./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 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/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', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '64bit', '--witnessprinter.graph.data.programhash', '3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/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 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --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-?-4f9af40 [2024-11-07 13:25:39,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 13:25:40,030 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-07 13:25:40,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 13:25:40,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 13:25:40,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 13:25:40,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 13:25:40,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 13:25:40,065 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 13:25:40,066 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 13:25:40,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 13:25:40,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 13:25:40,066 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 13:25:40,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 13:25:40,066 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 13:25:40,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 13:25:40,067 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 13:25:40,067 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 13:25:40,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 13:25:40,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 13:25:40,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 13:25:40,067 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 13:25:40,067 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 13:25:40,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 13:25:40,067 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 13:25:40,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 13:25:40,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 13:25:40,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 13:25:40,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 13:25:40,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 13:25:40,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 13:25:40,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 13:25:40,068 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 13:25:40,068 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 13:25:40,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 13:25:40,068 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 13:25:40,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 13:25:40,068 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 13:25:40,068 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 13:25:40,068 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux 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 [2024-11-07 13:25:40,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 13:25:40,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 13:25:40,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 13:25:40,370 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 13:25:40,370 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 13:25:40,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2024-11-07 13:25:41,663 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 13:25:42,187 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 13:25:42,187 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2024-11-07 13:25:42,225 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/73f28affa/b6b74ceb4b894e46854d300141569d78/FLAG33774bb28 [2024-11-07 13:25:42,241 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/73f28affa/b6b74ceb4b894e46854d300141569d78 [2024-11-07 13:25:42,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 13:25:42,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 13:25:42,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 13:25:42,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 13:25:42,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 13:25:42,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:42" (1/1) ... [2024-11-07 13:25:42,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b06118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:42, skipping insertion in model container [2024-11-07 13:25:42,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:42" (1/1) ... [2024-11-07 13:25:42,330 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 13:25:42,956 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/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] [2024-11-07 13:25:43,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 13:25:43,104 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 13:25:43,303 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/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] [2024-11-07 13:25:43,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 13:25:43,380 INFO L204 MainTranslator]: Completed translation [2024-11-07 13:25:43,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43 WrapperNode [2024-11-07 13:25:43,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 13:25:43,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 13:25:43,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 13:25:43,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 13:25:43,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43" (1/1) ... [2024-11-07 13:25:43,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43" (1/1) ... [2024-11-07 13:25:43,470 INFO L138 Inliner]: procedures = 118, calls = 555, calls flagged for inlining = 30, calls inlined = 25, statements flattened = 1115 [2024-11-07 13:25:43,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 13:25:43,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 13:25:43,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 13:25:43,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 13:25:43,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43" (1/1) ... [2024-11-07 13:25:43,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43" (1/1) ... [2024-11-07 13:25:43,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43" (1/1) ... [2024-11-07 13:25:43,531 INFO L175 MemorySlicer]: Split 409 memory accesses to 13 slices as follows [2, 3, 21, 21, 21, 21, 21, 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, 2, 21, 21, 21, 21, 21, 21, 21, 21, 45, 1, 183]. [2024-11-07 13:25:43,531 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43" (1/1) ... [2024-11-07 13:25:43,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43" (1/1) ... [2024-11-07 13:25:43,588 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43" (1/1) ... [2024-11-07 13:25:43,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43" (1/1) ... [2024-11-07 13:25:43,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43" (1/1) ... [2024-11-07 13:25:43,611 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43" (1/1) ... [2024-11-07 13:25:43,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 13:25:43,630 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 13:25:43,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 13:25:43,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 13:25:43,631 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43" (1/1) ... [2024-11-07 13:25:43,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 13:25:43,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 13:25:43,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 13:25:43,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 13:25:43,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-07 13:25:43,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-07 13:25:43,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-07 13:25:43,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-07 13:25:43,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-07 13:25:43,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-07 13:25:43,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-07 13:25:43,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-07 13:25:43,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-07 13:25:43,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-07 13:25:43,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-11-07 13:25:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2024-11-07 13:25:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2024-11-07 13:25:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-07 13:25:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-07 13:25:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-07 13:25:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-07 13:25:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-07 13:25:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-07 13:25:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-07 13:25:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-07 13:25:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-07 13:25:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-07 13:25:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-11-07 13:25:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2024-11-07 13:25:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#12 [2024-11-07 13:25:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-07 13:25:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-07 13:25:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 13:25:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 13:25:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 13:25:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 13:25:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-07 13:25:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-07 13:25:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-07 13:25:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-07 13:25:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-07 13:25:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-07 13:25:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-07 13:25:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-07 13:25:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-07 13:25:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-07 13:25:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-07 13:25:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2024-11-07 13:25:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2024-11-07 13:25:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2024-11-07 13:25:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2024-11-07 13:25:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-07 13:25:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-07 13:25:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-07 13:25:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-07 13:25:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-07 13:25:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-07 13:25:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 13:25:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 13:25:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2024-11-07 13:25:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2024-11-07 13:25:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-11-07 13:25:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-11-07 13:25:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 13:25:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2024-11-07 13:25:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-07 13:25:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-07 13:25:43,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-07 13:25:43,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-07 13:25:43,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 13:25:43,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 13:25:44,022 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 13:25:44,024 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 13:25:44,099 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-07 13:25:52,284 INFO L? ?]: Removed 198 outVars from TransFormulas that were not future-live. [2024-11-07 13:25:52,285 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 13:25:52,303 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 13:25:52,306 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-07 13:25:52,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:52 BoogieIcfgContainer [2024-11-07 13:25:52,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 13:25:52,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 13:25:52,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 13:25:52,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 13:25:52,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:25:42" (1/3) ... [2024-11-07 13:25:52,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2764567b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:52, skipping insertion in model container [2024-11-07 13:25:52,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43" (2/3) ... [2024-11-07 13:25:52,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2764567b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:52, skipping insertion in model container [2024-11-07 13:25:52,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:52" (3/3) ... [2024-11-07 13:25:52,318 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2024-11-07 13:25:52,331 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 13:25:52,332 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 13:25:52,386 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 13:25:52,396 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;@776a38d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 13:25:52,396 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 13:25:52,403 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) [2024-11-07 13:25:52,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-07 13:25:52,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:25:52,416 INFO L215 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] [2024-11-07 13:25:52,416 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:25:52,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:25:52,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1777250594, now seen corresponding path program 1 times [2024-11-07 13:25:52,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:25:52,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663334872] [2024-11-07 13:25:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:25:52,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:26:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:15,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:26:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:15,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:26:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:15,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:26:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:15,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:26:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:26:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:26:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-07 13:26:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:26:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:26:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-07 13:26:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:26:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:26:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 13:26:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:26:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:26:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 13:26:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:26:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:26:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-07 13:26:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-07 13:26:16,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:26:16,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663334872] [2024-11-07 13:26:16,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663334872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:26:16,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 13:26:16,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 13:26:16,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128143685] [2024-11-07 13:26:16,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:26:16,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 13:26:16,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:26:16,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 13:26:16,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 13:26:16,280 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 4 states, 4 states have (on average 8.25) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-07 13:26:16,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:26:16,909 INFO L93 Difference]: Finished difference Result 367 states and 532 transitions. [2024-11-07 13:26:16,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 13:26:16,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 118 [2024-11-07 13:26:16,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:26:16,919 INFO L225 Difference]: With dead ends: 367 [2024-11-07 13:26:16,920 INFO L226 Difference]: Without dead ends: 170 [2024-11-07 13:26:16,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 13:26:16,928 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 48 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-07 13:26:16,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 412 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-07 13:26:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-07 13:26:16,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-07 13:26:16,974 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) [2024-11-07 13:26:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 232 transitions. [2024-11-07 13:26:16,981 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 232 transitions. Word has length 118 [2024-11-07 13:26:16,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:26:16,981 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 232 transitions. [2024-11-07 13:26:16,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-07 13:26:16,982 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 232 transitions. [2024-11-07 13:26:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-07 13:26:16,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:26:16,986 INFO L215 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] [2024-11-07 13:26:16,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 13:26:16,987 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:26:16,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:26:16,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1015447086, now seen corresponding path program 1 times [2024-11-07 13:26:16,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:26:16,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044686807] [2024-11-07 13:26:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:26:16,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:26:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:26:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:26:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:26:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:26:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:26:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:26:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-07 13:26:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:26:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:26:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-07 13:26:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:26:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:26:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 13:26:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:26:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:26:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 13:26:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:26:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:26:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-07 13:26:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:26:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-07 13:26:40,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:26:40,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044686807] [2024-11-07 13:26:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044686807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:26:40,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 13:26:40,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 13:26:40,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154697165] [2024-11-07 13:26:40,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:26:40,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 13:26:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:26:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 13:26:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 13:26:40,846 INFO L87 Difference]: Start difference. First operand 170 states and 232 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-07 13:26:44,934 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 [] [2024-11-07 13:26:46,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:26:46,709 INFO L93 Difference]: Finished difference Result 435 states and 600 transitions. [2024-11-07 13:26:46,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 13:26:46,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 4 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 [2024-11-07 13:26:46,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:26:46,712 INFO L225 Difference]: With dead ends: 435 [2024-11-07 13:26:46,713 INFO L226 Difference]: Without dead ends: 283 [2024-11-07 13:26:46,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 13:26:46,714 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 204 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-07 13:26:46,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 712 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 96 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2024-11-07 13:26:46,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-07 13:26:46,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 269. [2024-11-07 13:26:46,733 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) [2024-11-07 13:26:46,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 376 transitions. [2024-11-07 13:26:46,735 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 376 transitions. Word has length 118 [2024-11-07 13:26:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:26:46,736 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 376 transitions. [2024-11-07 13:26:46,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-07 13:26:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 376 transitions. [2024-11-07 13:26:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-07 13:26:46,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:26:46,738 INFO L215 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] [2024-11-07 13:26:46,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 13:26:46,738 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:26:46,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:26:46,739 INFO L85 PathProgramCache]: Analyzing trace with hash 358712219, now seen corresponding path program 1 times [2024-11-07 13:26:46,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:26:46,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941460710] [2024-11-07 13:26:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:26:46,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:27:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:09,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:27:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:09,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:27:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:09,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:27:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:09,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:27:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:09,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:27:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:09,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:27:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:09,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-07 13:27:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:09,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:27:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:09,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:27:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:09,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-07 13:27:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:10,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:27:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:10,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:27:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:10,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 13:27:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:10,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:27:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:10,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:27:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:10,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 13:27:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:10,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:27:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:10,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:27:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:27:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-07 13:27:10,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:27:10,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941460710] [2024-11-07 13:27:10,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941460710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:27:10,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 13:27:10,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 13:27:10,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534007632] [2024-11-07 13:27:10,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:27:10,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 13:27:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:27:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 13:27:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 13:27:10,073 INFO L87 Difference]: Start difference. First operand 269 states and 376 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-07 13:27:14,150 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 [] [2024-11-07 13:27:16,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:27:16,258 INFO L93 Difference]: Finished difference Result 730 states and 1030 transitions. [2024-11-07 13:27:16,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 13:27:16,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (9), 4 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 [2024-11-07 13:27:16,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:27:16,262 INFO L225 Difference]: With dead ends: 730 [2024-11-07 13:27:16,262 INFO L226 Difference]: Without dead ends: 479 [2024-11-07 13:27:16,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 13:27:16,264 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 217 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 55 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-07 13:27:16,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 620 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 116 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2024-11-07 13:27:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-07 13:27:16,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 475. [2024-11-07 13:27:16,305 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) [2024-11-07 13:27:16,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 670 transitions. [2024-11-07 13:27:16,308 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 670 transitions. Word has length 117 [2024-11-07 13:27:16,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:27:16,309 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 670 transitions. [2024-11-07 13:27:16,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-07 13:27:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 670 transitions. [2024-11-07 13:27:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-07 13:27:16,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:27:16,315 INFO L215 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] [2024-11-07 13:27:16,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 13:27:16,315 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:27:16,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:27:16,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1337425411, now seen corresponding path program 1 times [2024-11-07 13:27:16,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:27:16,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129977452] [2024-11-07 13:27:16,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:27:16,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms