./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-08_1a-drivers--net--ppp--pppox.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-08_1a-drivers--net--ppp--pppox.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', 'f91d2143e2aa98b5d48c7de2c4b17a3507ecfb748f26bae9be6d0588f4557bb1'] 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-08_1a-drivers--net--ppp--pppox.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 f91d2143e2aa98b5d48c7de2c4b17a3507ecfb748f26bae9be6d0588f4557bb1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 13:14:48,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 13:14:48,956 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-07 13:14:48,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 13:14:48,964 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 13:14:48,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 13:14:48,993 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 13:14:48,993 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 13:14:48,994 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 13:14:48,994 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 13:14:48,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 13:14:48,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 13:14:48,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 13:14:48,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 13:14:48,995 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 13:14:48,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 13:14:48,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 13:14:48,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 13:14:48,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 13:14:48,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 13:14:48,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 13:14:48,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 13:14:48,997 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 13:14:48,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 13:14:48,997 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 13:14:48,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 13:14:48,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 13:14:48,997 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 13:14:48,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 13:14:48,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 13:14:48,997 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 13:14:48,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 13:14:48,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 13:14:48,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 13:14:48,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 13:14:48,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 13:14:48,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 13:14:48,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 13:14:48,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 13:14:48,998 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 -> f91d2143e2aa98b5d48c7de2c4b17a3507ecfb748f26bae9be6d0588f4557bb1 [2024-11-07 13:14:49,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 13:14:49,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 13:14:49,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 13:14:49,306 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 13:14:49,306 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 13:14:49,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-07 13:14:50,571 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 13:14:50,978 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 13:14:50,979 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-07 13:14:51,012 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/14c4fbe44/95e9820ed0654f42ba53ffcbd205dbaf/FLAG3d30245e2 [2024-11-07 13:14:51,025 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/14c4fbe44/95e9820ed0654f42ba53ffcbd205dbaf [2024-11-07 13:14:51,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 13:14:51,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 13:14:51,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 13:14:51,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 13:14:51,033 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 13:14:51,034 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:51" (1/1) ... [2024-11-07 13:14:51,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5919f68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:51, skipping insertion in model container [2024-11-07 13:14:51,035 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:51" (1/1) ... [2024-11-07 13:14:51,126 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 13:14:51,713 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-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i[183784,183797] [2024-11-07 13:14:51,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 13:14:51,784 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 13:14:51,960 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6057] [2024-11-07 13:14:51,962 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6060] [2024-11-07 13:14:51,962 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6063] [2024-11-07 13:14:51,962 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6066] [2024-11-07 13:14:51,962 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6069] [2024-11-07 13:14:51,973 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-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i[183784,183797] [2024-11-07 13:14:51,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 13:14:52,031 INFO L204 MainTranslator]: Completed translation [2024-11-07 13:14:52,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52 WrapperNode [2024-11-07 13:14:52,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 13:14:52,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 13:14:52,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 13:14:52,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 13:14:52,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52" (1/1) ... [2024-11-07 13:14:52,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52" (1/1) ... [2024-11-07 13:14:52,113 INFO L138 Inliner]: procedures = 69, calls = 171, calls flagged for inlining = 23, calls inlined = 16, statements flattened = 366 [2024-11-07 13:14:52,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 13:14:52,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 13:14:52,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 13:14:52,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 13:14:52,121 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52" (1/1) ... [2024-11-07 13:14:52,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52" (1/1) ... [2024-11-07 13:14:52,127 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52" (1/1) ... [2024-11-07 13:14:52,149 INFO L175 MemorySlicer]: Split 100 memory accesses to 7 slices as follows [2, 9, 78, 1, 3, 3, 4]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 4, 0, 0, 3, 0, 0]. The 81 writes are split as follows [0, 0, 78, 1, 0, 0, 2]. [2024-11-07 13:14:52,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52" (1/1) ... [2024-11-07 13:14:52,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52" (1/1) ... [2024-11-07 13:14:52,168 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52" (1/1) ... [2024-11-07 13:14:52,172 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52" (1/1) ... [2024-11-07 13:14:52,184 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52" (1/1) ... [2024-11-07 13:14:52,186 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52" (1/1) ... [2024-11-07 13:14:52,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 13:14:52,192 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 13:14:52,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 13:14:52,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 13:14:52,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52" (1/1) ... [2024-11-07 13:14:52,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 13:14:52,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 13:14:52,228 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 13:14:52,234 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 13:14:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 13:14:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-07 13:14:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-07 13:14:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-07 13:14:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-07 13:14:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-07 13:14:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-07 13:14:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-07 13:14:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 13:14:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-07 13:14:52,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-07 13:14:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 13:14:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 13:14:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 13:14:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 13:14:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-07 13:14:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-07 13:14:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-07 13:14:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-07 13:14:52,257 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-07 13:14:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-07 13:14:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-07 13:14:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-07 13:14:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-07 13:14:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-07 13:14:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-07 13:14:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-07 13:14:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-07 13:14:52,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-07 13:14:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 13:14:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-07 13:14:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-07 13:14:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-07 13:14:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-07 13:14:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-07 13:14:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-07 13:14:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-07 13:14:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-07 13:14:52,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-07 13:14:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-07 13:14:52,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-07 13:14:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-07 13:14:52,261 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-07 13:14:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 13:14:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 13:14:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 13:14:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 13:14:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-07 13:14:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-07 13:14:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-07 13:14:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 13:14:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 13:14:52,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 13:14:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-07 13:14:52,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-07 13:14:52,518 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 13:14:52,520 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 13:14:52,544 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-07 13:14:57,564 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-11-07 13:14:57,565 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 13:14:57,577 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 13:14:57,578 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-07 13:14:57,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:14:57 BoogieIcfgContainer [2024-11-07 13:14:57,579 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 13:14:57,581 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 13:14:57,582 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 13:14:57,587 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 13:14:57,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:14:51" (1/3) ... [2024-11-07 13:14:57,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594ef6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:14:57, skipping insertion in model container [2024-11-07 13:14:57,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:52" (2/3) ... [2024-11-07 13:14:57,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594ef6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:14:57, skipping insertion in model container [2024-11-07 13:14:57,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:14:57" (3/3) ... [2024-11-07 13:14:57,590 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-07 13:14:57,606 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 13:14:57,607 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 13:14:57,666 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 13:14:57,680 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;@e38f644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 13:14:57,683 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 13:14:57,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 78 states have internal predecessors, (100), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-07 13:14:57,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-07 13:14:57,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:14:57,701 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2024-11-07 13:14:57,702 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:14:57,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:14:57,707 INFO L85 PathProgramCache]: Analyzing trace with hash 245989502, now seen corresponding path program 1 times [2024-11-07 13:14:57,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:14:57,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323344398] [2024-11-07 13:14:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:14:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:14:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:14:59,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:14:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:14:59,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:14:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:14:59,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:14:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:14:59,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:14:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:14:59,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:14:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:14:59,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:14:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:14:59,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 13:14:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:14:59,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-07 13:14:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:14:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-07 13:14:59,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:14:59,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323344398] [2024-11-07 13:14:59,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323344398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:14:59,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 13:14:59,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 13:14:59,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979288253] [2024-11-07 13:14:59,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:14:59,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 13:14:59,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:14:59,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 13:14:59,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 13:14:59,441 INFO L87 Difference]: Start difference. First operand has 92 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 78 states have internal predecessors, (100), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-07 13:14:59,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:14:59,995 INFO L93 Difference]: Finished difference Result 183 states and 247 transitions. [2024-11-07 13:14:59,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 13:14:59,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2024-11-07 13:14:59,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:15:00,006 INFO L225 Difference]: With dead ends: 183 [2024-11-07 13:15:00,008 INFO L226 Difference]: Without dead ends: 86 [2024-11-07 13:15:00,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 13:15:00,014 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 66 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 13:15:00,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 235 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 13:15:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-07 13:15:00,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2024-11-07 13:15:00,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 67 states have (on average 1.328358208955224) internal successors, (89), 68 states have internal predecessors, (89), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 13:15:00,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2024-11-07 13:15:00,060 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 61 [2024-11-07 13:15:00,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:15:00,061 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2024-11-07 13:15:00,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-07 13:15:00,061 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2024-11-07 13:15:00,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-07 13:15:00,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:15:00,065 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2024-11-07 13:15:00,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 13:15:00,066 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:15:00,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:15:00,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1815893242, now seen corresponding path program 1 times [2024-11-07 13:15:00,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:15:00,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536365006] [2024-11-07 13:15:00,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:00,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:15:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:01,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:15:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:01,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:01,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:01,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:15:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:01,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:01,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:01,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 13:15:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:01,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-07 13:15:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-07 13:15:01,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:15:01,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536365006] [2024-11-07 13:15:01,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536365006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:15:01,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 13:15:01,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 13:15:01,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434398044] [2024-11-07 13:15:01,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:15:01,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 13:15:01,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:15:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 13:15:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 13:15:01,367 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:15:05,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-07 13:15:09,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-07 13:15:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:15:10,795 INFO L93 Difference]: Finished difference Result 182 states and 246 transitions. [2024-11-07 13:15:10,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 13:15:10,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2024-11-07 13:15:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:15:10,800 INFO L225 Difference]: With dead ends: 182 [2024-11-07 13:15:10,800 INFO L226 Difference]: Without dead ends: 130 [2024-11-07 13:15:10,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-07 13:15:10,801 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 112 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-07 13:15:10,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 331 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 117 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2024-11-07 13:15:10,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-07 13:15:10,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 123. [2024-11-07 13:15:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 106 states have (on average 1.3679245283018868) internal successors, (145), 107 states have internal predecessors, (145), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-07 13:15:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 163 transitions. [2024-11-07 13:15:10,822 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 163 transitions. Word has length 61 [2024-11-07 13:15:10,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:15:10,822 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 163 transitions. [2024-11-07 13:15:10,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:15:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 163 transitions. [2024-11-07 13:15:10,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-07 13:15:10,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:15:10,824 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2024-11-07 13:15:10,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 13:15:10,825 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:15:10,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:15:10,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1948637714, now seen corresponding path program 1 times [2024-11-07 13:15:10,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:15:10,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498788995] [2024-11-07 13:15:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:10,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:15:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:11,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:15:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:11,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:11,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:11,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:15:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:11,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:11,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:11,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 13:15:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:11,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-07 13:15:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-07 13:15:11,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:15:11,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498788995] [2024-11-07 13:15:11,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498788995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:15:11,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 13:15:11,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 13:15:11,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659703609] [2024-11-07 13:15:11,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:15:11,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 13:15:11,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:15:11,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 13:15:11,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 13:15:11,875 INFO L87 Difference]: Start difference. First operand 123 states and 163 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:15:12,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:15:12,675 INFO L93 Difference]: Finished difference Result 137 states and 177 transitions. [2024-11-07 13:15:12,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 13:15:12,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 64 [2024-11-07 13:15:12,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:15:12,678 INFO L225 Difference]: With dead ends: 137 [2024-11-07 13:15:12,678 INFO L226 Difference]: Without dead ends: 132 [2024-11-07 13:15:12,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-07 13:15:12,679 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 156 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 13:15:12,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 218 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 13:15:12,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-07 13:15:12,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 123. [2024-11-07 13:15:12,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 106 states have (on average 1.3584905660377358) internal successors, (144), 107 states have internal predecessors, (144), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-07 13:15:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 162 transitions. [2024-11-07 13:15:12,698 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 162 transitions. Word has length 64 [2024-11-07 13:15:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:15:12,698 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 162 transitions. [2024-11-07 13:15:12,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:15:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 162 transitions. [2024-11-07 13:15:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-07 13:15:12,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:15:12,700 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2024-11-07 13:15:12,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 13:15:12,700 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:15:12,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:15:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2005896016, now seen corresponding path program 1 times [2024-11-07 13:15:12,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:15:12,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541574593] [2024-11-07 13:15:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:12,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:15:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:13,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:15:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:13,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:13,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:13,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:15:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:13,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:13,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:13,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 13:15:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:13,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-07 13:15:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-07 13:15:13,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:15:13,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541574593] [2024-11-07 13:15:13,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541574593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:15:13,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 13:15:13,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 13:15:13,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970750009] [2024-11-07 13:15:13,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:15:13,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 13:15:13,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:15:13,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 13:15:13,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 13:15:13,626 INFO L87 Difference]: Start difference. First operand 123 states and 162 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-07 13:15:14,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:15:14,317 INFO L93 Difference]: Finished difference Result 310 states and 425 transitions. [2024-11-07 13:15:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 13:15:14,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2024-11-07 13:15:14,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:15:14,319 INFO L225 Difference]: With dead ends: 310 [2024-11-07 13:15:14,319 INFO L226 Difference]: Without dead ends: 213 [2024-11-07 13:15:14,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-07 13:15:14,321 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 155 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 13:15:14,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 268 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 13:15:14,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-07 13:15:14,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 205. [2024-11-07 13:15:14,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 184 states have (on average 1.3858695652173914) internal successors, (255), 185 states have internal predecessors, (255), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-07 13:15:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 277 transitions. [2024-11-07 13:15:14,350 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 277 transitions. Word has length 64 [2024-11-07 13:15:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:15:14,351 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 277 transitions. [2024-11-07 13:15:14,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-07 13:15:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 277 transitions. [2024-11-07 13:15:14,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-07 13:15:14,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:15:14,354 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2024-11-07 13:15:14,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 13:15:14,354 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:15:14,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:15:14,355 INFO L85 PathProgramCache]: Analyzing trace with hash -933583417, now seen corresponding path program 1 times [2024-11-07 13:15:14,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:15:14,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844700807] [2024-11-07 13:15:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:14,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:15:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:15,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:15:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:15,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:15,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:15,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:15:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:15,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:15,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:15,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 13:15:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:15,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-07 13:15:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-07 13:15:15,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:15:15,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844700807] [2024-11-07 13:15:15,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844700807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:15:15,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 13:15:15,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 13:15:15,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336006797] [2024-11-07 13:15:15,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:15:15,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 13:15:15,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:15:15,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 13:15:15,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 13:15:15,211 INFO L87 Difference]: Start difference. First operand 205 states and 277 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:15:19,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-07 13:15:19,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:15:19,921 INFO L93 Difference]: Finished difference Result 451 states and 621 transitions. [2024-11-07 13:15:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 13:15:19,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 70 [2024-11-07 13:15:19,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:15:19,923 INFO L225 Difference]: With dead ends: 451 [2024-11-07 13:15:19,923 INFO L226 Difference]: Without dead ends: 276 [2024-11-07 13:15:19,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-07 13:15:19,924 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 98 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-07 13:15:19,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 365 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 83 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-07 13:15:19,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-07 13:15:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 265. [2024-11-07 13:15:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 244 states have (on average 1.389344262295082) internal successors, (339), 245 states have internal predecessors, (339), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-07 13:15:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 361 transitions. [2024-11-07 13:15:19,949 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 361 transitions. Word has length 70 [2024-11-07 13:15:19,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:15:19,949 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 361 transitions. [2024-11-07 13:15:19,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:15:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 361 transitions. [2024-11-07 13:15:19,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-07 13:15:19,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:15:19,954 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2024-11-07 13:15:19,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 13:15:19,955 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:15:19,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:15:19,955 INFO L85 PathProgramCache]: Analyzing trace with hash 213591439, now seen corresponding path program 1 times [2024-11-07 13:15:19,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:15:19,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614281818] [2024-11-07 13:15:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:15:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:20,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:15:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:20,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:20,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:20,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:15:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:20,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:21,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:21,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 13:15:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:21,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-07 13:15:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-07 13:15:21,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:15:21,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614281818] [2024-11-07 13:15:21,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614281818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 13:15:21,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228146155] [2024-11-07 13:15:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:21,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 13:15:21,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 13:15:21,366 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 13:15:21,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 13:15:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:22,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 1361 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 13:15:22,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 13:15:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-07 13:15:22,594 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 13:15:22,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228146155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:15:22,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 13:15:22,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-07 13:15:22,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732631403] [2024-11-07 13:15:22,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:15:22,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 13:15:22,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:15:22,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 13:15:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-07 13:15:22,596 INFO L87 Difference]: Start difference. First operand 265 states and 361 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-07 13:15:22,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:15:22,687 INFO L93 Difference]: Finished difference Result 512 states and 704 transitions. [2024-11-07 13:15:22,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 13:15:22,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 81 [2024-11-07 13:15:22,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:15:22,689 INFO L225 Difference]: With dead ends: 512 [2024-11-07 13:15:22,689 INFO L226 Difference]: Without dead ends: 266 [2024-11-07 13:15:22,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-07 13:15:22,691 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 13:15:22,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 303 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 13:15:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-07 13:15:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-07 13:15:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 245 states have (on average 1.3877551020408163) internal successors, (340), 246 states have internal predecessors, (340), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-07 13:15:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 362 transitions. [2024-11-07 13:15:22,707 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 362 transitions. Word has length 81 [2024-11-07 13:15:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:15:22,707 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 362 transitions. [2024-11-07 13:15:22,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-07 13:15:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 362 transitions. [2024-11-07 13:15:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-07 13:15:22,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:15:22,710 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2024-11-07 13:15:22,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 13:15:22,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 13:15:22,911 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:15:22,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:15:22,912 INFO L85 PathProgramCache]: Analyzing trace with hash 380634059, now seen corresponding path program 1 times [2024-11-07 13:15:22,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:15:22,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330733330] [2024-11-07 13:15:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:22,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:15:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:23,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:15:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:23,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:23,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:23,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:15:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:23,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:23,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:24,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 13:15:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:24,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-07 13:15:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-07 13:15:24,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:15:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330733330] [2024-11-07 13:15:24,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330733330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 13:15:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965035204] [2024-11-07 13:15:24,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:24,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 13:15:24,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 13:15:24,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 13:15:24,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 13:15:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:29,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 13:15:29,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 13:15:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-07 13:15:29,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 13:15:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-07 13:15:30,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965035204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 13:15:30,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 13:15:30,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2024-11-07 13:15:30,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523750569] [2024-11-07 13:15:30,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 13:15:30,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 13:15:30,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:15:30,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 13:15:30,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-07 13:15:30,096 INFO L87 Difference]: Start difference. First operand 266 states and 362 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 10 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-07 13:15:34,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-07 13:15:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:15:36,379 INFO L93 Difference]: Finished difference Result 519 states and 714 transitions. [2024-11-07 13:15:36,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 13:15:36,380 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 10 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2024-11-07 13:15:36,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:15:36,382 INFO L225 Difference]: With dead ends: 519 [2024-11-07 13:15:36,382 INFO L226 Difference]: Without dead ends: 269 [2024-11-07 13:15:36,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2024-11-07 13:15:36,385 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 47 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-07 13:15:36,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 560 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 208 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2024-11-07 13:15:36,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-07 13:15:36,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-11-07 13:15:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 248 states have (on average 1.3830645161290323) internal successors, (343), 249 states have internal predecessors, (343), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-07 13:15:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 365 transitions. [2024-11-07 13:15:36,400 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 365 transitions. Word has length 83 [2024-11-07 13:15:36,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:15:36,401 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 365 transitions. [2024-11-07 13:15:36,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 10 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-07 13:15:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 365 transitions. [2024-11-07 13:15:36,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-07 13:15:36,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:15:36,403 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 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] [2024-11-07 13:15:36,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 13:15:36,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 13:15:36,604 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:15:36,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:15:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1160672399, now seen corresponding path program 2 times [2024-11-07 13:15:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:15:36,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265625798] [2024-11-07 13:15:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:36,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:15:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:38,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:15:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:38,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:38,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:38,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:15:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:38,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:38,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:38,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 13:15:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:38,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-07 13:15:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-07 13:15:38,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:15:38,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265625798] [2024-11-07 13:15:38,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265625798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:15:38,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 13:15:38,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-07 13:15:38,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799521428] [2024-11-07 13:15:38,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:15:38,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 13:15:38,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:15:38,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 13:15:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-07 13:15:38,603 INFO L87 Difference]: Start difference. First operand 269 states and 365 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:15:42,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-07 13:15:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:15:43,892 INFO L93 Difference]: Finished difference Result 510 states and 701 transitions. [2024-11-07 13:15:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 13:15:43,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 89 [2024-11-07 13:15:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:15:43,895 INFO L225 Difference]: With dead ends: 510 [2024-11-07 13:15:43,895 INFO L226 Difference]: Without dead ends: 275 [2024-11-07 13:15:43,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-07 13:15:43,897 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 37 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-07 13:15:43,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 466 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 186 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2024-11-07 13:15:43,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-07 13:15:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2024-11-07 13:15:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 254 states have (on average 1.3661417322834646) internal successors, (347), 255 states have internal predecessors, (347), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-07 13:15:43,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 369 transitions. [2024-11-07 13:15:43,913 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 369 transitions. Word has length 89 [2024-11-07 13:15:43,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:15:43,914 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 369 transitions. [2024-11-07 13:15:43,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:15:43,914 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 369 transitions. [2024-11-07 13:15:43,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-07 13:15:43,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:15:43,915 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 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] [2024-11-07 13:15:43,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 13:15:43,916 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:15:43,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:15:43,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1840730769, now seen corresponding path program 1 times [2024-11-07 