./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1 --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:24:05,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:24:05,124 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 14:24:05,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:24:05,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:24:05,150 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:24:05,151 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:24:05,151 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:24:05,151 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:24:05,151 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:24:05,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:24:05,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:24:05,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:24:05,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:24:05,152 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:24:05,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:24:05,152 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:24:05,152 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:24:05,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:24:05,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:24:05,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:24:05,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:24:05,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:24:05,153 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:24:05,153 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:24:05,153 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:24:05,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:24:05,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:24:05,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:24:05,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:24:05,153 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:24:05,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:24:05,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:24:05,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:24:05,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:24:05,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:24:05,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:24:05,154 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:24:05,154 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:24:05,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:24:05,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:24:05,154 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:24:05,154 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:24:05,154 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:24:05,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:24:05,154 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1 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 -> Automizer 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 -> 3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b [2024-12-02 14:24:05,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:24:05,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:24:05,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:24:05,396 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:24:05,396 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:24:05,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2024-12-02 14:24:08,050 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/data/2f3b73597/8c6827f4f5994b569737b2d982ec8c61/FLAGf91cc86f4 [2024-12-02 14:24:08,398 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:24:08,399 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2024-12-02 14:24:08,425 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/data/2f3b73597/8c6827f4f5994b569737b2d982ec8c61/FLAGf91cc86f4 [2024-12-02 14:24:08,439 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/data/2f3b73597/8c6827f4f5994b569737b2d982ec8c61 [2024-12-02 14:24:08,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:24:08,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:24:08,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:24:08,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:24:08,449 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:24:08,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:24:08" (1/1) ... [2024-12-02 14:24:08,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728850b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:08, skipping insertion in model container [2024-12-02 14:24:08,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:24:08" (1/1) ... [2024-12-02 14:24:08,515 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:24:09,195 WARN L250 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_05a47d02-6eea-46f7-a752-4f20d789b722/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2024-12-02 14:24:09,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:24:09,385 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:24:09,562 WARN L250 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_05a47d02-6eea-46f7-a752-4f20d789b722/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2024-12-02 14:24:09,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:24:09,628 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:24:09,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09 WrapperNode [2024-12-02 14:24:09,629 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:24:09,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:24:09,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:24:09,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:24:09,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (1/1) ... [2024-12-02 14:24:09,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (1/1) ... [2024-12-02 14:24:09,723 INFO L138 Inliner]: procedures = 118, calls = 555, calls flagged for inlining = 30, calls inlined = 25, statements flattened = 1113 [2024-12-02 14:24:09,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:24:09,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:24:09,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:24:09,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:24:09,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (1/1) ... [2024-12-02 14:24:09,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (1/1) ... [2024-12-02 14:24:09,744 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (1/1) ... [2024-12-02 14:24:09,779 INFO L175 MemorySlicer]: Split 409 memory accesses to 13 slices as follows [2, 21, 21, 21, 21, 21, 3, 21, 21, 21, 45, 3, 188]. 46 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5]. The 399 writes are split as follows [0, 21, 21, 21, 21, 21, 1, 21, 21, 21, 45, 2, 183]. [2024-12-02 14:24:09,780 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (1/1) ... [2024-12-02 14:24:09,780 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (1/1) ... [2024-12-02 14:24:09,814 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (1/1) ... [2024-12-02 14:24:09,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (1/1) ... [2024-12-02 14:24:09,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (1/1) ... [2024-12-02 14:24:09,830 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (1/1) ... [2024-12-02 14:24:09,834 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (1/1) ... [2024-12-02 14:24:09,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:24:09,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:24:09,847 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:24:09,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:24:09,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (1/1) ... [2024-12-02 14:24:09,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:24:09,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:24:09,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:24:09,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2024-12-02 14:24:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#12 [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-12-02 14:24:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-12-02 14:24:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-12-02 14:24:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2024-12-02 14:24:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2024-12-02 14:24:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2024-12-02 14:24:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2024-12-02 14:24:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-12-02 14:24:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-12-02 14:24:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-12-02 14:24:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-12-02 14:24:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 14:24:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 14:24:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 14:24:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:24:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2024-12-02 14:24:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2024-12-02 14:24:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-12-02 14:24:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-12-02 14:24:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 14:24:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 14:24:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 14:24:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 14:24:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 14:24:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2024-12-02 14:24:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 14:24:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 14:24:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 14:24:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 14:24:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 14:24:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 14:24:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 14:24:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 14:24:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:24:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:24:10,162 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:24:10,163 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:24:10,195 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-12-02 14:24:17,474 INFO L? ?]: Removed 196 outVars from TransFormulas that were not future-live. [2024-12-02 14:24:17,474 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:24:17,486 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:24:17,487 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 14:24:17,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:24:17 BoogieIcfgContainer [2024-12-02 14:24:17,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:24:17,489 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:24:17,489 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:24:17,492 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:24:17,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:24:08" (1/3) ... [2024-12-02 14:24:17,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34401b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:24:17, skipping insertion in model container [2024-12-02 14:24:17,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:09" (2/3) ... [2024-12-02 14:24:17,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34401b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:24:17, skipping insertion in model container [2024-12-02 14:24:17,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:24:17" (3/3) ... [2024-12-02 14:24:17,494 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2024-12-02 14:24:17,505 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:24:17,507 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i that has 11 procedures, 187 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:24:17,551 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:24:17,561 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, 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;@48713ee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:24:17,561 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:24:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 141 states have (on average 1.4539007092198581) internal successors, (205), 157 states have internal predecessors, (205), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-12-02 14:24:17,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 14:24:17,574 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:17,575 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:17,575 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:17,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:17,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1777250594, now seen corresponding path program 1 times [2024-12-02 14:24:17,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:17,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898119657] [2024-12-02 14:24:17,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:17,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:45,176 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-12-02 14:24:45,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:45,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898119657] [2024-12-02 14:24:45,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898119657] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:24:45,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391847845] [2024-12-02 14:24:45,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:45,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:24:45,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:24:45,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:24:45,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:25:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:25:12,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 4654 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:25:12,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:25:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-12-02 14:25:12,551 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:25:12,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391847845] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:25:12,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:25:12,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 14:25:12,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099394697] [2024-12-02 14:25:12,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:25:12,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:25:12,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:25:12,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:25:12,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:25:12,575 INFO L87 Difference]: Start difference. First operand has 186 states, 141 states have (on average 1.4539007092198581) internal successors, (205), 157 states have internal predecessors, (205), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 14:25:12,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:25:12,607 INFO L93 Difference]: Finished difference Result 367 states and 532 transitions. [2024-12-02 14:25:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:25:12,609 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2024-12-02 14:25:12,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:25:12,616 INFO L225 Difference]: With dead ends: 367 [2024-12-02 14:25:12,617 INFO L226 Difference]: Without dead ends: 170 [2024-12-02 14:25:12,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:25:12,623 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:25:12,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:25:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-12-02 14:25:12,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-12-02 14:25:12,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 136 states have (on average 1.3823529411764706) internal successors, (188), 141 states have internal predecessors, (188), 25 states have call successors, (25), 9 states have call predecessors, (25), 8 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-12-02 14:25:12,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 232 transitions. [2024-12-02 14:25:12,664 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 232 transitions. Word has length 118 [2024-12-02 14:25:12,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:25:12,665 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 232 transitions. [2024-12-02 14:25:12,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 14:25:12,665 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 232 transitions. [2024-12-02 14:25:12,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 14:25:12,668 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:25:12,668 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:25:12,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-12-02 14:25:12,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 14:25:12,869 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:25:12,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:25:12,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1015447086, now seen corresponding path program 1 times [2024-12-02 14:25:12,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:25:12,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270225741] [2024-12-02 14:25:12,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:25:12,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:25:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:25:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 14:25:39,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:25:39,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270225741] [2024-12-02 14:25:39,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270225741] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:25:39,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:25:39,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:25:39,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894873548] [2024-12-02 14:25:39,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:25:39,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:25:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:25:39,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:25:39,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:25:39,482 INFO L87 Difference]: Start difference. First operand 170 states and 232 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:25:39,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:25:39,646 INFO L93 Difference]: Finished difference Result 435 states and 600 transitions. [2024-12-02 14:25:39,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:25:39,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 118 [2024-12-02 14:25:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:25:39,649 INFO L225 Difference]: With dead ends: 435 [2024-12-02 14:25:39,649 INFO L226 Difference]: Without dead ends: 283 [2024-12-02 14:25:39,650 INFO L434 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 [2024-12-02 14:25:39,650 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 180 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:25:39,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 432 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:25:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-12-02 14:25:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 269. [2024-12-02 14:25:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 221 states have (on average 1.420814479638009) internal successors, (314), 226 states have internal predecessors, (314), 34 states have call successors, (34), 14 states have call predecessors, (34), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-12-02 14:25:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 376 transitions. [2024-12-02 14:25:39,666 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 376 transitions. Word has length 118 [2024-12-02 14:25:39,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:25:39,666 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 376 transitions. [2024-12-02 14:25:39,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:25:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 376 transitions. [2024-12-02 14:25:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 14:25:39,668 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:25:39,669 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:25:39,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:25:39,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:25:39,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:25:39,669 INFO L85 PathProgramCache]: Analyzing trace with hash 358712219, now seen corresponding path program 1 times [2024-12-02 14:25:39,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:25:39,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027064768] [2024-12-02 14:25:39,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:25:39,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:26:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:26:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 14:26:06,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:26:06,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027064768] [2024-12-02 14:26:06,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027064768] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:26:06,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:26:06,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:26:06,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238992367] [2024-12-02 14:26:06,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:26:06,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:26:06,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:26:06,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:26:06,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:26:06,276 INFO L87 Difference]: Start difference. First operand 269 states and 376 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 14:26:10,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:26:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:26:10,842 INFO L93 Difference]: Finished difference Result 730 states and 1030 transitions. [2024-12-02 14:26:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:26:10,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 117 [2024-12-02 14:26:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:26:10,845 INFO L225 Difference]: With dead ends: 730 [2024-12-02 14:26:10,845 INFO L226 Difference]: Without dead ends: 479 [2024-12-02 14:26:10,846 INFO L434 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 [2024-12-02 14:26:10,846 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 180 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:26:10,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 503 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 14:26:10,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-12-02 14:26:10,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 475. [2024-12-02 14:26:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 399 states have (on average 1.4335839598997493) internal successors, (572), 404 states have internal predecessors, (572), 52 states have call successors, (52), 24 states have call predecessors, (52), 23 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-12-02 14:26:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 670 transitions. [2024-12-02 14:26:10,865 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 670 transitions. Word has length 117 [2024-12-02 14:26:10,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:26:10,865 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 670 transitions. [2024-12-02 14:26:10,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 14:26:10,865 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 670 transitions. [2024-12-02 14:26:10,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 14:26:10,866 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:26:10,866 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:26:10,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:26:10,867 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:26:10,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:26:10,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1337425411, now seen corresponding path program 1 times [2024-12-02 14:26:10,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:26:10,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186824858] [2024-12-02 14:26:10,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:26:10,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:26:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:26:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2024-12-02 14:26:36,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:26:36,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186824858] [2024-12-02 14:26:36,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186824858] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:26:36,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:26:36,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:26:36,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752454727] [2024-12-02 14:26:36,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:26:36,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:26:36,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:26:36,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:26:36,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:26:36,818 INFO L87 Difference]: Start difference. First operand 475 states and 670 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:26:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:26:36,838 INFO L93 Difference]: Finished difference Result 477 states and 671 transitions. [2024-12-02 14:26:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:26:36,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 137 [2024-12-02 14:26:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:26:36,842 INFO L225 Difference]: With dead ends: 477 [2024-12-02 14:26:36,842 INFO L226 Difference]: Without dead ends: 474 [2024-12-02 14:26:36,843 INFO L434 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 [2024-12-02 14:26:36,844 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 194 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:26:36,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 229 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:26:36,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-12-02 14:26:36,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2024-12-02 14:26:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 399 states have (on average 1.431077694235589) internal successors, (571), 403 states have internal predecessors, (571), 51 states have call successors, (51), 24 states have call predecessors, (51), 23 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-12-02 14:26:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 668 transitions. [2024-12-02 14:26:36,867 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 668 transitions. Word has length 137 [2024-12-02 14:26:36,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:26:36,867 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 668 transitions. [2024-12-02 14:26:36,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:26:36,867 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 668 transitions. [2024-12-02 14:26:36,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 14:26:36,869 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:26:36,869 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:26:36,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:26:36,870 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:26:36,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:26:36,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1489510515, now seen corresponding path program 1 times [2024-12-02 14:26:36,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:26:36,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527616567] [2024-12-02 14:26:36,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:26:36,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:27:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:27:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2024-12-02 14:27:03,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:27:03,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527616567] [2024-12-02 14:27:03,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527616567] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:27:03,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:27:03,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:27:03,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599297956] [2024-12-02 14:27:03,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:27:03,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:27:03,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:27:03,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:27:03,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:27:03,056 INFO L87 Difference]: Start difference. First operand 474 states and 668 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:27:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:27:03,077 INFO L93 Difference]: Finished difference Result 476 states and 669 transitions. [2024-12-02 14:27:03,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:27:03,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 138 [2024-12-02 14:27:03,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:27:03,081 INFO L225 Difference]: With dead ends: 476 [2024-12-02 14:27:03,081 INFO L226 Difference]: Without dead ends: 473 [2024-12-02 14:27:03,081 INFO L434 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 [2024-12-02 14:27:03,082 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 191 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:27:03,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 227 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:27:03,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-12-02 14:27:03,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2024-12-02 14:27:03,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 399 states have (on average 1.4285714285714286) internal successors, (570), 402 states have internal predecessors, (570), 50 states have call successors, (50), 24 states have call predecessors, (50), 23 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-12-02 14:27:03,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 666 transitions. [2024-12-02 14:27:03,101 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 666 transitions. Word has length 138 [2024-12-02 14:27:03,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:27:03,101 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 666 transitions. [2024-12-02 14:27:03,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:27:03,102 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 666 transitions. [2024-12-02 14:27:03,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 14:27:03,103 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:27:03,104 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:27:03,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:27:03,104 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:27:03,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:27:03,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1069784128, now seen corresponding path program 1 times [2024-12-02 14:27:03,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:27:03,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222620102] [2024-12-02 14:27:03,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:27:03,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:27:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:27:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2024-12-02 14:27:29,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:27:29,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222620102] [2024-12-02 14:27:29,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222620102] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:27:29,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:27:29,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:27:29,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545795285] [2024-12-02 14:27:29,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:27:29,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:27:29,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:27:29,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:27:29,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:27:29,700 INFO L87 Difference]: Start difference. First operand 473 states and 666 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:27:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:27:29,722 INFO L93 Difference]: Finished difference Result 475 states and 667 transitions. [2024-12-02 14:27:29,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:27:29,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 139 [2024-12-02 14:27:29,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:27:29,726 INFO L225 Difference]: With dead ends: 475 [2024-12-02 14:27:29,726 INFO L226 Difference]: Without dead ends: 472 [2024-12-02 14:27:29,727 INFO L434 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 [2024-12-02 14:27:29,727 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 188 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:27:29,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 225 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:27:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-12-02 14:27:29,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2024-12-02 14:27:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 399 states have (on average 1.4260651629072683) internal successors, (569), 401 states have internal predecessors, (569), 49 states have call successors, (49), 24 states have call predecessors, (49), 23 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-12-02 14:27:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 664 transitions. [2024-12-02 14:27:29,749 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 664 transitions. Word has length 139 [2024-12-02 14:27:29,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:27:29,749 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 664 transitions. [2024-12-02 14:27:29,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:27:29,749 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 664 transitions. [2024-12-02 14:27:29,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 14:27:29,751 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:27:29,751 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:27:29,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:27:29,752 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:27:29,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:27:29,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1196465430, now seen corresponding path program 1 times [2024-12-02 14:27:29,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:27:29,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075947408] [2024-12-02 14:27:29,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:27:29,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:27:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:27:56,394 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2024-12-02 14:27:56,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:27:56,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075947408] [2024-12-02 14:27:56,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075947408] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:27:56,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:27:56,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:27:56,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553713368] [2024-12-02 14:27:56,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:27:56,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:27:56,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:27:56,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:27:56,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:27:56,396 INFO L87 Difference]: Start difference. First operand 472 states and 664 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:27:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:27:56,503 INFO L93 Difference]: Finished difference Result 1334 states and 1900 transitions. [2024-12-02 14:27:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:27:56,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 140 [2024-12-02 14:27:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:27:56,509 INFO L225 Difference]: With dead ends: 1334 [2024-12-02 14:27:56,509 INFO L226 Difference]: Without dead ends: 886 [2024-12-02 14:27:56,511 INFO L434 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 [2024-12-02 14:27:56,511 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 177 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:27:56,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 425 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:27:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-12-02 14:27:56,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 880. [2024-12-02 14:27:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 751 states have (on average 1.4394141145139814) internal successors, (1081), 753 states have internal predecessors, (1081), 87 states have call successors, (87), 44 states have call predecessors, (87), 41 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:27:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1252 transitions. [2024-12-02 14:27:56,556 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1252 transitions. Word has length 140 [2024-12-02 14:27:56,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:27:56,557 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 1252 transitions. [2024-12-02 14:27:56,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:27:56,557 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1252 transitions. [2024-12-02 14:27:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 14:27:56,559 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:27:56,559 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2024-12-02 14:27:56,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:27:56,560 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:27:56,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:27:56,560 INFO L85 PathProgramCache]: Analyzing trace with hash -865366635, now seen corresponding path program 1 times [2024-12-02 14:27:56,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:27:56,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589762220] [2024-12-02 14:27:56,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:27:56,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:28:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:28:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-12-02 14:28:23,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:28:23,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589762220] [2024-12-02 14:28:23,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589762220] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:28:23,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:28:23,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:28:23,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043367935] [2024-12-02 14:28:23,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:28:23,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:28:23,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:28:23,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:28:23,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:28:23,586 INFO L87 Difference]: Start difference. First operand 880 states and 1252 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 14:28:27,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:28:28,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:28:28,169 INFO L93 Difference]: Finished difference Result 1730 states and 2467 transitions. [2024-12-02 14:28:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:28:28,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 159 [2024-12-02 14:28:28,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:28:28,173 INFO L225 Difference]: With dead ends: 1730 [2024-12-02 14:28:28,173 INFO L226 Difference]: Without dead ends: 882 [2024-12-02 14:28:28,175 INFO L434 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 [2024-12-02 14:28:28,175 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 185 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:28:28,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 595 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 14:28:28,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2024-12-02 14:28:28,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 877. [2024-12-02 14:28:28,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 749 states have (on average 1.4352469959946594) internal successors, (1075), 751 states have internal predecessors, (1075), 86 states have call successors, (86), 43 states have call predecessors, (86), 41 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-12-02 14:28:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1243 transitions. [2024-12-02 14:28:28,218 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1243 transitions. Word has length 159 [2024-12-02 14:28:28,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:28:28,218 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 1243 transitions. [2024-12-02 14:28:28,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 14:28:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1243 transitions. [2024-12-02 14:28:28,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 14:28:28,221 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:28:28,221 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2024-12-02 14:28:28,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:28:28,221 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:28:28,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:28:28,221 INFO L85 PathProgramCache]: Analyzing trace with hash 120639758, now seen corresponding path program 1 times [2024-12-02 14:28:28,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:28:28,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130812979] [2024-12-02 14:28:28,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:28:28,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:28:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:28:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-12-02 14:28:57,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:28:57,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130812979] [2024-12-02 14:28:57,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130812979] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:28:57,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:28:57,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:28:57,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198806964] [2024-12-02 14:28:57,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:28:57,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:28:57,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:28:57,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:28:57,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:28:57,384 INFO L87 Difference]: Start difference. First operand 877 states and 1243 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 14:28:57,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:28:57,909 INFO L93 Difference]: Finished difference Result 1724 states and 2452 transitions. [2024-12-02 14:28:57,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:28:57,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 164 [2024-12-02 14:28:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:28:57,913 INFO L225 Difference]: With dead ends: 1724 [2024-12-02 14:28:57,913 INFO L226 Difference]: Without dead ends: 879 [2024-12-02 14:28:57,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:28:57,915 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 0 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:28:57,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1536 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:28:57,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2024-12-02 14:28:57,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 879. [2024-12-02 14:28:57,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 752 states have (on average 1.4308510638297873) internal successors, (1076), 753 states have internal predecessors, (1076), 85 states have call successors, (85), 43 states have call predecessors, (85), 41 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-12-02 14:28:57,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1243 transitions. [2024-12-02 14:28:57,961 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1243 transitions. Word has length 164 [2024-12-02 14:28:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:28:57,962 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1243 transitions. [2024-12-02 14:28:57,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 14:28:57,962 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1243 transitions. [2024-12-02 14:28:57,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 14:28:57,965 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:28:57,965 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:28:57,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:28:57,965 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:28:57,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:28:57,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1917958431, now seen corresponding path program 1 times [2024-12-02 14:28:57,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:28:57,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345512486] [2024-12-02 14:28:57,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:28:57,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:29:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:29:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-12-02 14:29:25,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:29:25,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345512486] [2024-12-02 14:29:25,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345512486] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:29:25,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:29:25,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:29:25,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082897626] [2024-12-02 14:29:25,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:29:25,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:29:25,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:29:25,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:29:25,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:29:25,825 INFO L87 Difference]: Start difference. First operand 879 states and 1243 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:29:26,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:29:26,013 INFO L93 Difference]: Finished difference Result 879 states and 1243 transitions. [2024-12-02 14:29:26,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:29:26,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 171 [2024-12-02 14:29:26,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:29:26,015 INFO L225 Difference]: With dead ends: 879 [2024-12-02 14:29:26,015 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 14:29:26,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:29:26,016 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 0 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:29:26,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 821 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:29:26,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 14:29:26,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 14:29:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:29:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 14:29:26,018 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 171 [2024-12-02 14:29:26,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:29:26,018 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 14:29:26,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:29:26,018 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 14:29:26,018 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 14:29:26,021 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 14:29:26,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:29:26,024 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:29:26,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-02 14:29:42,878 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 14:29:42,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:29:42 BoogieIcfgContainer [2024-12-02 14:29:42,892 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 14:29:42,892 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 14:29:42,893 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 14:29:42,893 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 14:29:42,894 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:24:17" (3/4) ... [2024-12-02 14:29:42,897 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 14:29:42,902 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure usbnet_disconnect [2024-12-02 14:29:42,902 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_error [2024-12-02 14:29:42,902 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_mutex_lock_udev [2024-12-02 14:29:42,902 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_stop [2024-12-02 14:29:42,903 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_init_zalloc [2024-12-02 14:29:42,903 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-12-02 14:29:42,903 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_undef_int [2024-12-02 14:29:42,903 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.meminit [2024-12-02 14:29:42,903 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure always_connected [2024-12-02 14:29:42,903 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_undef_int_negative [2024-12-02 14:29:42,916 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 52 nodes and edges [2024-12-02 14:29:42,918 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-12-02 14:29:42,919 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-12-02 14:29:42,920 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-12-02 14:29:42,922 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 14:29:43,141 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 14:29:43,141 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 14:29:43,141 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 14:29:43,142 INFO L158 Benchmark]: Toolchain (without parser) took 334699.58ms. Allocated memory was 142.6MB in the beginning and 1.0GB in the end (delta: 864.0MB). Free memory was 107.9MB in the beginning and 617.1MB in the end (delta: -509.1MB). Peak memory consumption was 350.5MB. Max. memory is 16.1GB. [2024-12-02 14:29:43,143 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 142.6MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 14:29:43,143 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1184.99ms. Allocated memory is still 142.6MB. Free memory was 107.9MB in the beginning and 59.1MB in the end (delta: 48.8MB). Peak memory consumption was 74.2MB. Max. memory is 16.1GB. [2024-12-02 14:29:43,143 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.24ms. Allocated memory is still 142.6MB. Free memory was 59.1MB in the beginning and 99.8MB in the end (delta: -40.7MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2024-12-02 14:29:43,143 INFO L158 Benchmark]: Boogie Preprocessor took 121.47ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 86.8MB in the end (delta: 13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 14:29:43,144 INFO L158 Benchmark]: RCFGBuilder took 7640.87ms. Allocated memory was 142.6MB in the beginning and 302.0MB in the end (delta: 159.4MB). Free memory was 86.8MB in the beginning and 136.7MB in the end (delta: -49.9MB). Peak memory consumption was 168.0MB. Max. memory is 16.1GB. [2024-12-02 14:29:43,144 INFO L158 Benchmark]: TraceAbstraction took 325402.98ms. Allocated memory was 302.0MB in the beginning and 1.0GB in the end (delta: 704.6MB). Free memory was 136.7MB in the beginning and 646.2MB in the end (delta: -509.5MB). Peak memory consumption was 803.1MB. Max. memory is 16.1GB. [2024-12-02 14:29:43,144 INFO L158 Benchmark]: Witness Printer took 249.04ms. Allocated memory is still 1.0GB. Free memory was 646.2MB in the beginning and 617.1MB in the end (delta: 29.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 14:29:43,146 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 142.6MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1184.99ms. Allocated memory is still 142.6MB. Free memory was 107.9MB in the beginning and 59.1MB in the end (delta: 48.8MB). Peak memory consumption was 74.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.24ms. Allocated memory is still 142.6MB. Free memory was 59.1MB in the beginning and 99.8MB in the end (delta: -40.7MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 121.47ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 86.8MB in the end (delta: 13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 7640.87ms. Allocated memory was 142.6MB in the beginning and 302.0MB in the end (delta: 159.4MB). Free memory was 86.8MB in the beginning and 136.7MB in the end (delta: -49.9MB). Peak memory consumption was 168.0MB. Max. memory is 16.1GB. * TraceAbstraction took 325402.98ms. Allocated memory was 302.0MB in the beginning and 1.0GB in the end (delta: 704.6MB). Free memory was 136.7MB in the beginning and 646.2MB in the end (delta: -509.5MB). Peak memory consumption was 803.1MB. Max. memory is 16.1GB. * Witness Printer took 249.04ms. Allocated memory is still 1.0GB. Free memory was 646.2MB in the beginning and 617.1MB in the end (delta: 29.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6333]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 187 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 308.5s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 1295 SdHoareTripleChecker+Valid, 10.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1295 mSDsluCounter, 5248 SdHoareTripleChecker+Invalid, 9.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2737 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 2511 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=880occurred in iteration=7, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 29 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 1519 NumberOfCodeBlocks, 1519 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1508 ConstructedInterpolants, 0 QuantifiedInterpolants, 1882 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4654 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 2898/2923 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 14:29:43,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a47d02-6eea-46f7-a752-4f20d789b722/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE