usb [2023-12-02 15:26:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:26:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:26:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:26:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_iso_mutex_of_ttusb_dec [2023-12-02 15:26:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_iso_mutex_of_ttusb_dec [2023-12-02 15:26:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 15:26:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 15:26:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-12-02 15:26:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-12-02 15:26:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2023-12-02 15:26:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2023-12-02 15:26:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 15:26:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 15:26:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:26:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:26:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:26:39,147 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:26:39,150 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:26:45,004 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:26:45,879 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:26:45,879 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 15:26:45,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:26:45 BoogieIcfgContainer [2023-12-02 15:26:45,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:26:45,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:26:45,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:26:45,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:26:45,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:26:35" (1/3) ... [2023-12-02 15:26:45,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc71ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:26:45, skipping insertion in model container [2023-12-02 15:26:45,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:38" (2/3) ... [2023-12-02 15:26:45,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc71ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:26:45, skipping insertion in model container [2023-12-02 15:26:45,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:26:45" (3/3) ... [2023-12-02 15:26:45,892 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2023-12-02 15:26:45,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:26:45,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:26:46,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:26:46,031 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;@53a003b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:26:46,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:26:46,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 890 states, 566 states have (on average 1.332155477031802) internal successors, (754), 586 states have internal predecessors, (754), 271 states have call successors, (271), 51 states have call predecessors, (271), 51 states have return successors, (271), 265 states have call predecessors, (271), 271 states have call successors, (271) [2023-12-02 15:26:46,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 15:26:46,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:46,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:26:46,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:26:46,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:46,058 INFO L85 PathProgramCache]: Analyzing trace with hash 628942845, now seen corresponding path program 1 times [2023-12-02 15:26:46,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:46,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512406172] [2023-12-02 15:26:46,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:46,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:26:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:26:46,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:46,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512406172] [2023-12-02 15:26:46,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512406172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:26:46,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:26:46,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:26:46,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109709437] [2023-12-02 15:26:46,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:26:46,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:26:46,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:46,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:26:46,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:26:46,554 INFO L87 Difference]: Start difference. First operand has 890 states, 566 states have (on average 1.332155477031802) internal successors, (754), 586 states have internal predecessors, (754), 271 states have call successors, (271), 51 states have call predecessors, (271), 51 states have return successors, (271), 265 states have call predecessors, (271), 271 states have call successors, (271) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:49,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:26:51,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:26:53,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:53,061 INFO L93 Difference]: Finished difference Result 2618 states and 3867 transitions. [2023-12-02 15:26:53,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:26:53,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 15:26:53,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:53,103 INFO L225 Difference]: With dead ends: 2618 [2023-12-02 15:26:53,104 INFO L226 Difference]: Without dead ends: 1725 [2023-12-02 15:26:53,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:26:53,130 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 1237 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:53,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 2319 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 264 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2023-12-02 15:26:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2023-12-02 15:26:53,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1721. [2023-12-02 15:26:53,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1099 states have (on average 1.3248407643312101) internal successors, (1456), 1129 states have internal predecessors, (1456), 523 states have call successors, (523), 100 states have call predecessors, (523), 98 states have return successors, (523), 501 states have call predecessors, (523), 515 states have call successors, (523) [2023-12-02 15:26:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2502 transitions. [2023-12-02 15:26:53,397 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2502 transitions. Word has length 7 [2023-12-02 15:26:53,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:53,398 INFO L495 AbstractCegarLoop]: Abstraction has 1721 states and 2502 transitions. [2023-12-02 15:26:53,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2502 transitions. [2023-12-02 15:26:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 15:26:53,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:53,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:26:53,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:26:53,399 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:26:53,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:53,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1978130767, now seen corresponding path program 1 times [2023-12-02 15:26:53,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:53,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646740076] [2023-12-02 15:26:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:53,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:26:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:26:53,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:53,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646740076] [2023-12-02 15:26:53,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646740076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:26:53,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:26:53,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:26:53,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276191035] [2023-12-02 15:26:53,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:26:53,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:26:53,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:26:53,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:26:53,566 INFO L87 Difference]: Start difference. First operand 1721 states and 2502 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:55,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:26:55,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:55,995 INFO L93 Difference]: Finished difference Result 1723 states and 2503 transitions. [2023-12-02 15:26:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:26:55,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 15:26:55,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:56,015 INFO L225 Difference]: With dead ends: 1723 [2023-12-02 15:26:56,015 INFO L226 Difference]: Without dead ends: 1720 [2023-12-02 15:26:56,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:26:56,019 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 1276 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:56,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 1154 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 15:26:56,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2023-12-02 15:26:56,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1720. [2023-12-02 15:26:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1099 states have (on average 1.32393084622384) internal successors, (1455), 1128 states have internal predecessors, (1455), 522 states have call successors, (522), 100 states have call predecessors, (522), 98 states have return successors, (523), 501 states have call predecessors, (523), 515 states have call successors, (523) [2023-12-02 15:26:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2500 transitions. [2023-12-02 15:26:56,183 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2500 transitions. Word has length 8 [2023-12-02 15:26:56,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:56,183 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2500 transitions. [2023-12-02 15:26:56,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:56,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2500 transitions. [2023-12-02 15:26:56,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:26:56,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:56,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:26:56,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:26:56,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:26:56,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:56,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1193029248, now seen corresponding path program 1 times [2023-12-02 15:26:56,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:56,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892230824] [2023-12-02 15:26:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:56,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:26:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:26:56,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:56,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892230824] [2023-12-02 15:26:56,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892230824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:26:56,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:26:56,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:26:56,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011023170] [2023-12-02 15:26:56,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:26:56,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:26:56,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:56,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:26:56,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:26:56,346 INFO L87 Difference]: Start difference. First operand 1720 states and 2500 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:58,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:26:58,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:58,893 INFO L93 Difference]: Finished difference Result 1722 states and 2501 transitions. [2023-12-02 15:26:58,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:26:58,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-02 15:26:58,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:58,907 INFO L225 Difference]: With dead ends: 1722 [2023-12-02 15:26:58,907 INFO L226 Difference]: Without dead ends: 1719 [2023-12-02 15:26:58,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:26:58,909 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 1273 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:58,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 1152 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 15:26:58,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2023-12-02 15:26:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1719. [2023-12-02 15:26:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1099 states have (on average 1.3230209281164695) internal successors, (1454), 1127 states have internal predecessors, (1454), 521 states have call successors, (521), 100 states have call predecessors, (521), 98 states have return successors, (523), 501 states have call predecessors, (523), 515 states have call successors, (523) [2023-12-02 15:26:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2498 transitions. [2023-12-02 15:26:59,055 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2498 transitions. Word has length 9 [2023-12-02 15:26:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:59,055 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2498 transitions. [2023-12-02 15:26:59,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2498 transitions. [2023-12-02 15:26:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 15:26:59,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:59,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:26:59,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:26:59,058 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:26:59,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:59,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1670286228, now seen corresponding path program 1 times [2023-12-02 15:26:59,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:59,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626305014] [2023-12-02 15:26:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:59,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:26:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:26:59,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:59,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626305014] [2023-12-02 15:26:59,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626305014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:26:59,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:26:59,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:26:59,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938968322] [2023-12-02 15:26:59,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:26:59,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:26:59,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:59,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:26:59,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:26:59,234 INFO L87 Difference]: Start difference. First operand 1719 states and 2498 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:27:02,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:27:03,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:27:03,390 INFO L93 Difference]: Finished difference Result 3314 states and 4860 transitions. [2023-12-02 15:27:03,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:27:03,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 15:27:03,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:27:03,423 INFO L225 Difference]: With dead ends: 3314 [2023-12-02 15:27:03,423 INFO L226 Difference]: Without dead ends: 3305 [2023-12-02 15:27:03,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:27:03,427 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 1208 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:27:03,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 2282 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-02 15:27:03,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2023-12-02 15:27:03,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 3300. [2023-12-02 15:27:03,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 2116 states have (on average 1.3237240075614367) internal successors, (2801), 2167 states have internal predecessors, (2801), 990 states have call successors, (990), 196 states have call predecessors, (990), 193 states have return successors, (1052), 956 states have call predecessors, (1052), 984 states have call successors, (1052) [2023-12-02 15:27:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4843 transitions. [2023-12-02 15:27:03,713 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4843 transitions. Word has length 10 [2023-12-02 15:27:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:27:03,714 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 4843 transitions. [2023-12-02 15:27:03,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:27:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4843 transitions. [2023-12-02 15:27:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 15:27:03,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:27:03,728 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:27:03,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 15:27:03,728 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:27:03,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:27:03,729 INFO L85 PathProgramCache]: Analyzing trace with hash -532136782, now seen corresponding path program 1 times [2023-12-02 15:27:03,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:27:03,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925186600] [2023-12-02 15:27:03,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:03,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:27:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 15:27:04,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:27:04,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925186600] [2023-12-02 15:27:04,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925186600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:27:04,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:27:04,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:27:04,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034765470] [2023-12-02 15:27:04,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:27:04,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:27:04,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:27:04,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:27:04,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:27:04,238 INFO L87 Difference]: Start difference. First operand 3300 states and 4843 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-02 15:27:05,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:27:05,421 INFO L93 Difference]: Finished difference Result 6471 states and 9477 transitions. [2023-12-02 15:27:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:27:05,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 109 [2023-12-02 15:27:05,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:27:05,452 INFO L225 Difference]: With dead ends: 6471 [2023-12-02 15:27:05,453 INFO L226 Difference]: Without dead ends: 3172 [2023-12-02 15:27:05,472 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 15:27:05,473 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 1193 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:27:05,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 1104 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 15:27:05,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2023-12-02 15:27:05,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 3172. [2023-12-02 15:27:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3172 states, 2028 states have (on average 1.314102564102564) internal successors, (2665), 2079 states have internal predecessors, (2665), 950 states have call successors, (950), 196 states have call predecessors, (950), 193 states have return successors, (1008), 916 states have call predecessors, (1008), 944 states have call successors, (1008) [2023-12-02 15:27:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3172 states to 3172 states and 4623 transitions. [2023-12-02 15:27:05,727 INFO L78 Accepts]: Start accepts. Automaton has 3172 states and 4623 transitions. Word has length 109 [2023-12-02 15:27:05,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:27:05,728 INFO L495 AbstractCegarLoop]: Abstraction has 3172 states and 4623 transitions. [2023-12-02 15:27:05,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-02 15:27:05,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3172 states and 4623 transitions. [2023-12-02 15:27:05,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-02 15:27:05,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:27:05,734 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:27:05,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 15:27:05,734 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:27:05,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:27:05,734 INFO L85 PathProgramCache]: Analyzing trace with hash 629342173, now seen corresponding path program 1 times [2023-12-02 15:27:05,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:27:05,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659282677] [2023-12-02 15:27:05,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:05,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:27:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:27:06,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:27:06,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659282677] [2023-12-02 15:27:06,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659282677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:27:06,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:27:06,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:27:06,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833522558] [2023-12-02 15:27:06,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:27:06,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:27:06,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:27:06,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:27:06,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:27:06,040 INFO L87 Difference]: Start difference. First operand 3172 states and 4623 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 15:27:07,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:27:07,713 INFO L93 Difference]: Finished difference Result 6367 states and 9288 transitions. [2023-12-02 15:27:07,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:27:07,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 98 [2023-12-02 15:27:07,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:27:07,742 INFO L225 Difference]: With dead ends: 6367 [2023-12-02 15:27:07,743 INFO L226 Difference]: Without dead ends: 3196 [2023-12-02 15:27:07,760 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 15:27:07,761 INFO L413 NwaCegarLoop]: 1103 mSDtfsCounter, 264 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:27:07,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1874 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 15:27:07,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3196 states. [2023-12-02 15:27:08,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3196 to 3196. [2023-12-02 15:27:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3196 states, 2052 states have (on average 1.3157894736842106) internal successors, (2700), 2103 states have internal predecessors, (2700), 950 states have call successors, (950), 196 states have call predecessors, (950), 193 states have return successors, (1008), 916 states have call predecessors, (1008), 944 states have call successors, (1008) [2023-12-02 15:27:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 4658 transitions. [2023-12-02 15:27:08,093 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 4658 transitions. Word has length 98 [2023-12-02 15:27:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:27:08,093 INFO L495 AbstractCegarLoop]: Abstraction has 3196 states and 4658 transitions. [2023-12-02 15:27:08,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 15:27:08,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 4658 transitions. [2023-12-02 15:27:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-02 15:27:08,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:27:08,098 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:27:08,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 15:27:08,099 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:27:08,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:27:08,099 INFO L85 PathProgramCache]: Analyzing trace with hash 816407098, now seen corresponding path program 1 times [2023-12-02 15:27:08,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:27:08,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225391218] [2023-12-02 15:27:08,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:08,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:27:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 15:27:09,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:27:09,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225391218] [2023-12-02 15:27:09,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225391218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:27:09,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:27:09,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:27:09,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693048348] [2023-12-02 15:27:09,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:27:09,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:27:09,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:27:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:27:09,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:27:09,140 INFO L87 Difference]: Start difference. First operand 3196 states and 4658 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 15:27:11,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:27:11,290 INFO L93 Difference]: Finished difference Result 3218 states and 4693 transitions. [2023-12-02 15:27:11,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:27:11,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 115 [2023-12-02 15:27:11,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:27:11,328 INFO L225 Difference]: With dead ends: 3218 [2023-12-02 15:27:11,328 INFO L226 Difference]: Without dead ends: 3215 [2023-12-02 15:27:11,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:27:11,330 INFO L413 NwaCegarLoop]: 1115 mSDtfsCounter, 96 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:27:11,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 2150 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 15:27:11,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2023-12-02 15:27:11,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3215. [2023-12-02 15:27:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3215 states, 2064 states have (on average 1.314922480620155) internal successors, (2714), 2116 states have internal predecessors, (2714), 949 states have call successors, (949), 202 states have call predecessors, (949), 201 states have return successors, (1026), 916 states have call predecessors, (1026), 944 states have call successors, (1026) [2023-12-02 15:27:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 4689 transitions. [2023-12-02 15:27:11,517 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 4689 transitions. Word has length 115 [2023-12-02 15:27:11,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:27:11,518 INFO L495 AbstractCegarLoop]: Abstraction has 3215 states and 4689 transitions. [2023-12-02 15:27:11,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 15:27:11,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 4689 transitions. [2023-12-02 15:27:11,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 15:27:11,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:27:11,524 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:27:11,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 15:27:11,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:27:11,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:27:11,525 INFO L85 PathProgramCache]: Analyzing trace with hash -105848474, now seen corresponding path program 1 times [2023-12-02 15:27:11,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:27:11,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531424739] [2023-12-02 15:27:11,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:11,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:27:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 15:27:11,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:27:11,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531424739] [2023-12-02 15:27:11,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531424739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:27:11,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:27:11,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:27:11,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806101177] [2023-12-02 15:27:11,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:27:11,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:27:11,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:27:11,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:27:11,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:27:11,739 INFO L87 Difference]: Start difference. First operand 3215 states and 4689 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 15:27:13,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:27:13,511 INFO L93 Difference]: Finished difference Result 6448 states and 9400 transitions. [2023-12-02 15:27:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:27:13,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 124 [2023-12-02 15:27:13,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:27:13,539 INFO L225 Difference]: With dead ends: 6448 [2023-12-02 15:27:13,539 INFO L226 Difference]: Without dead ends: 3230 [2023-12-02 15:27:13,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:27:13,559 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 15 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:27:13,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 3320 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 15:27:13,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2023-12-02 15:27:13,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 3219. [2023-12-02 15:27:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 2069 states have (on average 1.3136781053649105) internal successors, (2718), 2121 states have internal predecessors, (2718), 948 states have call successors, (948), 202 states have call predecessors, (948), 201 states have return successors, (1025), 915 states have call predecessors, (1025), 943 states have call successors, (1025) [2023-12-02 15:27:13,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 4691 transitions. [2023-12-02 15:27:13,846 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 4691 transitions. Word has length 124 [2023-12-02 15:27:13,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:27:13,847 INFO L495 AbstractCegarLoop]: Abstraction has 3219 states and 4691 transitions. [2023-12-02 15:27:13,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 15:27:13,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 4691 transitions. [2023-12-02 15:27:13,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-02 15:27:13,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:27:13,887 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:13,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 15:27:13,887 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:27:13,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:27:13,888 INFO L85 PathProgramCache]: Analyzing trace with hash 245818318, now seen corresponding path program 1 times [2023-12-02 15:27:13,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:27:13,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38785933] [2023-12-02 15:27:13,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:13,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:27:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:14,318 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 15:27:14,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:27:14,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38785933] [2023-12-02 15:27:14,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38785933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:27:14,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:27:14,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:27:14,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882766088] [2023-12-02 15:27:14,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:27:14,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:27:14,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:27:14,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:27:14,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:27:14,321 INFO L87 Difference]: Start difference. First operand 3219 states and 4691 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 15:27:15,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:27:15,982 INFO L93 Difference]: Finished difference Result 6449 states and 9409 transitions. [2023-12-02 15:27:15,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:27:15,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 158 [2023-12-02 15:27:15,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:27:16,010 INFO L225 Difference]: With dead ends: 6449 [2023-12-02 15:27:16,010 INFO L226 Difference]: Without dead ends: 3231 [2023-12-02 15:27:16,024 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 15:27:16,025 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 1 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:27:16,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2205 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 15:27:16,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2023-12-02 15:27:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3223. [2023-12-02 15:27:16,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 2073 states have (on average 1.3130728412928123) internal successors, (2722), 2125 states have internal predecessors, (2722), 948 states have call successors, (948), 202 states have call predecessors, (948), 201 states have return successors, (1025), 915 states have call predecessors, (1025), 943 states have call successors, (1025) [2023-12-02 15:27:16,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4695 transitions. [2023-12-02 15:27:16,279 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4695 transitions. Word has length 158 [2023-12-02 15:27:16,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:27:16,280 INFO L495 AbstractCegarLoop]: Abstraction has 3223 states and 4695 transitions. [2023-12-02 15:27:16,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 15:27:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4695 transitions. [2023-12-02 15:27:16,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-02 15:27:16,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:27:16,289 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:16,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 15:27:16,289 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:27:16,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:27:16,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1685932448, now seen corresponding path program 1 times [2023-12-02 15:27:16,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:27:16,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756043077] [2023-12-02 15:27:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:16,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:27:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 15:27:16,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:27:16,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756043077] [2023-12-02 15:27:16,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756043077] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:27:16,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058052101] [2023-12-02 15:27:16,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:16,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:27:16,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:27:16,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:27:16,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:27:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:17,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:27:17,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:27:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 15:27:17,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:27:17,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058052101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:27:17,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:27:17,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-02 15:27:17,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085921304] [2023-12-02 15:27:17,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:27:17,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:27:17,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:27:17,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:27:17,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:27:17,742 INFO L87 Difference]: Start difference. First operand 3223 states and 4695 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-02 15:27:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:27:19,348 INFO L93 Difference]: Finished difference Result 6457 states and 9425 transitions. [2023-12-02 15:27:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:27:19,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 163 [2023-12-02 15:27:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:27:19,366 INFO L225 Difference]: With dead ends: 6457 [2023-12-02 15:27:19,367 INFO L226 Difference]: Without dead ends: 3235 [2023-12-02 15:27:19,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:27:19,380 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 1 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:27:19,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2205 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 15:27:19,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2023-12-02 15:27:19,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3227. [2023-12-02 15:27:19,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 2077 states have (on average 1.3124699085219067) internal successors, (2726), 2129 states have internal predecessors, (2726), 948 states have call successors, (948), 202 states have call predecessors, (948), 201 states have return successors, (1025), 915 states have call predecessors, (1025), 943 states have call successors, (1025) [2023-12-02 15:27:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 4699 transitions. [2023-12-02 15:27:19,667 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 4699 transitions. Word has length 163 [2023-12-02 15:27:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:27:19,668 INFO L495 AbstractCegarLoop]: Abstraction has 3227 states and 4699 transitions. [2023-12-02 15:27:19,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-02 15:27:19,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 4699 transitions. [2023-12-02 15:27:19,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-02 15:27:19,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:27:19,677 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:19,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:27:19,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:27:19,878 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:27:19,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:27:19,879 INFO L85 PathProgramCache]: Analyzing trace with hash 111005500, now seen corresponding path program 1 times [2023-12-02 15:27:19,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:27:19,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409594391] [2023-12-02 15:27:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:19,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:27:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-02 15:27:20,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:27:20,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409594391] [2023-12-02 15:27:20,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409594391] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:27:20,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194180948] [2023-12-02 15:27:20,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:20,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:27:20,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:27:20,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:27:20,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:27:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:21,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 2223 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:27:21,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:27:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 15:27:21,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:27:21,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194180948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:27:21,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:27:21,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2023-12-02 15:27:21,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987969204] [2023-12-02 15:27:21,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:27:21,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:27:21,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:27:21,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:27:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:27:21,393 INFO L87 Difference]: Start difference. First operand 3227 states and 4699 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 15:27:24,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:27:24,325 INFO L93 Difference]: Finished difference Result 7412 states and 10956 transitions. [2023-12-02 15:27:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:27:24,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 168 [2023-12-02 15:27:24,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:27:24,348 INFO L225 Difference]: With dead ends: 7412 [2023-12-02 15:27:24,348 INFO L226 Difference]: Without dead ends: 4186 [2023-12-02 15:27:24,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:27:24,364 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 427 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 4799 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:27:24,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 4799 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 15:27:24,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4186 states. [2023-12-02 15:27:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4186 to 3239. [2023-12-02 15:27:24,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3239 states, 2089 states have (on average 1.3106749640976543) internal successors, (2738), 2141 states have internal predecessors, (2738), 948 states have call successors, (948), 202 states have call predecessors, (948), 201 states have return successors, (1025), 915 states have call predecessors, (1025), 943 states have call successors, (1025) [2023-12-02 15:27:24,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3239 states to 3239 states and 4711 transitions. [2023-12-02 15:27:24,702 INFO L78 Accepts]: Start accepts. Automaton has 3239 states and 4711 transitions. Word has length 168 [2023-12-02 15:27:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:27:24,702 INFO L495 AbstractCegarLoop]: Abstraction has 3239 states and 4711 transitions. [2023-12-02 15:27:24,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 15:27:24,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3239 states and 4711 transitions. [2023-12-02 15:27:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-02 15:27:24,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:27:24,712 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:24,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 15:27:24,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:27:24,913 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:27:24,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:27:24,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1173630791, now seen corresponding path program 1 times [2023-12-02 15:27:24,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:27:24,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538690500] [2023-12-02 15:27:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:24,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:27:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-02 15:27:25,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:27:25,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538690500] [2023-12-02 15:27:25,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538690500] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:27:25,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984350546] [2023-12-02 15:27:25,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:25,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:27:25,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:27:25,390 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:27:25,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1f87c8-856c-4d51-b404-4ec4a3c53579/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:27:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:26,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 2292 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:27:26,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:27:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 15:27:26,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:27:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-02 15:27:26,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984350546] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:27:26,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2029009581] [2023-12-02 15:27:26,438 INFO L159 IcfgInterpreter]: Started Sifa with 150 locations of interest [2023-12-02 15:27:26,438 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:27:26,443 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:27:26,450 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:27:26,450 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:36:03,253 INFO L197 IcfgInterpreter]: Interpreting procedure __mutex_init with input of size 111 for LOIs [2023-12-02 15:36:03,274 INFO L197 IcfgInterpreter]: Interpreting procedure kzalloc with input of size 1214 for LOIs [2023-12-02 15:37:17,583 INFO L197 IcfgInterpreter]: Interpreting procedure ttusb_dec_stop_iso_xfer with input of size 321 for LOIs [2023-12-02 15:37:24,095 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_mutex_lock_interruptible_iso_mutex_of_ttusb_dec with input of size 314 for LOIs [2023-12-02 15:37:25,287 INFO L197 IcfgInterpreter]: Interpreting procedure mutex_lock_interruptible with input of size 316 for LOIs [2023-12-02 15:37:25,653 INFO L197 IcfgInterpreter]: Interpreting procedure __create_pipe with input of size 6 for LOIs [2023-12-02 15:37:25,662 INFO L197 IcfgInterpreter]: Interpreting procedure ttusb_dec_send_command with input of size 109 for LOIs [2023-12-02 15:37:28,746 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 1285 for LOIs [2023-12-02 15:38:40,780 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 1294 for LOIs [2023-12-02 15:38:58,148 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_mutex_unlock_iso_mutex_of_ttusb_dec with input of size 45 for LOIs [2023-12-02 15:38:58,159 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_error with input of size 45 for LOIs [2023-12-02 15:38:58,162 INFO L197 IcfgInterpreter]: Interpreting procedure ttusb_dec_exit_usb with input of size 164 for LOIs [2023-12-02 15:38:59,516 INFO L197 IcfgInterpreter]: Interpreting procedure usb_kill_urb with input of size 6 for LOIs [2023-12-02 15:38:59,517 INFO L197 IcfgInterpreter]: Interpreting procedure ttusb_dec_free_iso_urbs with input of size 6 for LOIs [2023-12-02 15:39:00,497 INFO L197 IcfgInterpreter]: Interpreting procedure usb_free_urb with input of size 6 for LOIs [2023-12-02 15:39:00,498 INFO L197 IcfgInterpreter]: Interpreting procedure usb_set_intfdata with input of size 1 for LOIs [2023-12-02 15:39:00,500 INFO L197 IcfgInterpreter]: Interpreting procedure get_dma_ops with input of size 10 for LOIs [2023-12-02 15:39:00,518 INFO L197 IcfgInterpreter]: Interpreting procedure ldv__builtin_expect with input of size 13 for LOIs [2023-12-02 15:39:00,521 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:40:02,860 WARN L293 SmtUtils]: Spent 1.00m on a formula simplification. DAG size of input: 1550 DAG size of output: 1537 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)