13:15:43,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:15:43,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432356945] [2024-11-07 13:15:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:43,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:15:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:44,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:15:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:44,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:44,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:44,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:15:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:44,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:44,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:44,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 13:15:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:44,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-07 13:15:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-07 13:15:44,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:15:44,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432356945] [2024-11-07 13:15:44,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432356945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 13:15:44,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389717332] [2024-11-07 13:15:44,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:44,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 13:15:44,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 13:15:44,938 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 13:15:44,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 13:15:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:46,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-07 13:15:46,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 13:15:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-07 13:15:46,106 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 13:15:46,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389717332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:15:46,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 13:15:46,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-07 13:15:46,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572442139] [2024-11-07 13:15:46,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:15:46,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 13:15:46,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:15:46,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 13:15:46,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-07 13:15:46,108 INFO L87 Difference]: Start difference. First operand 275 states and 369 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:15:46,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:15:46,159 INFO L93 Difference]: Finished difference Result 503 states and 688 transitions. [2024-11-07 13:15:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 13:15:46,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 89 [2024-11-07 13:15:46,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:15:46,164 INFO L225 Difference]: With dead ends: 503 [2024-11-07 13:15:46,164 INFO L226 Difference]: Without dead ends: 262 [2024-11-07 13:15:46,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-07 13:15:46,166 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 13:15:46,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 13:15:46,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-07 13:15:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2024-11-07 13:15:46,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 245 states have (on average 1.363265306122449) internal successors, (334), 246 states have internal predecessors, (334), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-07 13:15:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 352 transitions. [2024-11-07 13:15:46,186 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 352 transitions. Word has length 89 [2024-11-07 13:15:46,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:15:46,186 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 352 transitions. [2024-11-07 13:15:46,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:15:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 352 transitions. [2024-11-07 13:15:46,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-07 13:15:46,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:15:46,187 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 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] [2024-11-07 13:15:46,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 13:15:46,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 13:15:46,388 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:15:46,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:15:46,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1835436395, now seen corresponding path program 1 times [2024-11-07 13:15:46,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:15:46,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955992766] [2024-11-07 13:15:46,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:46,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:15:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:47,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:15:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:47,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:47,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:47,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:15:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:47,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:47,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:47,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 13:15:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:47,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-07 13:15:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-07 13:15:47,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:15:47,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955992766] [2024-11-07 13:15:47,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955992766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:15:47,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 13:15:47,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 13:15:47,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821108738] [2024-11-07 13:15:47,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:15:47,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 13:15:47,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:15:47,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 13:15:47,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 13:15:47,515 INFO L87 Difference]: Start difference. First operand 262 states and 352 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-07 13:15:51,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-07 13:15:52,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:15:52,865 INFO L93 Difference]: Finished difference Result 393 states and 533 transitions. [2024-11-07 13:15:52,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 13:15:52,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 91 [2024-11-07 13:15:52,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:15:52,869 INFO L225 Difference]: With dead ends: 393 [2024-11-07 13:15:52,870 INFO L226 Difference]: Without dead ends: 390 [2024-11-07 13:15:52,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-07 13:15:52,871 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 177 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-07 13:15:52,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 475 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 112 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2024-11-07 13:15:52,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-07 13:15:52,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 383. [2024-11-07 13:15:52,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 362 states have (on average 1.3784530386740332) internal successors, (499), 363 states have internal predecessors, (499), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-07 13:15:52,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 523 transitions. [2024-11-07 13:15:52,888 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 523 transitions. Word has length 91 [2024-11-07 13:15:52,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:15:52,889 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 523 transitions. [2024-11-07 13:15:52,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-07 13:15:52,889 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 523 transitions. [2024-11-07 13:15:52,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-07 13:15:52,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:15:52,890 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-07 13:15:52,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 13:15:52,890 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:15:52,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:15:52,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1410908753, now seen corresponding path program 1 times [2024-11-07 13:15:52,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:15:52,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299171352] [2024-11-07 13:15:52,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:52,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:15:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:53,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:15:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:53,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:53,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:53,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:15:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:53,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:15:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:53,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:15:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:53,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 13:15:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:53,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-07 13:15:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:15:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-07 13:15:53,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:15:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299171352] [2024-11-07 13:15:53,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299171352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:15:53,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 13:15:53,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 13:15:53,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733557921] [2024-11-07 13:15:53,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:15:53,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 13:15:53,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:15:53,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 13:15:53,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 13:15:53,705 INFO L87 Difference]: Start difference. First operand 383 states and 523 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:15:57,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-07 13:15:58,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:15:58,605 INFO L93 Difference]: Finished difference Result 635 states and 874 transitions. [2024-11-07 13:15:58,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 13:15:58,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 98 [2024-11-07 13:15:58,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:15:58,609 INFO L225 Difference]: With dead ends: 635 [2024-11-07 13:15:58,610 INFO L226 Difference]: Without dead ends: 383 [2024-11-07 13:15:58,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-07 13:15:58,612 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 37 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-07 13:15:58,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 339 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 104 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-11-07 13:15:58,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-07 13:15:58,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-11-07 13:15:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 362 states have (on average 1.367403314917127) internal successors, (495), 363 states have internal predecessors, (495), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-07 13:15:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 519 transitions. [2024-11-07 13:15:58,656 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 519 transitions. Word has length 98 [2024-11-07 13:15:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:15:58,657 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 519 transitions. [2024-11-07 13:15:58,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:15:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 519 transitions. [2024-11-07 13:15:58,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-07 13:15:58,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:15:58,658 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-07 13:15:58,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 13:15:58,659 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:15:58,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:15:58,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1862990189, now seen corresponding path program 1 times [2024-11-07 13:15:58,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:15:58,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347049315] [2024-11-07 13:15:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:15:58,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:15:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:00,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:16:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:00,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:16:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:00,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:16:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:00,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:16:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:00,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:16:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:00,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:16:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:00,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 13:16:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:00,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-07 13:16:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-07 13:16:00,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 13:16:00,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347049315] [2024-11-07 13:16:00,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347049315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 13:16:00,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961768434] [2024-11-07 13:16:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:16:00,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 13:16:00,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 13:16:00,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 13:16:00,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 13:16:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:01,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 13:16:01,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 13:16:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-07 13:16:01,742 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 13:16:01,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961768434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 13:16:01,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 13:16:01,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-07 13:16:01,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840395173] [2024-11-07 13:16:01,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 13:16:01,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 13:16:01,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 13:16:01,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 13:16:01,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-07 13:16:01,744 INFO L87 Difference]: Start difference. First operand 383 states and 519 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:16:01,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 13:16:01,904 INFO L93 Difference]: Finished difference Result 635 states and 866 transitions. [2024-11-07 13:16:01,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 13:16:01,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 98 [2024-11-07 13:16:01,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 13:16:01,907 INFO L225 Difference]: With dead ends: 635 [2024-11-07 13:16:01,907 INFO L226 Difference]: Without dead ends: 383 [2024-11-07 13:16:01,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-07 13:16:01,909 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 13:16:01,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 404 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 13:16:01,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-07 13:16:01,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-11-07 13:16:01,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 362 states have (on average 1.356353591160221) internal successors, (491), 363 states have internal predecessors, (491), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-07 13:16:01,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 515 transitions. [2024-11-07 13:16:01,929 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 515 transitions. Word has length 98 [2024-11-07 13:16:01,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 13:16:01,929 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 515 transitions. [2024-11-07 13:16:01,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-07 13:16:01,930 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 515 transitions. [2024-11-07 13:16:01,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-07 13:16:01,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 13:16:01,931 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 13:16:01,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 13:16:02,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-07 13:16:02,133 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 13:16:02,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 13:16:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1477146873, now seen corresponding path program 1 times [2024-11-07 13:16:02,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 13:16:02,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475028152] [2024-11-07 13:16:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 13:16:02,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 13:16:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:07,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 13:16:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:07,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:16:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:07,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:16:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:07,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 13:16:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:07,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 13:16:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:07,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-07 13:16:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:07,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 13:16:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 13:16:07,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-07 13:16:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat