./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/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_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/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_9f4e6217-70b6-49f2-82da-f4151db0abf6/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 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:23:20,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:23:20,682 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 08:23:20,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:23:20,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:23:20,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:23:20,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:23:20,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:23:20,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:23:20,712 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:23:20,713 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:23:20,714 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:23:20,714 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:23:20,715 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 08:23:20,715 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:23:20,716 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:23:20,716 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 08:23:20,717 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 08:23:20,717 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:23:20,718 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 08:23:20,718 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 08:23:20,719 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 08:23:20,720 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:23:20,720 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:23:20,721 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 08:23:20,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:23:20,722 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:23:20,722 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:23:20,723 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:23:20,723 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:23:20,724 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:23:20,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:23:20,724 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:23:20,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:23:20,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:23:20,725 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:23:20,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:23:20,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 08:23:20,726 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 08:23:20,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 08:23:20,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:23:20,727 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 08:23:20,727 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:23:20,727 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:23:20,727 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_9f4e6217-70b6-49f2-82da-f4151db0abf6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad [2023-12-02 08:23:20,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:23:20,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:23:20,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:23:20,961 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:23:20,961 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:23:20,963 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2023-12-02 08:23:23,773 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:23:24,202 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:23:24,202 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2023-12-02 08:23:24,245 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/data/4d09f3d82/7a40823ed00840c7be3f4fd85eafa8bb/FLAGfda720933 [2023-12-02 08:23:24,261 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/data/4d09f3d82/7a40823ed00840c7be3f4fd85eafa8bb [2023-12-02 08:23:24,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:23:24,266 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:23:24,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:23:24,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:23:24,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:23:24,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:23:24" (1/1) ... [2023-12-02 08:23:24,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657bb3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:24, skipping insertion in model container [2023-12-02 08:23:24,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:23:24" (1/1) ... [2023-12-02 08:23:24,403 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:23:25,585 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_9f4e6217-70b6-49f2-82da-f4151db0abf6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2023-12-02 08:23:25,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:23:25,731 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:23:25,828 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"); [4245] [2023-12-02 08:23:25,829 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [4252] [2023-12-02 08:23:25,830 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsrl %1,%0": "=r" (r): "rm" (x), "0" (-1)); [4266] [2023-12-02 08:23:25,831 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("661:\n\tcall __sw_hweight32\n662:\n.skip -(((6651f-6641f)-(662b-661b)) > 0) * ((6651f-6641f)-(662b-661b)),0x90\n663:\n.pushsection .altinstructions,\"a\"\n .long 661b - .\n .long 6641f - .\n .word ( 4*32+23)\n .byte 663b-661b\n .byte 6651f-6641f\n .byte 663b-662b\n.popsection\n.pushsection .altinstr_replacement, \"ax\"\n6641:\n\t.byte 0xf3,0x40,0x0f,0xb8,0xc7\n6651:\n\t.popsection": "=a" (res): "D" (w)); [4275] [2023-12-02 08:23:25,927 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--32_7a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/988/dscv_tempdir/dscv/ri/32_7a/drivers/md/dm-raid.c"), "i" (791), "i" (12UL)); [5389-5390] [2023-12-02 08:23:26,073 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_9f4e6217-70b6-49f2-82da-f4151db0abf6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2023-12-02 08:23:26,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:23:26,177 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:23:26,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:26 WrapperNode [2023-12-02 08:23:26,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:23:26,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:23:26,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:23:26,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:23:26,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:26" (1/1) ... [2023-12-02 08:23:26,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:26" (1/1) ... [2023-12-02 08:23:26,415 INFO L138 Inliner]: procedures = 221, calls = 1690, calls flagged for inlining = 84, calls inlined = 76, statements flattened = 4946 [2023-12-02 08:23:26,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:23:26,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:23:26,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:23:26,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:23:26,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:26" (1/1) ... [2023-12-02 08:23:26,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:26" (1/1) ... [2023-12-02 08:23:26,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:26" (1/1) ... [2023-12-02 08:23:26,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:26" (1/1) ... [2023-12-02 08:23:26,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:26" (1/1) ... [2023-12-02 08:23:26,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:26" (1/1) ... [2023-12-02 08:23:26,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:26" (1/1) ... [2023-12-02 08:23:26,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:26" (1/1) ... [2023-12-02 08:23:26,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:23:26,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:23:26,654 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:23:26,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:23:26,655 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:26" (1/1) ... [2023-12-02 08:23:26,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:23:26,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:23:26,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:23:26,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:23:26,729 INFO L130 BoogieDeclarations]: Found specification of procedure dm_table_get_mode [2023-12-02 08:23:26,729 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_table_get_mode [2023-12-02 08:23:26,729 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2023-12-02 08:23:26,729 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2023-12-02 08:23:26,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 08:23:26,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 08:23:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 08:23:26,730 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 08:23:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-12-02 08:23:26,730 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-12-02 08:23:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_format [2023-12-02 08:23:26,730 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_format [2023-12-02 08:23:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 08:23:26,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 08:23:26,731 INFO L130 BoogieDeclarations]: Found specification of procedure raid_io_hints [2023-12-02 08:23:26,731 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_io_hints [2023-12-02 08:23:26,731 INFO L130 BoogieDeclarations]: Found specification of procedure raid_message [2023-12-02 08:23:26,731 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_message [2023-12-02 08:23:26,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 08:23:26,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 08:23:26,731 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-12-02 08:23:26,732 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-12-02 08:23:26,732 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_copies [2023-12-02 08:23:26,732 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_copies [2023-12-02 08:23:26,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 08:23:26,732 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 08:23:26,732 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 08:23:26,732 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 08:23:26,732 INFO L130 BoogieDeclarations]: Found specification of procedure context_free [2023-12-02 08:23:26,733 INFO L138 BoogieDeclarations]: Found implementation of procedure context_free [2023-12-02 08:23:26,733 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-12-02 08:23:26,733 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-12-02 08:23:26,733 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-12-02 08:23:26,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-12-02 08:23:26,733 INFO L130 BoogieDeclarations]: Found specification of procedure super_validate [2023-12-02 08:23:26,733 INFO L138 BoogieDeclarations]: Found implementation of procedure super_validate [2023-12-02 08:23:26,733 INFO L130 BoogieDeclarations]: Found specification of procedure do_table_event [2023-12-02 08:23:26,734 INFO L138 BoogieDeclarations]: Found implementation of procedure do_table_event [2023-12-02 08:23:26,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 08:23:26,734 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 08:23:26,734 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 08:23:26,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 08:23:26,734 INFO L130 BoogieDeclarations]: Found specification of procedure sync_page_io [2023-12-02 08:23:26,734 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_page_io [2023-12-02 08:23:26,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 08:23:26,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 08:23:26,735 INFO L130 BoogieDeclarations]: Found specification of procedure to_sector [2023-12-02 08:23:26,735 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sector [2023-12-02 08:23:26,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 08:23:26,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 08:23:26,735 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 08:23:26,735 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 08:23:26,735 INFO L130 BoogieDeclarations]: Found specification of procedure raid_iterate_devices [2023-12-02 08:23:26,735 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_iterate_devices [2023-12-02 08:23:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure dm_put_device [2023-12-02 08:23:26,736 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_put_device [2023-12-02 08:23:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2023-12-02 08:23:26,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2023-12-02 08:23:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 08:23:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure mddev_suspend [2023-12-02 08:23:26,736 INFO L138 BoogieDeclarations]: Found implementation of procedure mddev_suspend [2023-12-02 08:23:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 08:23:26,737 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 08:23:26,737 INFO L130 BoogieDeclarations]: Found specification of procedure super_sync [2023-12-02 08:23:26,737 INFO L138 BoogieDeclarations]: Found implementation of procedure super_sync [2023-12-02 08:23:26,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 08:23:26,737 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2023-12-02 08:23:26,737 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2023-12-02 08:23:26,737 INFO L130 BoogieDeclarations]: Found specification of procedure md_wakeup_thread [2023-12-02 08:23:26,737 INFO L138 BoogieDeclarations]: Found implementation of procedure md_wakeup_thread [2023-12-02 08:23:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 08:23:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 08:23:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 08:23:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure raid_merge [2023-12-02 08:23:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_merge [2023-12-02 08:23:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 08:23:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 08:23:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure raid_map [2023-12-02 08:23:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_map [2023-12-02 08:23:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:23:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 08:23:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2023-12-02 08:23:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure strcasecmp [2023-12-02 08:23:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure scnprintf [2023-12-02 08:23:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprintf [2023-12-02 08:23:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure md_stop [2023-12-02 08:23:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure md_stop [2023-12-02 08:23:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure raid_status [2023-12-02 08:23:26,740 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_status [2023-12-02 08:23:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2023-12-02 08:23:26,740 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2023-12-02 08:23:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 08:23:26,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 08:23:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 08:23:26,740 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 08:23:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 08:23:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure raid_dtr [2023-12-02 08:23:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_dtr [2023-12-02 08:23:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure dm_get_device [2023-12-02 08:23:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_get_device [2023-12-02 08:23:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:23:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:23:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 08:23:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 08:23:27,224 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:23:27,227 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:23:27,618 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 08:23:31,263 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:23:32,390 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:23:32,390 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 08:23:32,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:23:32 BoogieIcfgContainer [2023-12-02 08:23:32,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:23:32,395 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:23:32,395 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:23:32,398 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:23:32,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:23:24" (1/3) ... [2023-12-02 08:23:32,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c96eb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:23:32, skipping insertion in model container [2023-12-02 08:23:32,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:23:26" (2/3) ... [2023-12-02 08:23:32,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c96eb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:23:32, skipping insertion in model container [2023-12-02 08:23:32,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:23:32" (3/3) ... [2023-12-02 08:23:32,401 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2023-12-02 08:23:32,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:23:32,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 08:23:32,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:23:32,506 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;@4ff856f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:23:32,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 08:23:32,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 1049 states, 735 states have (on average 1.4408163265306122) internal successors, (1059), 756 states have internal predecessors, (1059), 267 states have call successors, (267), 46 states have call predecessors, (267), 45 states have return successors, (263), 259 states have call predecessors, (263), 263 states have call successors, (263) [2023-12-02 08:23:32,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-02 08:23:32,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:32,534 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:32,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:23:32,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:32,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1106317178, now seen corresponding path program 1 times [2023-12-02 08:23:32,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:23:32,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385257152] [2023-12-02 08:23:32,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:32,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:23:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-12-02 08:23:33,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:23:33,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385257152] [2023-12-02 08:23:33,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385257152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:33,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:23:33,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:23:33,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097898231] [2023-12-02 08:23:33,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:33,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:23:33,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:23:33,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:23:33,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:23:33,466 INFO L87 Difference]: Start difference. First operand has 1049 states, 735 states have (on average 1.4408163265306122) internal successors, (1059), 756 states have internal predecessors, (1059), 267 states have call successors, (267), 46 states have call predecessors, (267), 45 states have return successors, (263), 259 states have call predecessors, (263), 263 states have call successors, (263) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 08:23:36,100 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 08:23:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:39,476 INFO L93 Difference]: Finished difference Result 3051 states and 4635 transitions. [2023-12-02 08:23:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:23:39,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 170 [2023-12-02 08:23:39,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:39,512 INFO L225 Difference]: With dead ends: 3051 [2023-12-02 08:23:39,512 INFO L226 Difference]: Without dead ends: 2023 [2023-12-02 08:23:39,523 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 08:23:39,527 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 1498 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:39,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 2862 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 302 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2023-12-02 08:23:39,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2023-12-02 08:23:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2020. [2023-12-02 08:23:39,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1433 states have (on average 1.4375436147941383) internal successors, (2060), 1459 states have internal predecessors, (2060), 501 states have call successors, (501), 86 states have call predecessors, (501), 85 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2023-12-02 08:23:39,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3057 transitions. [2023-12-02 08:23:39,712 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3057 transitions. Word has length 170 [2023-12-02 08:23:39,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:39,714 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 3057 transitions. [2023-12-02 08:23:39,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 08:23:39,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3057 transitions. [2023-12-02 08:23:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-02 08:23:39,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:39,721 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:39,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 08:23:39,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:23:39,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:39,723 INFO L85 PathProgramCache]: Analyzing trace with hash -35166643, now seen corresponding path program 1 times [2023-12-02 08:23:39,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:23:39,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479397382] [2023-12-02 08:23:39,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:39,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:23:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-12-02 08:23:40,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:23:40,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479397382] [2023-12-02 08:23:40,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479397382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:40,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:23:40,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:23:40,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921162479] [2023-12-02 08:23:40,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:40,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:23:40,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:23:40,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:23:40,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:23:40,058 INFO L87 Difference]: Start difference. First operand 2020 states and 3057 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 08:23:42,852 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 08:23:43,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:43,438 INFO L93 Difference]: Finished difference Result 2022 states and 3058 transitions. [2023-12-02 08:23:43,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:23:43,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 177 [2023-12-02 08:23:43,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:43,456 INFO L225 Difference]: With dead ends: 2022 [2023-12-02 08:23:43,457 INFO L226 Difference]: Without dead ends: 2019 [2023-12-02 08:23:43,459 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 08:23:43,461 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1525 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:43,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1421 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 08:23:43,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2023-12-02 08:23:43,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2023-12-02 08:23:43,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 1433 states have (on average 1.4368457780879273) internal successors, (2059), 1458 states have internal predecessors, (2059), 500 states have call successors, (500), 86 states have call predecessors, (500), 85 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2023-12-02 08:23:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3055 transitions. [2023-12-02 08:23:43,596 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3055 transitions. Word has length 177 [2023-12-02 08:23:43,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:43,597 INFO L495 AbstractCegarLoop]: Abstraction has 2019 states and 3055 transitions. [2023-12-02 08:23:43,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 08:23:43,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3055 transitions. [2023-12-02 08:23:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-02 08:23:43,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:43,602 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:43,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 08:23:43,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:23:43,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:43,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1090547803, now seen corresponding path program 1 times [2023-12-02 08:23:43,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:23:43,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576559326] [2023-12-02 08:23:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:43,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:23:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:43,963 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-12-02 08:23:43,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:23:43,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576559326] [2023-12-02 08:23:43,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576559326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:43,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:23:43,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:23:43,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683850949] [2023-12-02 08:23:43,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:43,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:23:43,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:23:43,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:23:43,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:23:43,967 INFO L87 Difference]: Start difference. First operand 2019 states and 3055 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 08:23:47,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:23:47,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:47,807 INFO L93 Difference]: Finished difference Result 2021 states and 3056 transitions. [2023-12-02 08:23:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:23:47,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 178 [2023-12-02 08:23:47,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:47,824 INFO L225 Difference]: With dead ends: 2021 [2023-12-02 08:23:47,825 INFO L226 Difference]: Without dead ends: 2018 [2023-12-02 08:23:47,827 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 08:23:47,828 INFO L413 NwaCegarLoop]: 1419 mSDtfsCounter, 1522 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:47,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1419 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2023-12-02 08:23:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2023-12-02 08:23:47,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 2018. [2023-12-02 08:23:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1433 states have (on average 1.4361479413817166) internal successors, (2058), 1457 states have internal predecessors, (2058), 499 states have call successors, (499), 86 states have call predecessors, (499), 85 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2023-12-02 08:23:47,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3053 transitions. [2023-12-02 08:23:47,957 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3053 transitions. Word has length 178 [2023-12-02 08:23:47,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:47,958 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 3053 transitions. [2023-12-02 08:23:47,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 08:23:47,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3053 transitions. [2023-12-02 08:23:47,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-02 08:23:47,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:47,962 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:47,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 08:23:47,962 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:23:47,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:47,963 INFO L85 PathProgramCache]: Analyzing trace with hash 552379472, now seen corresponding path program 1 times [2023-12-02 08:23:47,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:23:47,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019426304] [2023-12-02 08:23:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:47,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:23:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-12-02 08:23:48,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:23:48,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019426304] [2023-12-02 08:23:48,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019426304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:48,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:23:48,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:23:48,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765288404] [2023-12-02 08:23:48,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:48,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:23:48,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:23:48,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:23:48,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:23:48,254 INFO L87 Difference]: Start difference. First operand 2018 states and 3053 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 08:23:51,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:23:51,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:51,737 INFO L93 Difference]: Finished difference Result 2020 states and 3054 transitions. [2023-12-02 08:23:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:23:51,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 179 [2023-12-02 08:23:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:51,754 INFO L225 Difference]: With dead ends: 2020 [2023-12-02 08:23:51,754 INFO L226 Difference]: Without dead ends: 2017 [2023-12-02 08:23:51,756 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 