./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/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_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/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_10832cdd-78e9-4022-b8a6-3917a109ba8f/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 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:59:34,714 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:59:34,778 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 16:59:34,782 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:59:34,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:59:34,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:59:34,807 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:59:34,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:59:34,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:59:34,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:59:34,809 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:59:34,810 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:59:34,810 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:59:34,811 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:59:34,811 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:59:34,812 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:59:34,812 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:59:34,813 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:59:34,813 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:59:34,814 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:59:34,814 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:59:34,815 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:59:34,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:59:34,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:59:34,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:59:34,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:59:34,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:59:34,818 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:59:34,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:59:34,819 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:59:34,820 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:59:34,820 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:59:34,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:59:34,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:59:34,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:59:34,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:59:34,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:59:34,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:59:34,824 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:59:34,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:59:34,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:59:34,825 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:59:34,825 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:59:34,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:59:34,826 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_10832cdd-78e9-4022-b8a6-3917a109ba8f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce [2023-12-02 16:59:35,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:59:35,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:59:35,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:59:35,079 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:59:35,079 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:59:35,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2023-12-02 16:59:37,881 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:59:38,342 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:59:38,343 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2023-12-02 16:59:38,379 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/data/ba9d10aa4/f7402b5bb95442868c161ca516520fa7/FLAG2edf2857e [2023-12-02 16:59:38,393 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/data/ba9d10aa4/f7402b5bb95442868c161ca516520fa7 [2023-12-02 16:59:38,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:59:38,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:59:38,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:59:38,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:59:38,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:59:38,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:59:38" (1/1) ... [2023-12-02 16:59:38,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37617c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:38, skipping insertion in model container [2023-12-02 16:59:38,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:59:38" (1/1) ... [2023-12-02 16:59:38,548 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:59:40,145 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_10832cdd-78e9-4022-b8a6-3917a109ba8f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2023-12-02 16:59:40,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:59:40,243 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:59:40,409 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"); [5577] [2023-12-02 16:59:40,411 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)); [5584] [2023-12-02 16:59:40,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [5925-5926] [2023-12-02 16:59:40,426 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [5954-5955] [2023-12-02 16:59:40,534 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7805] [2023-12-02 16:59:40,584 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_10832cdd-78e9-4022-b8a6-3917a109ba8f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2023-12-02 16:59:40,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:59:40,738 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:59:40,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:40 WrapperNode [2023-12-02 16:59:40,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:59:40,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:59:40,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:59:40,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:59:40,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:40" (1/1) ... [2023-12-02 16:59:40,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:40" (1/1) ... [2023-12-02 16:59:40,952 INFO L138 Inliner]: procedures = 262, calls = 1371, calls flagged for inlining = 122, calls inlined = 117, statements flattened = 4065 [2023-12-02 16:59:40,952 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:59:40,953 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:59:40,953 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:59:40,953 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:59:40,963 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:40" (1/1) ... [2023-12-02 16:59:40,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:40" (1/1) ... [2023-12-02 16:59:40,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:40" (1/1) ... [2023-12-02 16:59:40,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:40" (1/1) ... [2023-12-02 16:59:41,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:40" (1/1) ... [2023-12-02 16:59:41,094 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:40" (1/1) ... [2023-12-02 16:59:41,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:40" (1/1) ... [2023-12-02 16:59:41,185 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:40" (1/1) ... [2023-12-02 16:59:41,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:59:41,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:59:41,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:59:41,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:59:41,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:40" (1/1) ... [2023-12-02 16:59:41,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:59:41,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:59:41,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:59:41,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:59:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2023-12-02 16:59:41,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2023-12-02 16:59:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2023-12-02 16:59:41,277 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2023-12-02 16:59:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 16:59:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 16:59:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-12-02 16:59:41,277 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-12-02 16:59:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2023-12-02 16:59:41,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2023-12-02 16:59:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 16:59:41,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 16:59:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 16:59:41,278 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 16:59:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset_after_host_error [2023-12-02 16:59:41,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset_after_host_error [2023-12-02 16:59:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-12-02 16:59:41,279 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-12-02 16:59:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-12-02 16:59:41,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-12-02 16:59:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 16:59:41,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 16:59:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-12-02 16:59:41,279 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-12-02 16:59:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2023-12-02 16:59:41,280 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2023-12-02 16:59:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 16:59:41,280 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 16:59:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 16:59:41,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 16:59:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2023-12-02 16:59:41,280 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2023-12-02 16:59:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-12-02 16:59:41,281 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-12-02 16:59:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2023-12-02 16:59:41,281 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2023-12-02 16:59:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-12-02 16:59:41,281 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-12-02 16:59:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2023-12-02 16:59:41,281 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2023-12-02 16:59:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2023-12-02 16:59:41,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2023-12-02 16:59:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2023-12-02 16:59:41,282 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2023-12-02 16:59:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:59:41,282 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:59:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-12-02 16:59:41,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-12-02 16:59:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 16:59:41,282 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 16:59:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-12-02 16:59:41,283 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-12-02 16:59:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2023-12-02 16:59:41,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2023-12-02 16:59:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2023-12-02 16:59:41,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2023-12-02 16:59:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2023-12-02 16:59:41,283 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2023-12-02 16:59:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:59:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-12-02 16:59:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-12-02 16:59:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2023-12-02 16:59:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2023-12-02 16:59:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2023-12-02 16:59:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2023-12-02 16:59:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 16:59:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2023-12-02 16:59:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2023-12-02 16:59:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-12-02 16:59:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-12-02 16:59:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-12-02 16:59:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-12-02 16:59:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-12-02 16:59:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-12-02 16:59:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2023-12-02 16:59:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2023-12-02 16:59:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-12-02 16:59:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-12-02 16:59:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2023-12-02 16:59:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2023-12-02 16:59:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:59:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 16:59:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 16:59:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 16:59:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2023-12-02 16:59:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2023-12-02 16:59:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 16:59:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 16:59:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 16:59:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 16:59:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 16:59:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 16:59:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-12-02 16:59:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-12-02 16:59:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 16:59:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-12-02 16:59:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-12-02 16:59:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-12-02 16:59:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-12-02 16:59:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2023-12-02 16:59:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2023-12-02 16:59:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2023-12-02 16:59:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2023-12-02 16:59:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2023-12-02 16:59:41,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2023-12-02 16:59:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 16:59:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioctl [2023-12-02 16:59:41,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioctl [2023-12-02 16:59:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2023-12-02 16:59:41,289 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2023-12-02 16:59:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:59:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 16:59:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 16:59:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-12-02 16:59:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-12-02 16:59:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 16:59:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 16:59:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 16:59:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 16:59:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-12-02 16:59:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-12-02 16:59:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2023-12-02 16:59:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2023-12-02 16:59:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-12-02 16:59:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-12-02 16:59:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:59:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-12-02 16:59:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-12-02 16:59:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2023-12-02 16:59:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2023-12-02 16:59:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2023-12-02 16:59:41,292 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2023-12-02 16:59:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 16:59:41,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 16:59:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2023-12-02 16:59:41,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2023-12-02 16:59:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 16:59:41,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 16:59:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2023-12-02 16:59:41,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2023-12-02 16:59:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 16:59:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2023-12-02 16:59:41,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2023-12-02 16:59:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 16:59:41,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 16:59:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2023-12-02 16:59:41,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2023-12-02 16:59:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:59:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 16:59:41,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 16:59:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 16:59:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-12-02 16:59:41,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-12-02 16:59:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2023-12-02 16:59:41,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2023-12-02 16:59:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2023-12-02 16:59:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2023-12-02 16:59:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2023-12-02 16:59:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2023-12-02 16:59:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2023-12-02 16:59:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2023-12-02 16:59:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2023-12-02 16:59:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2023-12-02 16:59:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-12-02 16:59:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-12-02 16:59:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2023-12-02 16:59:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2023-12-02 16:59:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2023-12-02 16:59:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2023-12-02 16:59:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2023-12-02 16:59:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2023-12-02 16:59:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2023-12-02 16:59:41,297 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2023-12-02 16:59:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_change_mtu [2023-12-02 16:59:41,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_change_mtu [2023-12-02 16:59:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 16:59:41,297 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 16:59:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:59:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2023-12-02 16:59:41,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2023-12-02 16:59:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2023-12-02 16:59:41,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2023-12-02 16:59:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2023-12-02 16:59:41,298 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2023-12-02 16:59:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:59:41,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:59:41,876 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:59:41,880 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:59:43,070 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 16:59:46,298 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:59:48,062 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:59:48,062 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 16:59:48,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:59:48 BoogieIcfgContainer [2023-12-02 16:59:48,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:59:48,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:59:48,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:59:48,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:59:48,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:59:38" (1/3) ... [2023-12-02 16:59:48,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ece8ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:59:48, skipping insertion in model container [2023-12-02 16:59:48,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:59:40" (2/3) ... [2023-12-02 16:59:48,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ece8ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:59:48, skipping insertion in model container [2023-12-02 16:59:48,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:59:48" (3/3) ... [2023-12-02 16:59:48,073 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2023-12-02 16:59:48,093 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:59:48,093 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:59:48,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:59:48,176 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;@7e522098, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:59:48,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:59:48,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 1170 states, 707 states have (on average 1.3012729844413014) internal successors, (920), 735 states have internal predecessors, (920), 379 states have call successors, (379), 85 states have call predecessors, (379), 84 states have return successors, (371), 371 states have call predecessors, (371), 371 states have call successors, (371) [2023-12-02 16:59:48,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-02 16:59:48,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:48,212 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 16:59:48,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:59:48,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:48,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2069815476, now seen corresponding path program 1 times [2023-12-02 16:59:48,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:48,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397662555] [2023-12-02 16:59:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 16:59:49,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:49,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397662555] [2023-12-02 16:59:49,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397662555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:49,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:49,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:59:49,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690035953] [2023-12-02 16:59:49,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:49,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:59:49,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:49,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:59:49,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:59:49,076 INFO L87 Difference]: Start difference. First operand has 1170 states, 707 states have (on average 1.3012729844413014) internal successors, (920), 735 states have internal predecessors, (920), 379 states have call successors, (379), 85 states have call predecessors, (379), 84 states have return successors, (371), 371 states have call predecessors, (371), 371 states have call successors, (371) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 16:59:53,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:59:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:55,912 INFO L93 Difference]: Finished difference Result 3423 states and 4949 transitions. [2023-12-02 16:59:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:59:55,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2023-12-02 16:59:55,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:55,950 INFO L225 Difference]: With dead ends: 3423 [2023-12-02 16:59:55,950 INFO L226 Difference]: Without dead ends: 2243 [2023-12-02 16:59:55,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:59:55,970 INFO L413 NwaCegarLoop]: 1470 mSDtfsCounter, 1570 mSDsluCounter, 4375 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 5845 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:55,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 5845 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-02 16:59:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2023-12-02 16:59:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 2229. [2023-12-02 16:59:56,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 1353 states have (on average 1.287509238728751) internal successors, (1742), 1392 states have internal predecessors, (1742), 711 states have call successors, (711), 166 states have call predecessors, (711), 164 states have return successors, (712), 703 states have call predecessors, (712), 710 states have call successors, (712) [2023-12-02 16:59:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 3165 transitions. [2023-12-02 16:59:56,282 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 3165 transitions. Word has length 93 [2023-12-02 16:59:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:56,283 INFO L495 AbstractCegarLoop]: Abstraction has 2229 states and 3165 transitions. [2023-12-02 16:59:56,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 16:59:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 3165 transitions. [2023-12-02 16:59:56,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:59:56,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:56,293 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 16:59:56,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:59:56,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:59:56,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:56,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1299666723, now seen corresponding path program 1 times [2023-12-02 16:59:56,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:56,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959343469] [2023-12-02 16:59:56,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:56,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 16:59:56,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:56,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959343469] [2023-12-02 16:59:56,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959343469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:56,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:56,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:59:56,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114698352] [2023-12-02 16:59:56,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:56,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:59:56,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:56,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:59:56,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:59:56,818 INFO L87 Difference]: Start difference. First operand 2229 states and 3165 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 17:00:00,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:00:02,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:02,904 INFO L93 Difference]: Finished difference Result 5007 states and 7085 transitions. [2023-12-02 17:00:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:00:02,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 94 [2023-12-02 17:00:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:02,932 INFO L225 Difference]: With dead ends: 5007 [2023-12-02 17:00:02,933 INFO L226 Difference]: Without dead ends: 3330 [2023-12-02 17:00:02,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:00:02,943 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 1542 mSDsluCounter, 4637 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 6250 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:02,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 6250 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-02 17:00:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2023-12-02 17:00:03,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3311. [2023-12-02 17:00:03,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3311 states, 2013 states have (on average 1.288127173373075) internal successors, (2593), 2069 states have internal predecessors, (2593), 1052 states have call successors, (1052), 248 states have call predecessors, (1052), 245 states have return successors, (1055), 1042 states have call predecessors, (1055), 1051 states have call successors, (1055) [2023-12-02 17:00:03,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 4700 transitions. [2023-12-02 17:00:03,137 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 4700 transitions. Word has length 94 [2023-12-02 17:00:03,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:03,138 INFO L495 AbstractCegarLoop]: Abstraction has 3311 states and 4700 transitions. [2023-12-02 17:00:03,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 17:00:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 4700 transitions. [2023-12-02 17:00:03,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 17:00:03,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:03,143 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 17:00:03,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:00:03,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:00:03,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:03,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1752075127, now seen corresponding path program 1 times [2023-12-02 17:00:03,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:03,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260054202] [2023-12-02 17:00:03,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:03,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 17:00:03,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:03,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260054202] [2023-12-02 17:00:03,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260054202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:03,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:03,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:00:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751645227] [2023-12-02 17:00:03,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:03,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:00:03,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:03,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:00:03,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:00:03,504 INFO L87 Difference]: Start difference. First operand 3311 states and 4700 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 17:00:07,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:00:10,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:10,071 INFO L93 Difference]: Finished difference Result 6094 states and 8622 transitions. [2023-12-02 17:00:10,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:00:10,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 95 [2023-12-02 17:00:10,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:10,097 INFO L225 Difference]: With dead ends: 6094 [2023-12-02 17:00:10,097 INFO L226 Difference]: Without dead ends: 3334 [2023-12-02 17:00:10,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:00:10,109 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 1540 mSDsluCounter, 4637 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 6250 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:10,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 6250 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 834 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2023-12-02 17:00:10,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2023-12-02 17:00:10,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 3315. [2023-12-02 17:00:10,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 2017 states have (on average 1.287555775904809) internal successors, (2597), 2072 states have internal predecessors, (2597), 1051 states have call successors, (1051), 249 states have call predecessors, (1051), 246 states have return successors, (1054), 1042 states have call predecessors, (1054), 1050 states have call successors, (1054) [2023-12-02 17:00:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 4702 transitions. [2023-12-02 17:00:10,310 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 4702 transitions. Word has length 95 [2023-12-02 17:00:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:10,310 INFO L495 AbstractCegarLoop]: Abstraction has 3315 states and 4702 transitions. [2023-12-02 17:00:10,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 17:00:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 4702 transitions. [2023-12-02 17:00:10,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 17:00:10,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:10,315 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 17:00:10,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:00:10,316 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:00:10,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:10,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1449049734, now seen corresponding path program 1 times [2023-12-02 17:00:10,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:10,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427832265] [2023-12-02 17:00:10,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:10,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 17:00:10,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:10,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427832265] [2023-12-02 17:00:10,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427832265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:10,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:10,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:00:10,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898806528] [2023-12-02 17:00:10,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:10,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:00:10,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:10,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:00:10,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:00:10,663 INFO L87 Difference]: Start difference. First operand 3315 states and 4702 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 17:00:14,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:00:16,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:16,693 INFO L93 Difference]: Finished difference Result 5795 states and 8171 transitions. [2023-12-02 17:00:16,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:00:16,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2023-12-02 17:00:16,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:16,711 INFO L225 Difference]: With dead ends: 5795 [2023-12-02 17:00:16,711 INFO L226 Difference]: Without dead ends: 3030 [2023-12-02 17:00:16,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:00:16,722 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1538 mSDsluCounter, 4663 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 6289 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:16,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 6289 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 837 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2023-12-02 17:00:16,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2023-12-02 17:00:16,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 3014. [2023-12-02 17:00:16,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 1820 states have (on average 1.2813186813186814) internal successors, (2332), 1867 states have internal predecessors, (2332), 958 states have call successors, (958), 238 states have call predecessors, (958), 235 states have return successors, (961), 950 states have call predecessors, (961), 957 states have call successors, (961) [2023-12-02 17:00:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 4251 transitions. [2023-12-02 17:00:16,852 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 4251 transitions. Word has length 96 [2023-12-02 17:00:16,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:16,853 INFO L495 AbstractCegarLoop]: Abstraction has 3014 states and 4251 transitions. [2023-12-02 17:00:16,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 17:00:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 4251 transitions. [2023-12-02 17:00:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-02 17:00:16,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:16,858 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:16,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:00:16,858 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:00:16,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:16,859 INFO L85 PathProgramCache]: Analyzing trace with hash -476030802, now seen corresponding path program 1 times [2023-12-02 17:00:16,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:16,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017244232] [2023-12-02 17:00:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:16,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-02 17:00:17,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:17,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017244232] [2023-12-02 17:00:17,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017244232] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:00:17,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021031673] [2023-12-02 17:00:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:17,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:00:17,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:00:17,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:00:17,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:00:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:18,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 2111 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:00:18,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:00:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 17:00:18,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:00:18,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021031673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:18,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:00:18,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-02 17:00:18,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251004115] [2023-12-02 17:00:18,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:18,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:00:18,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:18,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:00:18,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:00:18,271 INFO L87 Difference]: Start difference. First operand 3014 states and 4251 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:00:20,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:00:23,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:00:24,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:00:27,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:27,421 INFO L93 Difference]: Finished difference Result 7140 states and 10074 transitions. [2023-12-02 17:00:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 17:00:27,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2023-12-02 17:00:27,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:27,458 INFO L225 Difference]: With dead ends: 7140 [2023-12-02 17:00:27,458 INFO L226 Difference]: Without dead ends: 4913 [2023-12-02 17:00:27,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-02 17:00:27,472 INFO L413 NwaCegarLoop]: 2007 mSDtfsCounter, 1572 mSDsluCounter, 9453 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 11460 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:27,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 11460 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-12-02 17:00:27,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4913 states. [2023-12-02 17:00:27,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4913 to 4880. [2023-12-02 17:00:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4880 states, 2945 states have (on average 1.2818336162988115) internal successors, (3775), 3026 states have internal predecessors, (3775), 1547 states have call successors, (1547), 390 states have call predecessors, (1547), 387 states have return successors, (1559), 1530 states have call predecessors, (1559), 1546 states have call successors, (1559) [2023-12-02 17:00:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 6881 transitions. [2023-12-02 17:00:27,837 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 6881 transitions. Word has length 106 [2023-12-02 17:00:27,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:27,837 INFO L495 AbstractCegarLoop]: Abstraction has 4880 states and 6881 transitions. [2023-12-02 17:00:27,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:00:27,838 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 6881 transitions. [2023-12-02 17:00:27,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-02 17:00:27,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:27,846 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-12-02 17:00:27,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:00:28,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:00:28,046 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:00:28,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:28,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1180117928, now seen corresponding path program 1 times [2023-12-02 17:00:28,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:28,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799035444] [2023-12-02 17:00:28,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:28,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 17:00:28,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:28,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799035444] [2023-12-02 17:00:28,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799035444] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:00:28,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281542190] [2023-12-02 17:00:28,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:28,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:00:28,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:00:28,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:00:28,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:00:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:29,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 2113 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:00:29,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:00:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 17:00:29,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:00:29,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281542190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:29,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:00:29,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 17:00:29,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222074456] [2023-12-02 17:00:29,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:29,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:00:29,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:29,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:00:29,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:29,220 INFO L87 Difference]: Start difference. First operand 4880 states and 6881 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:00:35,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:00:37,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:00:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:40,038 INFO L93 Difference]: Finished difference Result 10883 states and 15344 transitions. [2023-12-02 17:00:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 17:00:40,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2023-12-02 17:00:40,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:40,074 INFO L225 Difference]: With dead ends: 10883 [2023-12-02 17:00:40,074 INFO L226 Difference]: Without dead ends: 6790 [2023-12-02 17:00:40,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-02 17:00:40,089 INFO L413 NwaCegarLoop]: 2023 mSDtfsCounter, 1572 mSDsluCounter, 9506 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 11529 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:40,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 11529 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1549 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-12-02 17:00:40,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6790 states. [2023-12-02 17:00:40,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6790 to 6751. [2023-12-02 17:00:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6751 states, 4073 states have (on average 1.2818561257058678) internal successors, (5221), 4191 states have internal predecessors, (5221), 2136 states have call successors, (2136), 542 states have call predecessors, (2136), 541 states have return successors, (2160), 2109 states have call predecessors, (2160), 2135 states have call successors, (2160) [2023-12-02 17:00:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6751 states to 6751 states and 9517 transitions. [2023-12-02 17:00:40,376 INFO L78 Accepts]: Start accepts. Automaton has 6751 states and 9517 transitions. Word has length 107 [2023-12-02 17:00:40,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:40,377 INFO L495 AbstractCegarLoop]: Abstraction has 6751 states and 9517 transitions. [2023-12-02 17:00:40,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:00:40,377 INFO L276 IsEmpty]: Start isEmpty. Operand 6751 states and 9517 transitions. [2023-12-02 17:00:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 17:00:40,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:40,385 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-12-02 17:00:40,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:00:40,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:00:40,586 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:00:40,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:40,587 INFO L85 PathProgramCache]: Analyzing trace with hash 915378631, now seen corresponding path program 1 times [2023-12-02 17:00:40,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:40,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618930347] [2023-12-02 17:00:40,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:40,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 17:00:41,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:41,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618930347] [2023-12-02 17:00:41,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618930347] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:00:41,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678235801] [2023-12-02 17:00:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:41,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:00:41,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:00:41,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:00:41,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:00:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:41,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 2115 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:00:41,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:00:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 17:00:41,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:00:41,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678235801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:41,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:00:41,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 17:00:41,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241254646] [2023-12-02 17:00:41,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:41,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:00:41,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:00:41,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:41,844 INFO L87 Difference]: Start difference. First operand 6751 states and 9517 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:00:46,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:00:47,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:00:49,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:00:51,461 WARN L539 Checker$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 17:00:55,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:55,652 INFO L93 Difference]: Finished difference Result 14623 states and 20612 transitions. [2023-12-02 17:00:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 17:00:55,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-12-02 17:00:55,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:55,694 INFO L225 Difference]: With dead ends: 14623 [2023-12-02 17:00:55,694 INFO L226 Difference]: Without dead ends: 8659 [2023-12-02 17:00:55,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-02 17:00:55,712 INFO L413 NwaCegarLoop]: 2022 mSDtfsCounter, 1572 mSDsluCounter, 9501 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 11523 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:55,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 11523 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1549 Invalid, 2 Unknown, 0 Unchecked, 13.5s Time] [2023-12-02 17:00:55,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8659 states. [2023-12-02 17:00:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8659 to 6752. [2023-12-02 17:00:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6752 states, 4074 states have (on average 1.2817869415807561) internal successors, (5222), 4191 states have internal predecessors, (5222), 2136 states have call successors, (2136), 542 states have call predecessors, (2136), 541 states have return successors, (2160), 2110 states have call predecessors, (2160), 2135 states have call successors, (2160) [2023-12-02 17:00:56,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6752 states to 6752 states and 9518 transitions. [2023-12-02 17:00:56,132 INFO L78 Accepts]: Start accepts. Automaton has 6752 states and 9518 transitions. Word has length 108 [2023-12-02 17:00:56,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:56,133 INFO L495 AbstractCegarLoop]: Abstraction has 6752 states and 9518 transitions. [2023-12-02 17:00:56,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:00:56,134 INFO L276 IsEmpty]: Start isEmpty. Operand 6752 states and 9518 transitions. [2023-12-02 17:00:56,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 17:00:56,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:56,144 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-12-02 17:00:56,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 17:00:56,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:00:56,345 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:00:56,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:56,346 INFO L85 PathProgramCache]: Analyzing trace with hash -396343791, now seen corresponding path program 1 times [2023-12-02 17:00:56,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:56,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240188213] [2023-12-02 17:00:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:56,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 17:00:56,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:56,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240188213] [2023-12-02 17:00:56,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240188213] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:00:56,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390344462] [2023-12-02 17:00:56,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:56,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:00:56,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:00:56,716 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:00:56,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:00:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:57,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 2117 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:00:57,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:00:57,581 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 17:00:57,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:00:57,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390344462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:57,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:00:57,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-02 17:00:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377773449] [2023-12-02 17:00:57,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:57,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:00:57,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:57,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:00:57,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:57,584 INFO L87 Difference]: Start difference. First operand 6752 states and 9518 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:01:01,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:01:02,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:01:03,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:01:05,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:01:07,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:01:09,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:01:11,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:11,688 INFO L93 Difference]: Finished difference Result 14626 states and 20615 transitions. [2023-12-02 17:01:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 17:01:11,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2023-12-02 17:01:11,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:11,714 INFO L225 Difference]: With dead ends: 14626 [2023-12-02 17:01:11,714 INFO L226 Difference]: Without dead ends: 8661 [2023-12-02 17:01:11,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-02 17:01:11,729 INFO L413 NwaCegarLoop]: 2023 mSDtfsCounter, 1572 mSDsluCounter, 9506 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 11529 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:11,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 11529 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1547 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2023-12-02 17:01:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8661 states. [2023-12-02 17:01:11,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8661 to 6753. [2023-12-02 17:01:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6753 states, 4075 states have (on average 1.281717791411043) internal successors, (5223), 4191 states have internal predecessors, (5223), 2136 states have call successors, (2136), 542 states have call predecessors, (2136), 541 states have return successors, (2160), 2111 states have call predecessors, (2160), 2135 states have call successors, (2160) [2023-12-02 17:01:11,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6753 states to 6753 states and 9519 transitions. [2023-12-02 17:01:11,973 INFO L78 Accepts]: Start accepts. Automaton has 6753 states and 9519 transitions. Word has length 109 [2023-12-02 17:01:11,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:11,973 INFO L495 AbstractCegarLoop]: Abstraction has 6753 states and 9519 transitions. [2023-12-02 17:01:11,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:01:11,974 INFO L276 IsEmpty]: Start isEmpty. Operand 6753 states and 9519 transitions. [2023-12-02 17:01:11,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-02 17:01:11,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:11,981 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:11,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 17:01:12,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:01:12,182 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:01:12,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:12,182 INFO L85 PathProgramCache]: Analyzing trace with hash -624582400, now seen corresponding path program 1 times [2023-12-02 17:01:12,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:12,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759272349] [2023-12-02 17:01:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:12,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 17:01:12,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:12,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759272349] [2023-12-02 17:01:12,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759272349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:12,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:12,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:01:12,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748100797] [2023-12-02 17:01:12,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:12,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:01:12,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:12,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:01:12,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:01:12,390 INFO L87 Difference]: Start difference. First operand 6753 states and 9519 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 17:01:15,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:15,445 INFO L93 Difference]: Finished difference Result 18528 states and 26012 transitions. [2023-12-02 17:01:15,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:01:15,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 123 [2023-12-02 17:01:15,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:15,484 INFO L225 Difference]: With dead ends: 18528 [2023-12-02 17:01:15,484 INFO L226 Difference]: Without dead ends: 11791 [2023-12-02 17:01:15,501 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 17:01:15,502 INFO L413 NwaCegarLoop]: 1457 mSDtfsCounter, 1243 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:15,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 2801 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 17:01:15,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11791 states. [2023-12-02 17:01:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11791 to 11774. [2023-12-02 17:01:16,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11774 states, 7108 states have (on average 1.2753235790658413) internal successors, (9065), 7320 states have internal predecessors, (9065), 3695 states have call successors, (3695), 965 states have call predecessors, (3695), 970 states have return successors, (3732), 3650 states have call predecessors, (3732), 3694 states have call successors, (3732) [2023-12-02 17:01:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11774 states to 11774 states and 16492 transitions. [2023-12-02 17:01:16,087 INFO L78 Accepts]: Start accepts. Automaton has 11774 states and 16492 transitions. Word has length 123 [2023-12-02 17:01:16,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:16,087 INFO L495 AbstractCegarLoop]: Abstraction has 11774 states and 16492 transitions. [2023-12-02 17:01:16,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 17:01:16,087 INFO L276 IsEmpty]: Start isEmpty. Operand 11774 states and 16492 transitions. [2023-12-02 17:01:16,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 17:01:16,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:16,092 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:16,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 17:01:16,092 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:01:16,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:16,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1190428056, now seen corresponding path program 1 times [2023-12-02 17:01:16,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:16,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392954046] [2023-12-02 17:01:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:16,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:16,601 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-02 17:01:16,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:16,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392954046] [2023-12-02 17:01:16,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392954046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:16,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:16,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:01:16,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273769665] [2023-12-02 17:01:16,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:16,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:01:16,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:16,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:01:16,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:01:16,603 INFO L87 Difference]: Start difference. First operand 11774 states and 16492 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 17:01:19,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:01:20,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:20,982 INFO L93 Difference]: Finished difference Result 13894 states and 19138 transitions. [2023-12-02 17:01:20,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:01:20,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 125 [2023-12-02 17:01:20,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:21,026 INFO L225 Difference]: With dead ends: 13894 [2023-12-02 17:01:21,027 INFO L226 Difference]: Without dead ends: 13891 [2023-12-02 17:01:21,034 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 17:01:21,034 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 1186 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 3979 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:21,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 3979 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 543 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 17:01:21,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13891 states. [2023-12-02 17:01:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13891 to 13891. [2023-12-02 17:01:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13891 states, 8192 states have (on average 1.2501220703125) internal successors, (10241), 8412 states have internal predecessors, (10241), 4422 states have call successors, (4422), 1271 states have call predecessors, (4422), 1276 states have return successors, (4459), 4377 states have call predecessors, (4459), 4421 states have call successors, (4459) [2023-12-02 17:01:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13891 states to 13891 states and 19122 transitions. [2023-12-02 17:01:21,725 INFO L78 Accepts]: Start accepts. Automaton has 13891 states and 19122 transitions. Word has length 125 [2023-12-02 17:01:21,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:21,725 INFO L495 AbstractCegarLoop]: Abstraction has 13891 states and 19122 transitions. [2023-12-02 17:01:21,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 17:01:21,726 INFO L276 IsEmpty]: Start isEmpty. Operand 13891 states and 19122 transitions. [2023-12-02 17:01:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 17:01:21,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:21,732 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:21,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 17:01:21,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:01:21,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:21,732 INFO L85 PathProgramCache]: Analyzing trace with hash -956071322, now seen corresponding path program 1 times [2023-12-02 17:01:21,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:21,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130610877] [2023-12-02 17:01:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:21,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 17:01:22,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:22,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130610877] [2023-12-02 17:01:22,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130610877] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:01:22,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69946751] [2023-12-02 17:01:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:22,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:01:22,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:01:22,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:01:22,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10832cdd-78e9-4022-b8a6-3917a109ba8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 17:01:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:23,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 17:01:23,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:01:23,247 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-02 17:01:23,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:01:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-02 17:01:23,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69946751] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:01:23,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1456979391] [2023-12-02 17:01:23,593 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2023-12-02 17:01:23,593 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:01:23,596 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:01:23,601 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:01:23,602 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:05:01,558 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 180 for LOIs [2023-12-02 17:05:01,661 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 1512 for LOIs [2023-12-02 17:06:14,634 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 1537 for LOIs [2023-12-02 17:06:24,143 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 148 for LOIs [2023-12-02 17:06:24,190 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:06:51,488 WARN L293 SmtUtils]: Spent 26.38s on a formula simplification. DAG size of input: 1503 DAG size of output: 1499 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:07:48,695 WARN L293 SmtUtils]: Spent 56.51s on a formula simplification. DAG size of input: 1512 DAG size of output: 1509 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:09:47,222 WARN L293 SmtUtils]: Spent 1.96m on a formula simplification. DAG size of input: 1533 DAG size of output: 1530 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:10:51,659 WARN L293 SmtUtils]: Spent 1.06m on a formula simplification. DAG size of input: 1537 DAG size of output: 1534 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:12:52,489 WARN L293 SmtUtils]: Spent 1.99m on a formula simplification. DAG size of input: 1539 DAG size of output: 1536 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:13:47,196 WARN L293 SmtUtils]: Spent 48.58s on a formula simplification. DAG size of input: 1800 DAG size of output: 1796 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)