08:23:51,757 INFO L413 NwaCegarLoop]: 1417 mSDtfsCounter, 1519 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:51,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1417 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2023-12-02 08:23:51,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2023-12-02 08:23:51,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2017. [2023-12-02 08:23:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 1433 states have (on average 1.435450104675506) internal successors, (2057), 1456 states have internal predecessors, (2057), 498 states have call successors, (498), 86 states have call predecessors, (498), 85 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2023-12-02 08:23:51,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 3051 transitions. [2023-12-02 08:23:51,892 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 3051 transitions. Word has length 179 [2023-12-02 08:23:51,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:51,893 INFO L495 AbstractCegarLoop]: Abstraction has 2017 states and 3051 transitions. [2023-12-02 08:23:51,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 08:23:51,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 3051 transitions. [2023-12-02 08:23:51,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-02 08:23:51,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:51,897 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:51,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 08:23:51,897 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:23:51,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:51,898 INFO L85 PathProgramCache]: Analyzing trace with hash -56477688, now seen corresponding path program 1 times [2023-12-02 08:23:51,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:23:51,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889031328] [2023-12-02 08:23:51,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:51,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:23:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-12-02 08:23:52,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:23:52,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889031328] [2023-12-02 08:23:52,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889031328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:52,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:23:52,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:23:52,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240405254] [2023-12-02 08:23:52,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:52,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:23:52,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:23:52,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:23:52,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:23:52,198 INFO L87 Difference]: Start difference. First operand 2017 states and 3051 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 08:23:56,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:23:58,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:23:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:58,976 INFO L93 Difference]: Finished difference Result 3977 states and 6024 transitions. [2023-12-02 08:23:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:23:58,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 180 [2023-12-02 08:23:58,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:59,001 INFO L225 Difference]: With dead ends: 3977 [2023-12-02 08:23:59,001 INFO L226 Difference]: Without dead ends: 3968 [2023-12-02 08:23:59,003 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 08:23:59,005 INFO L413 NwaCegarLoop]: 1419 mSDtfsCounter, 1498 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:59,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 2788 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2023-12-02 08:23:59,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2023-12-02 08:23:59,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3968. [2023-12-02 08:23:59,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 2830 states have (on average 1.4378091872791519) internal successors, (4069), 2873 states have internal predecessors, (4069), 972 states have call successors, (972), 168 states have call predecessors, (972), 165 states have return successors, (970), 952 states have call predecessors, (970), 970 states have call successors, (970) [2023-12-02 08:23:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 6011 transitions. [2023-12-02 08:23:59,195 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 6011 transitions. Word has length 180 [2023-12-02 08:23:59,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:59,196 INFO L495 AbstractCegarLoop]: Abstraction has 3968 states and 6011 transitions. [2023-12-02 08:23:59,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 08:23:59,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 6011 transitions. [2023-12-02 08:23:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-02 08:23:59,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:59,207 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 3, 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] [2023-12-02 08:23:59,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 08:23:59,208 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:23:59,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:59,208 INFO L85 PathProgramCache]: Analyzing trace with hash 987938777, now seen corresponding path program 1 times [2023-12-02 08:23:59,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:23:59,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467728041] [2023-12-02 08:23:59,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:59,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:23:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-12-02 08:23:59,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:23:59,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467728041] [2023-12-02 08:23:59,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467728041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:59,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:23:59,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:23:59,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905536963] [2023-12-02 08:23:59,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:59,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:23:59,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:23:59,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:23:59,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:23:59,502 INFO L87 Difference]: Start difference. First operand 3968 states and 6011 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-02 08:24:04,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:24:06,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:24:06,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:24:06,858 INFO L93 Difference]: Finished difference Result 8078 states and 12227 transitions. [2023-12-02 08:24:06,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:24:06,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 258 [2023-12-02 08:24:06,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:24:06,878 INFO L225 Difference]: With dead ends: 8078 [2023-12-02 08:24:06,878 INFO L226 Difference]: Without dead ends: 4145 [2023-12-02 08:24:06,891 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 08:24:06,892 INFO L413 NwaCegarLoop]: 1427 mSDtfsCounter, 126 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:24:06,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 2690 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 396 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2023-12-02 08:24:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2023-12-02 08:24:07,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 4137. [2023-12-02 08:24:07,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4137 states, 2969 states have (on average 1.4392051195688784) internal successors, (4273), 3012 states have internal predecessors, (4273), 992 states have call successors, (992), 178 states have call predecessors, (992), 175 states have return successors, (990), 972 states have call predecessors, (990), 990 states have call successors, (990) [2023-12-02 08:24:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 6255 transitions. [2023-12-02 08:24:07,133 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 6255 transitions. Word has length 258 [2023-12-02 08:24:07,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:24:07,134 INFO L495 AbstractCegarLoop]: Abstraction has 4137 states and 6255 transitions. [2023-12-02 08:24:07,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-02 08:24:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 6255 transitions. [2023-12-02 08:24:07,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-02 08:24:07,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:24:07,152 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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] [2023-12-02 08:24:07,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 08:24:07,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:24:07,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:24:07,153 INFO L85 PathProgramCache]: Analyzing trace with hash -203108753, now seen corresponding path program 1 times [2023-12-02 08:24:07,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:24:07,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953367147] [2023-12-02 08:24:07,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:24:07,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:24:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:24:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2023-12-02 08:24:07,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:24:07,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953367147] [2023-12-02 08:24:07,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953367147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:24:07,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:24:07,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:24:07,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892401906] [2023-12-02 08:24:07,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:24:07,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:24:07,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:24:07,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:24:07,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:24:07,577 INFO L87 Difference]: Start difference. First operand 4137 states and 6255 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 08:24:08,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:24:14,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:24:16,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:24:17,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:24:17,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:24:17,966 INFO L93 Difference]: Finished difference Result 9264 states and 14147 transitions. [2023-12-02 08:24:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 08:24:17,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 276 [2023-12-02 08:24:17,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:24:18,002 INFO L225 Difference]: With dead ends: 9264 [2023-12-02 08:24:18,002 INFO L226 Difference]: Without dead ends: 5175 [2023-12-02 08:24:18,021 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 08:24:18,022 INFO L413 NwaCegarLoop]: 1767 mSDtfsCounter, 261 mSDsluCounter, 3203 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 4970 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:24:18,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 4970 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 498 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2023-12-02 08:24:18,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5175 states. [2023-12-02 08:24:18,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5175 to 4145. [2023-12-02 08:24:18,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 2977 states have (on average 1.438024857238831) internal successors, (4281), 3020 states have internal predecessors, (4281), 992 states have call successors, (992), 178 states have call predecessors, (992), 175 states have return successors, (990), 972 states have call predecessors, (990), 990 states have call successors, (990) [2023-12-02 08:24:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 6263 transitions. [2023-12-02 08:24:18,325 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 6263 transitions. Word has length 276 [2023-12-02 08:24:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:24:18,326 INFO L495 AbstractCegarLoop]: Abstraction has 4145 states and 6263 transitions. [2023-12-02 08:24:18,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 08:24:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 6263 transitions. [2023-12-02 08:24:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-02 08:24:18,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:24:18,342 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 08:24:18,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 08:24:18,343 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:24:18,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:24:18,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1459628118, now seen corresponding path program 1 times [2023-12-02 08:24:18,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:24:18,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113372256] [2023-12-02 08:24:18,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:24:18,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:24:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:24:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2023-12-02 08:24:18,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:24:18,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113372256] [2023-12-02 08:24:18,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113372256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:24:18,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:24:18,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:24:18,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64290673] [2023-12-02 08:24:18,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:24:18,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:24:18,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:24:18,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:24:18,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:24:18,886 INFO L87 Difference]: Start difference. First operand 4145 states and 6263 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 08:24:20,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:24:22,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:24:25,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:24:25,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:24:25,925 INFO L93 Difference]: Finished difference Result 9606 states and 14711 transitions. [2023-12-02 08:24:25,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:24:25,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 291 [2023-12-02 08:24:25,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:24:25,952 INFO L225 Difference]: With dead ends: 9606 [2023-12-02 08:24:25,952 INFO L226 Difference]: Without dead ends: 5509 [2023-12-02 08:24:25,964 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 08:24:25,964 INFO L413 NwaCegarLoop]: 1893 mSDtfsCounter, 358 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 5272 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-02 08:24:25,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 5272 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-02 08:24:25,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5509 states. [2023-12-02 08:24:26,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5509 to 4153. [2023-12-02 08:24:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4153 states, 2985 states have (on average 1.4368509212730318) internal successors, (4289), 3028 states have internal predecessors, (4289), 992 states have call successors, (992), 178 states have call predecessors, (992), 175 states have return successors, (990), 972 states have call predecessors, (990), 990 states have call successors, (990) [2023-12-02 08:24:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 6271 transitions. [2023-12-02 08:24:26,199 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 6271 transitions. Word has length 291 [2023-12-02 08:24:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:24:26,200 INFO L495 AbstractCegarLoop]: Abstraction has 4153 states and 6271 transitions. [2023-12-02 08:24:26,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 08:24:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 6271 transitions. [2023-12-02 08:24:26,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-02 08:24:26,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:24:26,217 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:24:26,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 08:24:26,217 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:24:26,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:24:26,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1660206770, now seen corresponding path program 1 times [2023-12-02 08:24:26,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:24:26,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801641506] [2023-12-02 08:24:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:24:26,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:24:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:24:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2023-12-02 08:24:26,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:24:26,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801641506] [2023-12-02 08:24:26,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801641506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:24:26,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:24:26,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:24:26,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665802625] [2023-12-02 08:24:26,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:24:26,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:24:26,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:24:26,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:24:26,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:24:26,635 INFO L87 Difference]: Start difference. First operand 4153 states and 6271 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-02 08:24:31,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:24:31,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:24:31,372 INFO L93 Difference]: Finished difference Result 8362 states and 12644 transitions. [2023-12-02 08:24:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:24:31,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 296 [2023-12-02 08:24:31,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:24:31,386 INFO L225 Difference]: With dead ends: 8362 [2023-12-02 08:24:31,386 INFO L226 Difference]: Without dead ends: 4257 [2023-12-02 08:24:31,397 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 08:24:31,397 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 27 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-02 08:24:31,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2829 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-02 08:24:31,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4257 states. [2023-12-02 08:24:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4257 to 4229. [2023-12-02 08:24:31,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4229 states, 3045 states have (on average 1.4374384236453202) internal successors, (4377), 3088 states have internal predecessors, (4377), 1008 states have call successors, (1008), 178 states have call predecessors, (1008), 175 states have return successors, (1006), 988 states have call predecessors, (1006), 1006 states have call successors, (1006) [2023-12-02 08:24:31,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4229 states to 4229 states and 6391 transitions. [2023-12-02 08:24:31,675 INFO L78 Accepts]: Start accepts. Automaton has 4229 states and 6391 transitions. Word has length 296 [2023-12-02 08:24:31,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:24:31,676 INFO L495 AbstractCegarLoop]: Abstraction has 4229 states and 6391 transitions. [2023-12-02 08:24:31,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-02 08:24:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4229 states and 6391 transitions. [2023-12-02 08:24:31,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-12-02 08:24:31,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:24:31,690 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:24:31,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 08:24:31,690 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:24:31,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:24:31,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1193856895, now seen corresponding path program 1 times [2023-12-02 08:24:31,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:24:31,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590513873] [2023-12-02 08:24:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:24:31,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:24:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:24:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2023-12-02 08:24:32,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:24:32,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590513873] [2023-12-02 08:24:32,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590513873] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:24:32,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78803400] [2023-12-02 08:24:32,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:24:32,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:24:32,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:24:32,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:24:32,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 08:24:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:24:33,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 3749 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 08:24:33,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:24:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2023-12-02 08:24:34,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:24:34,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78803400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:24:34,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 08:24:34,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-12-02 08:24:34,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281577867] [2023-12-02 08:24:34,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:24:34,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 08:24:34,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:24:34,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 08:24:34,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:24:34,036 INFO L87 Difference]: Start difference. First operand 4229 states and 6391 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-02 08:24:37,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:24:38,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:24:44,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:24:46,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:24:48,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:24:52,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:24:52,684 INFO L93 Difference]: Finished difference Result 11438 states and 17411 transitions. [2023-12-02 08:24:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:24:52,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 297 [2023-12-02 08:24:52,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:24:52,713 INFO L225 Difference]: With dead ends: 11438 [2023-12-02 08:24:52,713 INFO L226 Difference]: Without dead ends: 11430 [2023-12-02 08:24:52,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 08:24:52,717 INFO L413 NwaCegarLoop]: 2753 mSDtfsCounter, 3617 mSDsluCounter, 4224 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 118 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3668 SdHoareTripleChecker+Valid, 6977 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:24:52,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3668 Valid, 6977 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2604 Invalid, 3 Unknown, 0 Unchecked, 18.1s Time] [2023-12-02 08:24:52,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11430 states. [2023-12-02 08:24:53,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11430 to 10480. [2023-12-02 08:24:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10480 states, 7554 states have (on average 1.4410908128144029) internal successors, (10886), 7679 states have internal predecessors, (10886), 2493 states have call successors, (2493), 437 states have call predecessors, (2493), 432 states have return successors, (2491), 2429 states have call predecessors, (2491), 2491 states have call successors, (2491) [2023-12-02 08:24:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10480 states to 10480 states and 15870 transitions. [2023-12-02 08:24:53,250 INFO L78 Accepts]: Start accepts. Automaton has 10480 states and 15870 transitions. Word has length 297 [2023-12-02 08:24:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:24:53,251 INFO L495 AbstractCegarLoop]: Abstraction has 10480 states and 15870 transitions. [2023-12-02 08:24:53,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-02 08:24:53,251 INFO L276 IsEmpty]: Start isEmpty. Operand 10480 states and 15870 transitions. [2023-12-02 08:24:53,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-02 08:24:53,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:24:53,266 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:24:53,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-02 08:24:53,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:24:53,467 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:24:53,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:24:53,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1818550302, now seen corresponding path program 1 times [2023-12-02 08:24:53,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:24:53,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647280687] [2023-12-02 08:24:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:24:53,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:24:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:24:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2023-12-02 08:24:54,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:24:54,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647280687] [2023-12-02 08:24:54,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647280687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:24:54,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:24:54,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:24:54,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270665371] [2023-12-02 08:24:54,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:24:54,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:24:54,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:24:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:24:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:24:54,210 INFO L87 Difference]: Start difference. First operand 10480 states and 15870 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-02 08:24:55,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:24:59,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:25:01,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:25:01,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:25:01,841 INFO L93 Difference]: Finished difference Result 20942 states and 31728 transitions. [2023-12-02 08:25:01,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:25:01,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 298 [2023-12-02 08:25:01,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:25:01,867 INFO L225 Difference]: With dead ends: 20942 [2023-12-02 08:25:01,867 INFO L226 Difference]: Without dead ends: 10510 [2023-12-02 08:25:01,888 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 08:25:01,889 INFO L413 NwaCegarLoop]: 1416 mSDtfsCounter, 2 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:25:01,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2829 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 296 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2023-12-02 08:25:01,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10510 states. [2023-12-02 08:25:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10510 to 10490. [2023-12-02 08:25:02,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10490 states, 7564 states have (on average 1.4405076679005817) internal successors, (10896), 7689 states have internal predecessors, (10896), 2493 states have call successors, (2493), 437 states have call predecessors, (2493), 432 states have return successors, (2491), 2429 states have call predecessors, (2491), 2491 states have call successors, (2491) [2023-12-02 08:25:02,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10490 states to 10490 states and 15880 transitions. [2023-12-02 08:25:02,451 INFO L78 Accepts]: Start accepts. Automaton has 10490 states and 15880 transitions. Word has length 298 [2023-12-02 08:25:02,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:25:02,451 INFO L495 AbstractCegarLoop]: Abstraction has 10490 states and 15880 transitions. [2023-12-02 08:25:02,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-02 08:25:02,452 INFO L276 IsEmpty]: Start isEmpty. Operand 10490 states and 15880 transitions. [2023-12-02 08:25:02,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-12-02 08:25:02,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:25:02,465 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:25:02,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 08:25:02,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:25:02,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:25:02,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1622142050, now seen corresponding path program 1 times [2023-12-02 08:25:02,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:25:02,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130447379] [2023-12-02 08:25:02,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:25:02,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:25:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:25:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2023-12-02 08:25:05,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:25:05,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130447379] [2023-12-02 08:25:05,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130447379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:25:05,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:25:05,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 08:25:05,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373702304] [2023-12-02 08:25:05,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:25:05,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 08:25:05,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:25:05,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 08:25:05,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-02 08:25:05,846 INFO L87 Difference]: Start difference. First operand 10490 states and 15880 transitions. Second operand has 12 states, 7 states have (on average 17.571428571428573) internal successors, (123), 9 states have internal predecessors, (123), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2023-12-02 08:25:10,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:25:19,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:25:21,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:25:22,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:25:23,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:25:23,559 INFO L93 Difference]: Finished difference Result 23367 states and 35701 transitions. [2023-12-02 08:25:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 08:25:23,560 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 17.571428571428573) internal successors, (123), 9 states have internal predecessors, (123), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) Word has length 299 [2023-12-02 08:25:23,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:25:23,594 INFO L225 Difference]: With dead ends: 23367 [2023-12-02 08:25:23,594 INFO L226 Difference]: Without dead ends: 12925 [2023-12-02 08:25:23,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-12-02 08:25:23,611 INFO L413 NwaCegarLoop]: 1744 mSDtfsCounter, 249 mSDsluCounter, 17133 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 18877 SdHoareTripleChecker+Invalid, 1865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:25:23,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 18877 Invalid, 1865 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1861 Invalid, 2 Unknown, 0 Unchecked, 17.1s Time] [2023-12-02 08:25:23,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12925 states. [2023-12-02 08:25:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12925 to 10530. [2023-12-02 08:25:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10530 states, 7594 states have (on average 1.4387674479852515) internal successors, (10926), 7719 states have internal predecessors, (10926), 2503 states have call successors, (2503), 437 states have call predecessors, (2503), 432 states have return successors, (2501), 2439 states have call predecessors, (2501), 2501 states have call successors, (2501) [2023-12-02 08:25:24,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10530 states to 10530 states and 15930 transitions. [2023-12-02 08:25:24,330 INFO L78 Accepts]: Start accepts. Automaton has 10530 states and 15930 transitions. Word has length 299 [2023-12-02 08:25:24,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:25:24,331 INFO L495 AbstractCegarLoop]: Abstraction has 10530 states and 15930 transitions. [2023-12-02 08:25:24,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 17.571428571428573) internal successors, (123), 9 states have internal predecessors, (123), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2023-12-02 08:25:24,331 INFO L276 IsEmpty]: Start isEmpty. Operand 10530 states and 15930 transitions. [2023-12-02 08:25:24,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-02 08:25:24,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:25:24,345 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:25:24,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 08:25:24,345 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:25:24,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:25:24,346 INFO L85 PathProgramCache]: Analyzing trace with hash -15183351, now seen corresponding path program 1 times [2023-12-02 08:25:24,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:25:24,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258259203] [2023-12-02 08:25:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:25:24,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:25:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:25:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2023-12-02 08:25:25,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:25:25,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258259203] [2023-12-02 08:25:25,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258259203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:25:25,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:25:25,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:25:25,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737656864] [2023-12-02 08:25:25,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:25:25,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 08:25:25,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:25:25,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 08:25:25,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:25:25,951 INFO L87 Difference]: Start difference. First operand 10530 states and 15930 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-02 08:25:28,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:25:33,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:25:35,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:25:36,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:25:36,993 INFO L93 Difference]: Finished difference Result 21082 states and 31908 transitions. [2023-12-02 08:25:36,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 08:25:36,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) Word has length 303 [2023-12-02 08:25:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:25:37,026 INFO L225 Difference]: With dead ends: 21082 [2023-12-02 08:25:37,026 INFO L226 Difference]: Without dead ends: 10600 [2023-12-02 08:25:37,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:25:37,049 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 2 mSDsluCounter, 4248 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5666 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-12-02 08:25:37,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5666 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 591 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2023-12-02 08:25:37,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10600 states. [2023-12-02 08:25:37,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10600 to 10570. [2023-12-02 08:25:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10570 states, 7624 states have (on average 1.43704092339979) internal successors, (10956), 7749 states have internal predecessors, (10956), 2503 states have call successors, (2503), 437 states have call predecessors, (2503), 442 states have return successors, (2531), 2449 states have call predecessors, (2531), 2501 states have call successors, (2531) [2023-12-02 08:25:37,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10570 states to 10570 states and 15990 transitions. [2023-12-02 08:25:37,715 INFO L78 Accepts]: Start accepts. Automaton has 10570 states and 15990 transitions. Word has length 303 [2023-12-02 08:25:37,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:25:37,716 INFO L495 AbstractCegarLoop]: Abstraction has 10570 states and 15990 transitions. [2023-12-02 08:25:37,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-02 08:25:37,716 INFO L276 IsEmpty]: Start isEmpty. Operand 10570 states and 15990 transitions. [2023-12-02 08:25:37,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-02 08:25:37,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:25:37,731 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:25:37,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 08:25:37,732 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:25:37,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:25:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2026806736, now seen corresponding path program 1 times [2023-12-02 08:25:37,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:25:37,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301362938] [2023-12-02 08:25:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:25:37,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:25:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:25:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2023-12-02 08:25:40,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:25:40,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301362938] [2023-12-02 08:25:40,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301362938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:25:40,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:25:40,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 08:25:40,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97119916] [2023-12-02 08:25:40,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:25:40,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 08:25:40,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:25:40,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 08:25:40,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-02 08:25:40,282 INFO L87 Difference]: Start difference. First operand 10570 states and 15990 transitions. Second operand has 12 states, 7 states have (on average 18.285714285714285) internal successors, (128), 9 states have internal predecessors, (128), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 5 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-02 08:25:41,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:25:43,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:25:44,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:25:47,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:25:49,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:25:53,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:26:00,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:26:02,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:26:03,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 08:26:04,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:26:04,593 INFO L93 Difference]: Finished difference Result 23527 states and 35921 transitions. [2023-12-02 08:26:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 08:26:04,594 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 18.285714285714285) internal successors, (128), 9 states have internal predecessors, (128), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 5 states have call predecessors, (32), 4 states have call successors, (32) Word has length 306 [2023-12-02 08:26:04,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:26:04,633 INFO L225 Difference]: With dead ends: 23527 [2023-12-02 08:26:04,634 INFO L226 Difference]: Without dead ends: 13005 [2023-12-02 08:26:04,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-12-02 08:26:04,658 INFO L413 NwaCegarLoop]: 1747 mSDtfsCounter, 249 mSDsluCounter, 17153 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 18900 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2023-12-02 08:26:04,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 18900 Invalid, 1886 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1882 Invalid, 2 Unknown, 0 Unchecked, 23.6s Time] [2023-12-02 08:26:04,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13005 states. [2023-12-02 08:26:05,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13005 to 10570. [2023-12-02 08:26:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10570 states, 7624 states have (on average 1.43704092339979) internal successors, (10956), 7749 states have internal predecessors, (10956), 2503 states have call successors, (2503), 437 states have call predecessors, (2503), 442 states have return successors, (2531), 2449 states have call predecessors, (2531), 2501 states have call successors, (2531) [2023-12-02 08:26:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10570 states to 10570 states and 15990 transitions. [2023-12-02 08:26:05,249 INFO L78 Accepts]: Start accepts. Automaton has 10570 states and 15990 transitions. Word has length 306 [2023-12-02 08:26:05,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:26:05,250 INFO L495 AbstractCegarLoop]: Abstraction has 10570 states and 15990 transitions. [2023-12-02 08:26:05,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 18.285714285714285) internal successors, (128), 9 states have internal predecessors, (128), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 5 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-02 08:26:05,250 INFO L276 IsEmpty]: Start isEmpty. Operand 10570 states and 15990 transitions. [2023-12-02 08:26:05,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-12-02 08:26:05,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:26:05,264 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:05,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 08:26:05,264 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:26:05,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:26:05,265 INFO L85 PathProgramCache]: Analyzing trace with hash -841168891, now seen corresponding path program 1 times [2023-12-02 08:26:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:26:05,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081985882] [2023-12-02 08:26:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:05,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:26:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:06,868 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-12-02 08:26:06,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:26:06,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081985882] [2023-12-02 08:26:06,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081985882] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:26:06,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480675156] [2023-12-02 08:26:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:06,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:26:06,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:26:06,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:26:06,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4e6217-70b6-49f2-82da-f4151db0abf6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 08:26:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:07,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 3938 conjuncts, 140 conjunts are in the unsatisfiable core [2023-12-02 08:26:07,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:26:08,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 08:26:08,241 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2023-12-02 08:26:08,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2023-12-02 08:26:08,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-12-02 08:26:08,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 9 [2023-12-02 08:26:08,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-12-02 08:26:08,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-12-02 08:26:08,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-12-02 08:26:08,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 08:26:08,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-12-02 08:26:08,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-12-02 08:26:08,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 08:26:08,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-12-02 08:26:08,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-12-02 08:26:08,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 08:26:08,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-12-02 08:26:08,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-12-02 08:26:08,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-12-02 08:26:08,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-12-02 08:26:08,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 08:26:08,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-12-02 08:26:08,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 08:26:08,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-12-02 08:26:08,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 08:26:08,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-12-02 08:26:08,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:08,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-12-02 08:26:08,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-02 08:26:08,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-02 08:26:08,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-02 08:26:08,874 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 08:26:08,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-12-02 08:26:09,156 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-12-02 08:26:09,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1278 treesize of output 1179 [2023-12-02 08:26:09,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 649 treesize of output 601 [2023-12-02 08:26:09,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 601 treesize of output 561 [2023-12-02 08:26:09,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 23 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 71 [2023-12-02 08:26:10,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 23 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 71 [2023-12-02 08:26:10,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 23 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 75 [2023-12-02 08:26:10,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 67 [2023-12-02 08:26:10,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:10,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:10,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 23 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2023-12-02 08:26:10,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:10,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:10,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 23 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2023-12-02 08:26:10,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:10,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:26:10,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 23 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2023-12-02 08:26:11,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2023-12-02 08:26:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 94 proven. 5 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2023-12-02 08:26:11,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:26:12,033 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2504 (Array Int Int)) (v_ArrVal_2502 (Array Int Int))) (or (not (= (let ((.cse0 (+ |c_ULTIMATE.start_raid_ctr_~rs~5#1.offset| 1918))) (store (select |c_#memory_int| |c_ULTIMATE.start_raid_ctr_~rs~5#1.base|) .cse0 (select v_ArrVal_2502 .cse0))) v_ArrVal_2502)) (< 0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_raid_ctr_~rs~5#1.base| v_ArrVal_2502) |c_ULTIMATE.start_raid_ctr_~ti#1.base| v_ArrVal_2504) |c_ULTIMATE.start_raid_ctr_~rs~5#1.base|) (+ |c_ULTIMATE.start_raid_ctr_~rs~5#1.offset| 450))))) is different from false [2023-12-02 08:26:12,123 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_raid_ctr_~rs~5#1.offset| 450)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_raid_ctr_~rs~5#1.base|)) (.cse2 (+ |c_ULTIMATE.start_raid_ctr_~rs~5#1.offset| 1910)) (.cse0 (+ |c_ULTIMATE.start_raid_ctr_~rs~5#1.offset| 1918))) (and (forall ((v_INIT_LIST_HEAD_~list.offset_6 Int) (v_ArrVal_2504 (Array Int Int)) (v_ArrVal_2502 (Array Int Int))) (or (< v_INIT_LIST_HEAD_~list.offset_6 (+ |c_ULTIMATE.start_raid_ctr_~rs~5#1.offset| 1902)) (= .cse0 v_INIT_LIST_HEAD_~list.offset_6) (< 0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_raid_ctr_~rs~5#1.base| v_ArrVal_2502) |c_ULTIMATE.start_raid_ctr_~ti#1.base| v_ArrVal_2504) |c_ULTIMATE.start_raid_ctr_~rs~5#1.base|) .cse1)) (= .cse2 v_INIT_LIST_HEAD_~list.offset_6) (not (= v_ArrVal_2502 (store (let ((.cse4 (+ 8 v_INIT_LIST_HEAD_~list.offset_6))) (store (store .cse3 v_INIT_LIST_HEAD_~list.offset_6 (select v_ArrVal_2502 v_INIT_LIST_HEAD_~list.offset_6)) .cse4 (select v_ArrVal_2502 .cse4))) .cse0 (select v_ArrVal_2502 .cse0)))))) (forall ((v_ArrVal_2504 (Array Int Int)) (v_ArrVal_2502 (Array Int Int))) (or (not (= (store (let ((.cse5 (+ 1926 |c_ULTIMATE.start_raid_ctr_~rs~5#1.offset|))) (store .cse3 .cse5 (select v_ArrVal_2502 .cse5))) .cse0 (select v_ArrVal_2502 .cse0)) v_ArrVal_2502)) (< 0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_raid_ctr_~rs~5#1.base| v_ArrVal_2502) |c_ULTIMATE.start_raid_ctr_~ti#1.base| v_ArrVal_2504) |c_ULTIMATE.start_raid_ctr_~rs~5#1.base|) .cse1)))) (forall ((v_ArrVal_2504 (Array Int Int)) (v_ArrVal_2502 (Array Int Int))) (or (< 0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_raid_ctr_~rs~5#1.base| v_ArrVal_2502) |c_ULTIMATE.start_raid_ctr_~ti#1.base| v_ArrVal_2504) |c_ULTIMATE.start_raid_ctr_~rs~5#1.base|) .cse1)) (not (= v_ArrVal_2502 (store (store .cse3 .cse2 (select v_ArrVal_2502 .cse2)) .cse0 (select v_ArrVal_2502 .cse0)))))))) is different from false [2023-12-02 08:26:12,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480675156] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:26:12,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [512439809] [2023-12-02 08:26:12,151 INFO L159 IcfgInterpreter]: Started Sifa with 172 locations of interest [2023-12-02 08:26:12,151 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 08:26:12,154 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 08:26:12,158 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 08:26:12,159 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 08:31:48,079 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 114 for LOIs [2023-12-02 08:31:48,212 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 1944 for LOIs [2023-12-02 08:33:55,720 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 1969 for LOIs [2023-12-02 08:34:13,411 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 82 for LOIs [2023-12-02 08:34:13,428 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 114 for LOIs [2023-12-02 08:34:13,452 INFO L180 IcfgInterpreter]: Interpretation finished